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It has to do with ssleep() waiting in IO. You can tell with ps long format
output. You'd have to switch over to schedule_timeout() like they used to do
it in kernel-2.4 ipvs. That's what I found on Fedora with kernel-2.6 ipvs
and think you're hitting the same problem.
Roger
On 9/8/05, Luca Maranzano <liuk001@xxxxxxxxx> wrote:
>
> Hello all,
>
> I've set up a Linux Virtual Server on 2 Debian 3.1 boxes with the
> following software:
>
> - kernel 2.6.11-smp (1 CPU with hyper threading)
> - heartbeat 1.2.3
> - ldirectord 1.2.3
> - ipvsadm 1.24+1.21-1
>
> I need to set up a Local Director to balance a bunch of Windows 2000
> Servers where clients connect via RDP (3389/tcp).
>
> In order to support failover and failback I'have configured ipvsadm in
> the following way on both servers:
>
> /sbin/ipvsadm --start-daemon master --mcast-interface eth5
> /sbin/ipvsadm --start-daemon backup --mcast-interface eth5
>
> and it seems to work as expected, connections get synchronized on the
> slave from the master. The only problem is that the CPU load is always
> over 2.00 (when ipvs_syncmaster and ipvs_syncbackup runs both), is
> always 1.00 if I only run ipvs_syncmaster on one node and if I stop
> the daemons it drops down to 0.0. So I'm sure that the ipvsadm daemon
> is eating all CPU time.
>
> Is this a known bug? The systems is still responsive but this high
> load looks really strange to me. May be someone has experienced a
> similar load with a similar setup?
>
> TIA.
> Kind regards,
> Luca
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