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Hi.
Yesterday, I tried to find out absolute maximum number of
virtualhosts I can host on my server, and got this message after
40-50VMs:
# vserver vh2-59 start
vcontext: vc_create_context(): Out of memory
This is much lower than expected limit (I have 4GB of memory),
and contrary to above message, there is plenty of free memory:
# free
total used free shared buffers cached
Mem: 3633332 2365060 1268272 0 305952 1706888
-/+ buffers/cache: 352220 3281112
Swap: 2907724 44 2907680
I also checked ulimit, but all of them are either unlimited or
huge enough. I did some searching and wondering if vserver is
limited to 1G (due to 3G/1G split) of memory kernel can use, thus
ignoring other 3GB.
Is this the case? In any case, how can I workaround this issue?
I'm using Debian GNU/Linux (sid/4.0), with 2.6.18-4-vserver-686
kernel package. Current environment and vserver status are as follows:
# vserver-stat
CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME
0 54 259.8M 98.8M 10m35s34 2h46m59 1d19h03 root server
49294 4 7.7M 2.5M 0m00s00 0m00s20 1m37s30 vh2-10
49295 4 7.7M 2.5M 0m00s00 0m00s20 1m36s71 vh2-11
...
49378 4 7.7M 2.5M 0m00s10 0m00s10 0m06s90 vh2-58
# vserver-stat | wc -l
51
# vserver-info
Versions:
Kernel: 2.6.18-4-vserver-686
VS-API: 0x00020002
util-vserver: 0.30.212; Dec 9 2006, 12:26:51
Features:
CC: gcc, gcc (GCC) 4.1.2 20061115 (prerelease)
(Debian 4.1.1-20)
CXX: g++, g++ (GCC) 4.1.2 20061115 (prerelease)
(Debian 4.1.1-20)
CPPFLAGS: ''
CFLAGS: '-Wall -g -O2 -std=c99 -Wall -pedantic -W
- -funit-at-a-time'
CXXFLAGS: '-g -O2 -ansi -Wall -pedantic -W
- -fmessage-length=0 -funit-at-a-time'
build/host: i486-pc-linux-gnu/i486-pc-linux-gnu
Use dietlibc: yes
Build C++ programs: yes
Build C99 programs: yes
Available APIs: compat,v11,fscompat,v13,net,v21,oldproc,olduts
ext2fs Source: e2fsprogs
syscall(2) invocation: alternative
vserver(2) syscall#: 273/glibc
Paths:
prefix: /usr
sysconf-Directory: /etc
cfg-Directory: /etc/vservers
initrd-Directory: $(sysconfdir)/init.d
pkgstate-Directory: /var/run/vservers
vserver-Rootdir: /var/lib/vservers
# dmesg
Linux version 2.6.18-4-vserver-686 (Debian 2.6.18.dfsg.1-10)
(waldi@debian.org) (gcc version 4.1.2 20061115 (prerelease) (Debian
4.1.1-21)) #1 SMP Fri Feb 2 17:58:05 UTC 2007
...
Use a PAE enabled kernel.
3200MB HIGHMEM available.
896MB LOWMEM available.
Thanks in advance.
- --
Taisuke Yamada <tyamadajp_at_spam.rakugaki.org>, http://rakugaki.org/
2268 E9A2 D4F9 014E F11D 1DF7 DCA3 83BC 78E5 CD3A
Message to my public address may not be handled in a timely manner.
For a direct contact, please use my private address on my namecard.
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Received on Sat Feb 24 00:57:50 2007