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He Weitao wrote:
>
> >
> > CONFIG_IP_MASQUERADE_VS_TAB_BITS=#value /* in .config of
> > /usr/src/linux/
> >
> > > Suppose there are 6000 connections to Director at the same time,
> > > and the ppc is default 360s, what should this parameter be set to ?
> > > and what is the upper limit of this parameter? 2^18?
> >
> > yes, although I once ran into problems with kernel panics having 2^18,
> > but 2^17 was always safe for me.
> >
> > Regards,
> >
> > Roberto Nibali, ratz
>
> got it,Thanks. :)
>
> Could you tell me some parameters in your application?
> the number of connections at the same time=
> CONFIG_IP_MASQUERADE_VS_TAB_BITS=
> your memory size=physical mem + swap = +
I've got different lvs-clusters running, but probably the most
interesting one is currently the one in my lab:
ipvs-0.9.9
VS_TAB_BITS=16
memory phys.=128MB
memory swap =256MB
I'm not sure what number I should provide you with, so I print the
vs-table output:
lb2-master-online:/root # ipvsadm
IP Virtual Server version 0.9.8 (size=65536)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.216.12:www wrr persistent 1200
-> 192.168.216.3:www Route 1 13 9151
-> 192.168.216.2:www Route 1 15 12007
TCP 192.168.216.13:www wrr persistent 1200
-> 192.168.216.3:www Route 1 0 0
-> 192.168.216.2:www Route 1 0 0
TCP 192.168.216.12:https wrr persistent 1200
-> 192.168.216.3:https Route 1 0 0
-> 192.168.216.2:https Route 1 0 0
TCP 192.168.216.13:https wrr persistent 1200
-> 192.168.216.3:https Route 1 0 0
-> 192.168.216.2:https Route 1 0 0
lb2-master-online:/root #
BTW, if someone wants ipvsadm to print the correct patch version number,
you should change
line 1929 of /usr/src/linux/net/ipv4/ip_vs.c
from: "IP Virtual Server version 0.9.8 (size=%d)\n"
to : "IP Virtual Server version 0.9.9 (size=%d)\n"
and recompile!
> I am think about the cause of the limit, perhaps memory size?
Possibly, but I'm sure, Wensong nows it and I think he mentioned the
problem once in former days, but I can't remember :)
regards,
Roberto Nibali, ratz
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