Re: [vserver] vserver scalability

From: Nirmal Guhan <vavatutu_at_gmail.com>
Date: Mon 07 Jun 2010 - 19:09:13 BST
Message-ID: <AANLkTinuZwVVZMvfoHnSz4Cmgwoip7ldS4il-AJuquW9@mail.gmail.com>

Thanks everyone for the reply.
--Nirmal--

On Mon, Jun 7, 2010 at 6:01 AM, Eugen Leitl <eugen@leitl.org> wrote:

> On Mon, Jun 07, 2010 at 11:29:56AM +0200, Juraj Pisarcik wrote:
> > My highest number on 2x dualcore Opteron with 16GB RAM was approx. 50
> servers.
> > It was mostly webservers (Apache Tomcat, HTTPD, ...) and databases
> > and some other stuff(Samba, ...). Problem was SHM, because I'm still
> > running 32-bit kernel on this server. DB servers needs a lot of SHM
> > and on 32-bit is upper limit max. 4GB SHM.
>
> I'm running 253 uloaded vservers (nginx+postfix+ssh) on a 4 GByte
> dual-core Atom server.
>
> eryllium:~# vserver-stat
> CTX PROC VSZ RSS userTIME sysTIME UPTIME NAME
> 2 10 328.7M 14.2M 14m31s17 10m37s84 8d04h45 v2
> 3 9 357.1M 14.1M 9m03s04 6m23s94 8d04h45 v3
> 4 9 307.6M 14.2M 8m12s62 5m59s13 8d04h45 v4
> 5 9 307.2M 14.2M 8m04s78 5m59s68 8d04h44 v5
> 6 9 378.6M 14.2M 10m30s55 7m56s51 8d04h44 v6
> 7 9 357.1M 14.2M 10m47s92 7m58s68 8d04h44 v7
> ...
>
> 252 9 357.1M 12.4M 4m40s68 3m37s14 8d04h45 v252
> 253 9 357.1M 12.4M 4m20s41 3m19s12 8d04h45 v253
> 254 9 356.6M 12.4M 5m43s40 3m47s88 8d04h45 v254
>
> beryllium:~# w
> 15:05:14 up 8 days, 4:48, 1 user, load average: 0.13, 0.14, 0.45
> USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
> root pts/0 helium.ativel.co 15:04 0.00s 0.05s 0.02s w
>
> beryllium:~# cat /proc/meminfo
> MemTotal: 4063316 kB
> MemFree: 441340 kB
> Buffers: 854120 kB
> Cached: 319320 kB
> SwapCached: 32860 kB
> Active: 1192708 kB
> Inactive: 1010560 kB
> Active(anon): 575204 kB
> Inactive(anon): 456456 kB
> Active(file): 617504 kB
> Inactive(file): 554104 kB
> Unevictable: 0 kB
> Mlocked: 0 kB
> SwapTotal: 3229056 kB
> SwapFree: 3082628 kB
> Dirty: 216 kB
> Writeback: 0 kB
> AnonPages: 997936 kB
> Mapped: 8792 kB
> Slab: 1105764 kB
> SReclaimable: 913432 kB
> SUnreclaim: 192332 kB
> PageTables: 191452 kB
> NFS_Unstable: 0 kB
> Bounce: 0 kB
> WritebackTmp: 0 kB
> CommitLimit: 5260712 kB
> Committed_AS: 4014436 kB
> VmallocTotal: 34359738367 kB
> VmallocUsed: 281164 kB
> VmallocChunk: 34359454079 kB
> HugePages_Total: 0
> HugePages_Free: 0
> HugePages_Rsvd: 0
> HugePages_Surp: 0
> Hugepagesize: 2048 kB
> DirectMap4k: 3584 kB
> DirectMap2M: 4190208 kB
>
>
> > Juraj
> >
> > On Thu, Jun 3, 2010 at 7:44 PM, JF Straeten <jfstraeten@scarlet.be>
> wrote:
> > > Hi,
> > >
> > > On Thu, Jun 03, 2010 at 10:04:33AM -0700, Nirmal Guhan wrote:
> > >
> > >> Has anyone in this list done a scalability test on vserver ? Am
> > >> particularly interested to know how many virtual servers can be
> > >> spawned in a single host?
> > >
> > > I'm aware of this paper, related to OpenVZ :
> > >
> > > http://www.montanalinux.org/openvz-experiment.html
> > >
> > > It can only be better under VServer :-)
> > >
> > > Hih,
> > >
> > > --
> > >
> > > JFS.
> > >
> --
> Eugen* Leitl leitl http://leitl.org
> ______________________________________________________________
> ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
> 8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
>
Received on Tue Jun 8 00:59:41 2010

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