Hello,
I have started to play with vserver limits to set limits on guest so
the host allways got some cpu/ram for itself. Right now i am failling to
make it happen. I read the docs on the website but i still have problem
making it work. The cpu limits seems to not be enforced, the ram limits
seems but since i used them the server does not use swap anymore at all
so i wonder if i missconfigured something.
Let's see the settings for the vserver:
My goal is to limit the physical ram to something like 80/90% of the
ram , same thing for the swap so the host still got:
- 10% of cpu
- 10% of ram
- 10% of swap
I want to enforce this on a PIV ht 1Go ram on Debian GNU/Linux 4.0r1
(etch) with :
Versions:
Kernel: 2.6.22.2-vs2.2.0.3
VS-API: ???
util-vserver: 0.30.212; Dec 31 2006, 12:22:23
Features:
CC: gcc, gcc (GCC) 3.3.5 (Debian 1:3.3.5-13)
CXX: g++, g++ (GCC) 3.3.5 (Debian 1:3.3.5-13)
CPPFLAGS: ''
CFLAGS: '-g -O2 -std=c99 -Wall -pedantic -W'
CXXFLAGS: '-g -O2 -ansi -Wall -pedantic -W
-fmessage-length=0'
build/host: i686-pc-linux-gnu/i686-pc-linux-gnu
Use dietlibc: yes
Build C++ programs: yes
Build C99 programs: yes
Available APIs: v13,net,v21
ext2fs Source: e2fsprogs
syscall(2) invocation: alternative
vserver(2) syscall#: 273/glibc
Paths:
prefix: /usr/local
sysconf-Directory: ${prefix}/etc
cfg-Directory: ${prefix}/etc/vservers
initrd-Directory: /etc/init.d
pkgstate-Directory: ${prefix}/var/run/vservers
vserver-Rootdir: /vservers
So i put:
flags:
sched_hard
virt_load
virt_mem
(root)> getconf PAGESIZE
4096
(aqadmin)> more /proc/virtual/40134/limit
Limit current min/max soft/hard hits
PROC: 73 0/ 210 -1/
-1 0
VM: 165385 0/ 808614 -1/
-1 0
VML: 0 0/ 0 -1/
-1 0
RSS: 81226 0/ 235929 200000/
235929 180
ANON: 56588 0/ 220930 -1/
-1 0
RMAP: 24638 0/ 77728 -1/
-1 0
FILES: 870 0/ 1130 -1/
-1 0
OFD: 1309 0/ 1370 -1/
-1 0
LOCKS: 11 0/ 50 -1/
-1 0
SOCK: 76 0/ 106 -1/
-1 0
MSGQ: 0 0/ 0 -1/
-1 0
SHM: 452 0/ 452 -1/
-1 0
SEMA: 5 0/ 5 -1/
-1 0
SEMS: 5 0/ 5 -1/
-1 0
DENT: 66666 0/ 66691 -1/
-1 0
(aqadmin)> more /proc/virtual/40134/sched
FillRate: 9,2
Interval: 10,10
TokensMin: 25
TokensMax: 125
PrioBias: 0
cpu 0: 2210383 258188 35969 57648202 1252440 RI 125 25 125 9/10 2/10 0 0
cpu 1: 1437742 146506 40107 54003732 786430 RI 125 25 125 9/10 2/10 0 0
/proc/virtual/40134/status
UseCnt: 170
Tasks: 50
Flags: 00000006020b0110
BCaps: 00000000344c05ff
CCaps: 0000000000000101
Spaces: 0c020200
for the cpu and the limit you saw upside. Which setting i got wrong to
have the desired effect ? :)
_here a sniplet of top on the host :
_top - 08:53:52 up 3 days, 8:16, 6 users, load average: 0.83, 0.35, 0.20
Tasks: 113 total, 4 running, 109 sleeping, 0 stopped, 0 zombie
Cpu(s):100.0%us, 0.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 1034404k total, 442080k used, 592324k free, 105128k buffers
Swap: 1028152k total, 32k used, 1028120k free, 116696k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13175 root 25 0 92 8 4 R 101 0.0 0:20.15 burnP6
13177 root 25 0 92 12 4 R 100 0.0 0:19.03 burnP6
13148 root 15 0 2232 1152 860 R 1 0.1 0:00.26 top
_and on the vserver:
_top - 08:56:05 up 24 min, 0 users, load average: 0.40, 0.19, 0.07
Tasks: 54 total, 4 running, 50 sleeping, 0 stopped, 0 zombie
Cpu(s): 99.3% us, 0.7% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 800000k total, 287368k used, 512632k free, 0k buffers
Swap: 143716k total, 0k used, 143716k free, 0k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13324 root 25 0 92 12 4 R 99.5 0.0 0:16.84 burnP6
13326 root 25 0 96 12 4 R 97.9 0.0 0:07.50 burnP6
12630 www-data 17 0 19876 7736 4072 S 0.3 1.0 0:00.24 apache2
1 root 15 0 1944 640 544 S 0.0 0.1 0:01.06 init
11892 root 15 0 1632 540 440 S 0.0 0.1 0:00.03 syslogd
Any help appreciated ! :)
regards,
Ghislain.