The Scripting Guy in the Lion City with a performance sense.
This video will definitely change your way in looking at web application performance.
Labels: performance, youtube
posted by chihungchan at 4:00 PM
0 comments
$ cat a1.f95 INTERVAL :: ANG = [29.9, 30.1] INTERVAL :: EF = [6.9, 7.1] INTERVAL :: FG = [9.9, 10.1] INTERVAL :: GW INTERVAL :: EW INTERVAL :: E INTERVAL :: F REAL :: PI = 3.14159265 GW=FG*sin(ANG*PI/180) EW=FG*cos(ANG*PI/180)-EF ALPHA=atan(GW/EW) ANSWER=(PI-ALPHA)*180/PI PRINT *, ANSWER END $ f95 -xia -xarch=amd64 a1.f95 $ ./a.out [106.1311886713034,110.60714019410637]
So the answer should be between 106 to 111, if we round it off to the nearest integer
Think about it. If everybody is doing the same thing, it has to be right. Is it ?
Labels: Maths
posted by chihungchan at 4:25 PM
0 comments
The question is:
Draw a triangle EFG in which EF=7cm, angle EFG=30 degree and FG=10cm. Measure angle FEG.
The student supposed to use ruler and protractor to accomplish the task. Below showed the examine question with my son's working on the left and the 'model answer' in green copied from the whiteboard. Obviously the red color cross is marked by the teacher. My son was telling me that any answer between 109 and 110 is considered to be correct, ie. with 1 degree tolerance. Fair enough.
So I took the ruler and protractor to work it out on my own to see whether I can get the answer within the same tolerance level. I got the same answer as my son. Wait a minute, this can't be right 'cos I took extreme precaution to ensure I measure extactly 7cm, 10cm and 30 degree.
Okay, why not use trigonometry to work out the exact answer. See below for proof.
Hey, the correct answer should be 108.37. If we were to round to the nearest degree, it should be 108. If we were to based on the tolerance level given by the teacher, the answer should be between 107 and 109. Definitely 110 is not the correct answer.
I even used Geogebra to verify it.
Labels: Maths
posted by chihungchan at 11:09 AM
2 comments
Of course I wanted to help my colleague, on the other hand I do not want to stay back either. Also, I do not want to leave my notebook unattended
in the office. If I would capture the HTTP headers at the final click, I should be able replay that as a script. With this approach, the script does not have to worry about session. I launched
LiveHTTPheaders to assist me to capture the HTTP headers. Below is the screen capture:
To prove that my concept works, I captured all these HTTP headers and put them in a script to program Wget to download it for me in a Solaris server. Instead of running the script with nohup and puting it as a background job, I ran that as a batch process using "at now". If you were to run with 'nohup command ... &', you wouldn't be able to logout cleanly from your connection. Here is how I scripted the whole thing
#! /bin/sh h1='Host: sdlc-esd.sun.com' h2='User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071025 Firefox/2.0.0.9' h3='Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5' h4='Accept-Language: en-us,en;q=0.5' h5='Accept-Encoding: gzip,deflate' h6='Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7' h7='Cookie: s_cc=true; s_sq=; SessionCredentials=6664883992855580291' url='http://sdlc-esd.sun.com/ESD24/Java_Systems/AS7U9/sun-appserver7-solaris-sparc-ur9.tar.gz?AuthParam=1195746732_f8c9c901546df8b1985446441554100c&TUrl=an1npDpbKod7kSYrROhENTonIuc5W0D1Lc4nXz+pGFFranixdCdgxDTPbW4=&TicketId=dVN4Og5LN+k6+w==&GroupName=SDLC&BHost=sdlc3h.sun.com&FilePath=/ESD24/Java_Systems/AS7U9/sun-appserver7-solaris-sparc-ur9.tar.gz&File=sun-appserver7-solaris-sparc-ur9.tar.gz' wget \ --header="$h1" \ --header="$h2" \ --header="$h3" \ --header="$h4" \ --header="$h5" \ --header="$h6" \ --header="$h7" \ -O sun-appserver7-solaris-sparc-ur9.tar.gz \ "$url"
Shell script saved the day.
Labels: shell script, wget
posted by chihungchan at 12:11 AM
1 comments
"Can you tell me how you can remove files that have not been modified for more than 30 days?"
Sad to say that the interviewee was not able to provide the exact command. Sometime it is just not possible to remember those cryptic syntax of UNIX commands. What if the interviewee is able to answer the question, does it mean that he/she know 'find' command well enough ? Also, is the interviewee capable of doing other system administrative jobs? If I were the interviewer, I would follow up with more questions:
Let's create tonnes of files (365 of them) for our experiment using this Tcl script
set now [clock seconds]
for { set i 1 } { $i <= 365 } { incr i } {
set time [clock format [expr {$now-86400*$i}] -format {%Y%m%d%H%M}]
exec touch -t $time day-$i
}
find . -type f -mtime +30 -exec rm -i {} \;
In this case, I include -i in 'rm' to let the system to prompt me before I delete the files. If you are dealing with a lot of files, you may want to use 'rm -f'. Make sure you are deleting the files that you are suppose to delete.
find . -type f \( -mtime +30 -a -mtime -60 \) -ls
find . -type f -mtime +200 | ./wk
'wk' is a simple Tcl script to determine whether the file is last modified on weekend
while { [gets stdin line] >= 0 } {
file stat $line fstat
set wk [clock format $fstat(mtime) -format %a]
if { [string equal $wk Sun] || [string equal $wk Sat] } {
puts $line
}
}
What you need is a program to calculate the number of days old and use the output as the input to find. A sample Tcl program (dayold) like this will do the job
set t [clock scan [lindex $argv 0]] set now [clock seconds] set days [expr ($now-$t)/86400] puts $daysBelow shows you how it can be combined with find
$ ./etime 2007-07-04 136 $ find . -mtime `./etime 2007-07-04` ./day-136 $ ls -l ./day-136 -rw------- 1 chihung gdz 0 Jul 4 17:11 ./day-136
If I were the interviewer, I would expect the interviewee (if he/she is apply for a system admin job) to be able to program in scripting language. It really does not matter what language as long as he/she can master that language well.
posted by chihungchan at 6:02 PM
0 comments
Below are the links to the various updates of Solaris 10
Labels: Solaris
posted by chihungchan at 2:45 PM
0 comments
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
unsigned int t;
t=(unsigned int)atoi(argv[1]);
sleep(t);
exit(0);
}
In Solaris, you can differentiate it from either the dynamic dependencies of the executable or the address space of a running process
$ uname -a
SunOS myserver 5.10 Generic_118833-36 sun4u sparc SUNW,UltraSPARC-IIi-cEngine
$ isainfo -v
64-bit sparcv9 applications
vis
32-bit sparc applications
vis v8plus div32 mul32
$ which gcc
/usr/sfw/bin/gcc
$ gcc --version
gcc (GCC) 3.4.3 (csl-sol210-3_4-branch+sol_rpath)
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gcc -o a64 -m64 a.c
$ gcc -o a32 -m32 a.c
$ ldd a32
libc.so.1 => /lib/libc.so.1
libm.so.2 => /lib/libm.so.2
$ ldd a64
libc.so.1 => /lib/64/libc.so.1
libm.so.2 => /lib/64/libm.so.2
$ ./a32 100 &
[1] 3392
$ pmap 3392
3392: ./a32 100
00010000 8K r-x-- /export/home/chihung/tmp/a32
00020000 8K rwx-- /export/home/chihung/tmp/a32
FF280000 864K r-x-- /lib/libc.so.1
FF368000 32K rwx-- /lib/libc.so.1
FF370000 8K rwx-- /lib/libc.so.1
FF3A0000 24K rwx-- [ anon ]
FF3B0000 184K r-x-- /lib/ld.so.1
FF3EE000 8K rwx-- /lib/ld.so.1
FF3F0000 8K rwx-- /lib/ld.so.1
FFBFE000 8K rwx-- [ stack ]
total 1152K
$ ./a64 100 &
[2] 3394
$ pmap 3394
3394: ./a64 100
0000000100000000 8K r-x-- /export/home/chihung/tmp/a64
0000000100100000 8K rwx-- /export/home/chihung/tmp/a64
FFFFFFFF7F000000 8K rwx-- [ anon ]
FFFFFFFF7F100000 24K rwx-- [ anon ]
FFFFFFFF7F200000 920K r-x-- /lib/sparcv9/libc.so.1
FFFFFFFF7F3E6000 64K rwx-- /lib/sparcv9/libc.so.1
FFFFFFFF7F3F6000 8K rwx-- /lib/sparcv9/libc.so.1
FFFFFFFF7F500000 8K rwx-- [ anon ]
FFFFFFFF7F600000 176K r-x-- /lib/sparcv9/ld.so.1
FFFFFFFF7F72C000 16K rwx-- /lib/sparcv9/ld.so.1
FFFFFFFF7FFFE000 8K rw--- [ stack ]
total 1248K
In Linux, you can do the same as what we did for Solaris.
CentOS-5 32-bit
$ uname -a
Linux myserver 2.6.18-8.1.8.el5 #1 SMP Tue Jul 10 06:50:22 EDT 2007 i686 i686 i386 GNU/Linux
$ gcc --version
gcc (GCC) 4.1.1 20070105 (Red Hat 4.1.1-52)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gcc -m32 -o a32 a.c
$ ./a32 100 &
[1] 4305
$ ldd a32
linux-gate.so.1 => (0x008ef000)
libc.so.6 => /lib/libc.so.6 (0x0070a000)
/lib/ld-linux.so.2 (0x006e8000)
$ cat /proc/4305/maps
00477000-00478000 r-xp 00477000 00:00 0 [vdso]
006e8000-00701000 r-xp 00000000 fd:00 7307266 /lib/ld-2.5.so
00701000-00702000 r-xp 00018000 fd:00 7307266 /lib/ld-2.5.so
00702000-00703000 rwxp 00019000 fd:00 7307266 /lib/ld-2.5.so
0070a000-00841000 r-xp 00000000 fd:00 7310310 /lib/libc-2.5.so
00841000-00843000 r-xp 00137000 fd:00 7310310 /lib/libc-2.5.so
00843000-00844000 rwxp 00139000 fd:00 7310310 /lib/libc-2.5.so
00844000-00847000 rwxp 00844000 00:00 0
08048000-08049000 r-xp 00000000 fd:00 1444299 /home/chihung/a32
08049000-0804a000 rw-p 00000000 fd:00 1444299 /home/chihung/a32
b7fa6000-b7fa7000 rw-p b7fa6000 00:00 0
b7fbf000-b7fc0000 rw-p b7fbf000 00:00 0
bfb33000-bfb48000 rw-p bfb33000 00:00 0 [stack]
$ gcc --version
gcc (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-52)
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ uname -a
Linux myserver 2.4.21-32.ELsmp #1 SMP Fri Apr 15 21:03:28 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux
$ gcc -m64 -o a64 a.c
$ ./a64 100 &
[1] 21632
$ ldd a64
libc.so.6 => /lib64/tls/libc.so.6 (0x0000002a9567c000)
/lib64/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x0000002a95556000)
$ cat /proc/21632/maps
0000000000400000-0000000000401000 r-xp 0000000000000000 08:02 1255888 /home/chihung/a64
0000000000500000-0000000000501000 rw-p 0000000000000000 08:02 1255888 /home/chihung/a64
0000002a95556000-0000002a9566b000 r-xp 0000000000000000 08:02 537723 /lib64/ld-2.3.2.so
0000002a9566b000-0000002a9566c000 rw-p 0000000000015000 08:02 537723 /lib64/ld-2.3.2.so
0000002a9566c000-0000002a9566d000 rw-p 0000000000000000 00:00 0
0000002a9567c000-0000002a957b7000 r-xp 0000000000000000 08:02 944733 /lib64/tls/libc-2.3.2.so
0000002a957b7000-0000002a958b7000 ---p 000000000013b000 08:02 944733 /lib64/tls/libc-2.3.2.so
0000002a958b7000-0000002a958bc000 rw-p 000000000013b000 08:02 944733 /lib64/tls/libc-2.3.2.so
0000002a958bc000-0000002a958c1000 rw-p 0000000000000000 00:00 0
0000007fbfff9000-0000007fc0000000 rw-p ffffffffffffb000 00:00 0
posted by chihungchan at 5:14 PM
0 comments
I copied ISO images of CentOS5, openSUSE 10.3, and Solaris 10 U4 to the SunFire X4600. I tried to install a guest xvm on top of the openSolaris using DVD and ISO, but no luck in any of these. Same for NFS installation, the "virt-install" command just complained that it cannot find the NFS server. However, I was able to mount it manually.
Today, I tried the HTTP method and CentOS 5 worked but the others just failed. The CentOS 5 ISO was mounted using the LOFI ("lofiadm -a") followed by "mount -F hsfs". The mount point will be the "DocumentRoot" for the Apache web server. Below shows some of the details:
Make sure you boot up openSolaris xVM (this is not the default)
root@opensolaris# uname -a
SunOS opensolaris 5.11 snv_75 i86pc i386 i86xpv
root@opensolaris# svcs -a | grep xvm
online Oct_30 svc:/system/xvm/store:default
online Oct_30 svc:/system/xvm/xend:default
online Oct_30 svc:/system/xvm/console:default
online Oct_30 svc:/system/xvm/domains:default
root@opensolaris# ps -ef | grep xen
root 336 1 0 Oct 30 ? 0:01 /usr/lib/xenstored --pid-file=/var/run/xenstore.pid
root 418 1 0 Oct 30 ? 0:01 /usr/lib/xenconsoled start
root 366 1 0 Oct 30 ? 0:30 python /usr/lib/xend start
For installation, you need "virt-install" (install guest operating system on xVM system) and "virsh" (management user interface for guest domains). You can either supply all the necessary arguments to virt-install. If insufficient details in creating the domain, it will prompt you for the details. By default, 1 CPU will be allocated to the guest domain. In this exercise, I forced it to use 4 'cos I have 16 CPUs in the server. You can always shutdown the domain and change the number of vcpu. In this domain, I allocated 4 CPUs, 4 GB memory and 10GB of disk space. The whole domain of 10GB will be housed in 1 file and you will see that this file has been used as lofi (loop back file system).
root@opensolaris# virt-install -vcpus=4
What is the name of your virtual machine? centos5
How much RAM should be allocated (in megabytes)? 4096
What would you like to use as the disk (path)? /data/xvm/centos5.xvm
How large would you like the disk (/data/xvm/centos5.xvm) to be (in gigabytes)? 10
Would you like to enable graphics support? (yes or no) no
What is the install location? http://10.0.12.251/centos5/
....
....
[answer all the questions to setup the CentOS5]
root@opensolaris# xm list
Name ID Mem VCPUs State Time(s)
Domain-0 0 27759 16 r----- 7321.9
centos5 7 4096 4 -b---- 7.3
root@opensolaris# xm list -l centos5
(domain
(domid 7)
(on_crash restart)
(memory 4096)
(uuid 3816e1f7-5e95-1841-0adc-5fc4a5360aa5)
(bootloader_args )
(name centos5)
(maxmem 4096)
(on_reboot restart)
(on_poweroff destroy)
(localtime 0)
(vcpus 4)
(bootloader /usr/lib/xen/bin/pygrub)
(shadow_memory 0)
(cpu_weight 256)
(cpu_cap 0)
(features )
(on_xend_start ignore)
(on_xend_stop shutdown)
(start_time 1193889884.81)
(cpu_time 7.283464146)
(online_vcpus 4)
(image (linux (kernel )))
(status 2)
(memory_dynamic_min 4096)
(memory_dynamic_max 4096)
(state -b----)
(store_mfn 7498403)
(console_mfn 7498402)
(device
(vif
(bridge )
(mac 00:16:3e:14:84:e5)
(uuid b7628569-99c7-6b55-d120-13c4e0b5630d)
)
)
(device
(vbd
(uname file:/data/xvm/centos5.xvm)
(driver paravirtualised)
(mode w)
(dev xvda)
(uuid 6666b6c5-6667-a8cf-17fd-52a7374881c7)
)
)
)
root@opensolaris# ls -l /data/xvm/centos5.xvm
-rwxr-xr-x 1 root root 10737418240 Nov 1 13:26 /data/xvm/centos5.xvm
root@opensolaris# lofiadm
Block Device File
/dev/lofi/1 /data/xvm/centos5.xvm
Now the guest domain is ready, let us login via the "xm" command and explore whether the new guest domain has been configured properly. Ctrl-] is the keyboard sequence to break out from the xvm.
root@opensolaris# xm console centos5
Bootdata ok (command line is ro root=/dev/VolGroup00/LogVol00 console=xvc0)
Linux version 2.6.18-8.el5xen (mockbuild@builder6.centos.org) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)) #1 SMP Thu Mar 15 19:56:43 EDT 2007
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000100800000 (usable)
No mptable found.
Built 1 zonelists. Total pages: 1050624
Kernel command line: ro root=/dev/VolGroup00/LogVol00 console=xvc0
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Xen reported: 2613.400 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
Software IO TLB disabled
Memory: 4096768k/4202496k available (2321k kernel code, 96972k reserved, 1312k data, 168k init)
Calibrating delay using timer specific routine.. 6538.09 BogoMIPS (lpj=13076195)
Security Framework v1.0.0 initialized
SELinux: Initializing.
SELinux: Starting in permissive mode
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU: Physical Processor ID: 7
CPU: Processor Core ID: 1
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 377A0 could not acquire Mutex [2] [20060707]
Initializing CPU#1
migration_cost=1074
migration_cost=1074Initializing CPU#2
migration_cost=1074
Brought up 4 CPUs
Initializing CPU#3
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel: domain hash size = 128
NetLabel: protocols = UNLABELED CIPSOv4
NetLabel: unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 262144 (order: 9, 2097152 bytes)
TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 262144 bind 65536)
TCP reno registered
IA-32 Microcode Update Driver: v1.14-xen <tigran@veritas.com>
audit: initializing netlink socket (disabled)
audit(1193918686.777:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
SELinux: Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key 991108A46E99ED4B
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Xen virtual console successfully installed as xvc0
Bootdata ok (command line is ro root=/dev/VolGroup00/LogVol00 console=xvc0)
Linux version 2.6.18-8.el5xen (mockbuild@builder6.centos.org) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)) #1 SMP Thu Mar 15 19:56:43 EDT 2007
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000100800000 (usable)
No mptable found.
Built 1 zonelists. Total pages: 1050624
Kernel command line: ro root=/dev/VolGroup00/LogVol00 console=xvc0
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Xen reported: 2613.400 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
Software IO TLB disabled
Memory: 4096768k/4202496k available (2321k kernel code, 96972k reserved, 1312k data, 168k init)
Calibrating delay using timer specific routine.. 6538.09 BogoMIPS (lpj=13076195)
Security Framework v1.0.0 initialized
SELinux: Initializing.
SELinux: Starting in permissive mode
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU: Physical Processor ID: 7
CPU: Processor Core ID: 1
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 377A0 could not acquire Mutex [2] [20060707]
Initializing CPU#1
migration_cost=1074
migration_cost=1074Initializing CPU#2
migration_cost=1074
Brought up 4 CPUs
Initializing CPU#3
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel: domain hash size = 128
NetLabel: protocols = UNLABELED CIPSOv4
NetLabel: unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 262144 (order: 9, 2097152 bytes)
TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 262144 bind 65536)
TCP reno registered
IA-32 Microcode Update Driver: v1.14-xen <tigran@veritas.com>
audit: initializing netlink socket (disabled)
audit(1193918686.777:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
SELinux: Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key 991108A46E99ED4B
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Xen virtual console successfully installed as xvc0
Event-channel device installed.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
ide-floppy driver 0.99.newide
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
XENBUS: Device with no driver: device/vbd/51712
XENBUS: Device with no driver: device/vif/0
Write protecting the kernel read-only data: 439k
Red Hat nash version 5.1.19.6 starting
Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
Creating block device nodes.
Loading uhci-hcd.ko module
USB Universal Host Controller Interface driver v3.0
Loading ohci-hcd.ko module
Loading ehci-hcd.ko module
Loading jbd.ko module
Loading ext3.ko module
Loading xenblk.ko module
Registering block device major 202
xvda: xvda1 xvda2
Loading dm-mod.ko module
device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised: dm-devel@redhat.com
Loading dm-mirror.ko module
Loading dm-zero.ko module
Loading dm-snapshot.ko module
Making device-mapper control node
Scanning logical volumes
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
Activating logical volumes
2 logical volume(s) in volume group "VolGroup00" now active
Creating root device.
Mounting root filesystem.
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Setting up other filesystems.
Setting up new root fs
no fstab.sys, mounting internal defaults
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
SELinux: Disabled at runtime.
SELinux: Unregistering netfilter hooks
audit(1193918690.801:2): selinux=0 auid=4294967295
INIT: version 2.86 booting
Welcome to CentOS release 5 (Final)
Press 'I' to enter interactive startup.
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
Setting clock (utc): Thu Nov 1 20:04:50 SGT 2007 [ OK ]
Starting udev: [ OK ]
Setting hostname centos5: [ OK ]
Setting up Logical Volume Management: 2 logical volume(s) in volume group "VolGroup00" now active
[ OK ]
Checking filesystems
Checking all file systems.
[/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/VolGroup00/LogVol00
/dev/VolGroup00/LogVol00: clean, 42848/2080768 files, 369765/2080768 blocks
[/sbin/fsck.ext3 (1) -- /boot] fsck.ext3 -a /dev/xvda1
/boot: clean, 36/26104 files, 15441/104388 blocks
[ OK ]
Remounting root filesystem in read-write mode: [ OK ]
Mounting local filesystems: [ OK ]
Enabling local filesystem quotas: [ OK ]
Enabling /etc/fstab swaps: [ OK ]
INIT: Entering runlevel: 3
Entering non-interactive startup
Starting background readahead: [ OK ]
Checking for hardware changes [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Starting auditd: [ OK ]
Starting system logger: [ OK ]
Starting kernel logger: [ OK ]
Starting irqbalance: [ OK ]
Starting portmap: [ OK ]
Starting NFS statd: [ OK ]
Starting RPC idmapd: [ OK ]
Starting system message bus: [ OK ]
[ OK ] Bluetooth services:[ OK ]
Mounting other filesystems: [ OK ]
Starting PC/SC smart card daemon (pcscd): [ OK ]
Starting hidd: [ OK ]
Starting autofs: Loading autofs4: [ OK ]
Starting automount: [ OK ]
[ OK ]
Starting cups: [ OK ]
Starting sshd: [ OK ]
Starting xinetd: [ OK ]
Starting sendmail: [ OK ]
Starting sm-client: [ OK ]
Starting console mouse services: [ OK ]
Starting crond: [ OK ]
Starting anacron: [ OK ]
Starting atd: [ OK ]
Starting yum-updatesd: [ OK ]
Starting Avahi daemon... [ OK ]
Starting HAL daemon: [ OK ]
Starting smartd: [ OK ]
CentOS release 5 (Final)
Kernel 2.6.18-8.el5xen on an x86_64
centos5 login: chihung
Password:
Last login: Thu Nov 1 19:55:29 from 10.0.12.33
[chihung@centos5 ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
7.7G 1.2G 6.2G 16% /
/dev/xvda1 99M 12M 82M 13% /boot
tmpfs 2.0G 0 2.0G 0% /dev/shm
[chihung@centos5 ~]$ which tclsh
/usr/bin/tclsh
[chihung@centos5 ~]$ tclsh
% parray tcl_platform
tcl_platform(byteOrder) = littleEndian
tcl_platform(machine) = x86_64
tcl_platform(os) = Linux
tcl_platform(osVersion) = 2.6.18-8.el5xen
tcl_platform(platform) = unix
tcl_platform(threaded) = 1
tcl_platform(user) = chihung
tcl_platform(wordSize) = 8
% set tcl_patchLevel
8.4.13
% exit
[chihung@centos5 ~]$ exit
[chihung@centos5 ~]$ su -
[root@centos5 proc]# xentop
xentop - 12:13:56 Xen 3.0.4-1-xvm
2 domains: 1 running, 1 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 33029676k total, 33028064k used, 1612k free CPUs: 16 @ 2613MHz
NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_
RD VBD_WR SSID
centos5 --b--- 8 0.0 4194072 12.7 4194304 12.7 4 1 0 0 1 0
0 0 0
Domain-0 -----r 7350 0.0 28424612 86.1 no limit n/a 16 0 0 0 0 0
0 0 0
[root@centos5 proc]# cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 885
stepping : 2
cpu MHz : 2613.400
cache size : 1024 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips : 6538.09
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 885
stepping : 2
cpu MHz : 2613.400
cache size : 1024 KB
physical id : 1
siblings : 1
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips : 6538.09
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 2
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 885
stepping : 2
cpu MHz : 2613.400
cache size : 1024 KB
physical id : 2
siblings : 1
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips : 6538.09
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 3
vendor_id : AuthenticAMD
cpu family : 15
model : 33
model name : Dual Core AMD Opteron(tm) Processor 885
stepping : 2
cpu MHz : 2613.400
cache size : 1024 KB
physical id : 3
siblings : 1
core id : 0
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy
bogomips : 6538.09
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
[root@centos5 proc]# cat /proc/meminfo
MemTotal: 4194304 kB
MemFree: 3911712 kB
Buffers: 11708 kB
Cached: 117648 kB
SwapCached: 0 kB
Active: 51032 kB
Inactive: 105476 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 4194304 kB
LowFree: 3911712 kB
SwapTotal: 2031608 kB
SwapFree: 2031608 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 27168 kB
Mapped: 8720 kB
Slab: 11084 kB
PageTables: 2612 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 4128760 kB
Committed_AS: 66944 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 1080 kB
VmallocChunk: 34359737267 kB
[root@centos5 proc]# uname -a
Linux centos5 2.6.18-8.el5xen #1 SMP Thu Mar 15 19:56:43 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
[root@centos5 proc]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:16:3E:14:84:E5
inet addr:10.0.12.34 Bcast:10.0.12.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fe14:84e5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:138 errors:0 dropped:0 overruns:0 frame:0
TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9518 (9.2 KiB) TX bytes:9536 (9.3 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:560 (560.0 b) TX bytes:560 (560.0 b)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@centos5 proc]# top
top - 20:10:23 up 5 min, 1 user, load average: 0.00, 0.04, 0.02
Tasks: 78 total, 1 running, 77 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 4194304k total, 281992k used, 3912312k free, 11796k buffers
Swap: 2031608k total, 0k used, 2031608k free, 117720k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1654 root 15 0 12568 1212 916 R 0 0.0 0:00.03 top
1 root 18 0 10308 712 592 S 0 0.0 0:00.06 init [3]
2 root RT 0 0 0 0 S 0 0.0 0:00.00 [migration/0]
3 root 34 19 0 0 0 S 0 0.0 0:00.00 [ksoftirqd/0]
4 root RT 0 0 0 0 S 0 0.0 0:00.00 [watchdog/0]
5 root 10 -5 0 0 0 S 0 0.0 0:00.00 [events/0]
6 root 10 -5 0 0 0 S 0 0.0 0:00.00 [khelper]
7 root 10 -5 0 0 0 S 0 0.0 0:00.00 [kthread]
9 root 10 -5 0 0 0 S 0 0.0 0:00.00 [xenwatch]
10 root 10 -5 0 0 0 S 0 0.0 0:00.00 [xenbus]
14 root RT -5 0 0 0 S 0 0.0 0:00.00 [migration/1]
15 root 34 19 0 0 0 S 0 0.0 0:00.00 [ksoftirqd/1]
16 root RT -5 0 0 0 S 0 0.0 0:00.00 [watchdog/1]
17 root 10 -5 0 0 0 S 0 0.0 0:00.00 [events/1]
[root@centos5 proc]# exit
[chihung@centos5 ~]$ exit
CentOS release 5 (Final)
Kernel 2.6.18-8.el5xen on an x86_64
centos5 login: root@opensolaris#
To manage those guest domains, you need to use "virsh"
root@opensolaris# virsh
Welcome to virsh, the virtualization interactive terminal.
Type: 'help' for help with commands
'quit' to quit
virsh # help
Commands:
capabilities capabilities
connect (re)connect to hypervisor
console connect to the guest console
create create a domain from an XML file
start start a (previously defined) inactive domain
destroy destroy a domain
define define (but don't start) a domain from an XML file
domid convert a domain name or UUID to domain id
domuuid convert a domain name or id to domain UUID
dominfo domain information
domname convert a domain id or UUID to domain name
domstate domain state
dumpxml domain information in XML
help print help
list list domains
nodeinfo node information
quit quit this interactive terminal
reboot reboot a domain
restore restore a domain from a saved state in a file
resume resume a domain
save save a domain state to a file
schedinfo show/set scheduler parameters
dump dump the core of a domain to a file for analysis
shutdown gracefully shutdown a domain
setmem change memory allocation
setmaxmem change maximum memory limit
setvcpus change number of virtual CPUs
suspend suspend a domain
undefine undefine an inactive domain
vcpuinfo domain vcpu information
vcpupin control domain vcpu affinity
version show version
vncdisplay vnc display
attach-device attach device from an XML file
detach-device detach device from an XML file
virsh # vcpuinfo centos5
VCPU: 0
CPU: 7
State: blocked
CPU time: 4.3s
CPU Affinity: yyyyyyyyyyyyyyyy
VCPU: 1
CPU: 0
State: blocked
CPU time: 1.9s
CPU Affinity: yyyyyyyyyyyyyyyy
VCPU: 2
CPU: 3
State: blocked
CPU time: 1.4s
CPU Affinity: yyyyyyyyyyyyyyyy
VCPU: 3
CPU: 12
State: blocked
CPU time: 1.2s
CPU Affinity: yyyyyyyyyyyyyyyy
virsh # nodeinfo
CPU model: i86pc
CPU(s): 16
CPU frequency: 2613 MHz
CPU socket(s): 8
Core(s) per socket: 2
Thread(s) per core: 1
NUMA cell(s): 1
Memory size: 33029120 kB
virsh # version
Compiled against library: libvir 0.2.3
Using library: libvir 0.2.3
Using API: Xen 3.0.1
Running hypervisor: Xen 3.0
virsh # dumpxml centos5
<domain type='xen' id='8'>
<name>centos5</name>
<uuid>3816e1f75e9518410adc5fc4a5360aa5</uuid>
<bootloader>/usr/lib/xen/bin/pygrub</bootloader>
<os>
<type>linux</type>
</os>
<memory>4194304</memory>
<vcpu>4</vcpu>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<interface type='ethernet'>
<mac address='00:16:3e:14:84:e5'/>
</interface>
<disk type='file' device='disk'>
<driver name='file'/>
<source file='/data/xvm/centos5.xvm'/>
<target dev='xvda'/>
</disk>
<console tty='/dev/pts/3'/>
</devices>
</domain>
virsh # dumpxml Domain-0
<domain type='xen' id='0'>
<name>Domain-0</name>
<uuid>00000000000000000000000000000000</uuid>
<memory>28423168</memory>
<vcpu>16</vcpu>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
</devices>
</domain>
virsh # quit
BTW, the xm, virt-install and virsh frontend to xVM are mostly implemented in Python.
root@opensolaris# pwd /usr/lib/python2.4/vendor-packages/xen root@opensolaris# ls __init__.py __init__.pyc lowlevel sv util web xend xm root@opensolaris# pwd /usr/lib/python2.4/vendor-packages/xen/xm root@opensolaris# ls XenAPI.py cfgbootpolicy.pyc dumppolicy.py labels.pyc migrate.py resources.pyc XenAPI.pyc console.py dumppolicy.pyc loadpolicy.py migrate.pyc rmlabel.py __init__.py console.pyc getlabel.py loadpolicy.pyc new.py rmlabel.pyc __init__.pyc create.py getlabel.pyc main.py new.pyc shutdown.py addlabel.py create.pyc help.py main.pyc opts.py shutdown.pyc addlabel.pyc dry-run.py help.pyc makepolicy.py opts.pyc cfgbootpolicy.py dry-run.pyc labels.py makepolicy.pyc resources.py root@opensolaris# head -1 /usr/sbin/xm #!/usr/bin/env python
Hope those output helps you to 'interact' with the xvm in openSolaris.
Labels: centos, opensolaris, xen, xvm
posted by chihungchan at 9:03 PM
0 comments
