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On Tue, 4 Jun 2002 stefano.mason@xxxxxxxxxxxx wrote:
>
> Besides the IP_VS_SYNC_CONN_TIMEOUT is possible to tunning other
> parameters, because the "saprouter" application, during a session, receive
> few packet and respond with multitude of it. Since I understood every 50
> incoming packets per connection there will be a new sync, isn't impossible
> to "saprouter" application to reach this threshold.
>
For your application, maybe you can tune this threshold smaller, and set
the IP_VS_SYNC_CONN_TIMEOUT longer.
> [root@lvs1 ipvs]# ipvsadm -l --stats
> IP Virtual Server version 1.0.3 (size=4096)
> Prot LocalAddress:Port Conns InPkts OutPkts InBytes
> OutBytes
> -> RemoteAddress:Port
> TCP saprouter.unix.debis.it:3299 11 1174 0 175223
> 0
> -> cleo.unix.debis.it:3299 6 570 0 81117
> 0
> -> nefe.unix.debis.it:3299 5 604 0 94106
> 0
>
>
> Or is possible to change the behaviour of LVS-SYNC like:
> - sync all ESTABLISHED connection every a specific timeout.
>
We usually perfer not to do this, because it may cause a big data traffic
from the primary load balancer to the backup one. For example, there are
10,000 established connections, the sychronization data will be of around
1M bytes. And, it is hard to choose the right timeout too.
Regards,
Wensong
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