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Re: [lvs-users] IPVS capacity

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] IPVS capacity
From: Malcolm Turnbull <malcolm@xxxxxxxxxxxxxxxx>
Date: Sun, 16 Mar 2014 17:59:33 +0000
>From my experience you can either do 50,000 TPS with tiny packets , or 850
MB/s with bigger ones.... assuming a 1GB/s pipe i.e. you can saturate the
bandwidth available.

http://blog.loadbalancer.org/what-do-you-mean-my-pipe-is-saturated/
http://haproxy.1wt.eu/10g.html

Most of our customers hit real server (cluster) limits or bandwidth limits
before stressing LVS even on our lowest end hardware which is Atom based.




On 16 March 2014 10:08, <amankiewicz@xxxxxxxxxxxx> wrote:

> Hi all
>
> I'm trying to figure out how many simultaneous conections can handle a
> single ipvs server.
>
> Our server has this settings
> 2 cores CPU at 2,8Ghz,
> 512 MB RAM
> 2.6.32 linux kernel
> NAT method
> ipvsadm-1.25-10.el6.x86_64
> default hashing size table (2^12=4096) in kernel
>
> It will handle one VIP to a pool of real servers providing remote
> application acces to customer users
>
> I've read the doc
> http://www.linuxvirtualserver.org/performance/lvs.ps.gz (2001) so I
> assume that I can expect rougly 4000 conections/sec before servers
> begin to delay requests. It is correct?
>
> I asume that it linearly depends on VIPs used, so if I set up 2VIPs I
> can expect 2000 conecctions/sec per VIP
>
> I will apreciate experiences and docs about ipvs capacity an how to
> scale for larger number of conecctions
>
> Thanks in advance
> Alice
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-- 
Regards,

Malcolm Turnbull.

Loadbalancer.org Ltd.
Phone: +44 (0)870 443 8779
http://www.loadbalancer.org/
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