* [LARTC] Dual CPU performance in routing
@ 2006-11-06 9:53 GolemMTM
2006-11-06 10:11 ` Dmytro O. Redchuk
2006-11-06 10:21 ` Alexandru Dragoi
0 siblings, 2 replies; 3+ messages in thread
From: GolemMTM @ 2006-11-06 9:53 UTC (permalink / raw)
To: lartc
Hello
I have question, currently using linux box as router. It only route packets.
Currently there is 80k packets/sec and this cause 90% CPU usage on
Intel Celeron 3ghz CPU.
Did multiprocessor system like 2x XEON DP 3.4ghz will divide CPU
usage between 2 CPU and will allow double routing performance ?
--
Golem
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* Re: [LARTC] Dual CPU performance in routing
2006-11-06 9:53 [LARTC] Dual CPU performance in routing GolemMTM
@ 2006-11-06 10:11 ` Dmytro O. Redchuk
2006-11-06 10:21 ` Alexandru Dragoi
1 sibling, 0 replies; 3+ messages in thread
From: Dmytro O. Redchuk @ 2006-11-06 10:11 UTC (permalink / raw)
To: lartc
On Mon, Nov 06, 2006 at 10:53:25AM +0100, GolemMTM wrote:
> Hello
>
> I have question, currently using linux box as router. It only route packets.
> Currently there is 80k packets/sec and this cause 90% CPU usage on
> Intel Celeron 3ghz CPU.
> Did multiprocessor system like 2x XEON DP 3.4ghz will divide CPU
> usage between 2 CPU and will allow double routing performance ?
If you have two physical eth cards and will assign different irq for
different CPU -- it will. Not sure about double, but significant, i'd say.
>
>
> --
> Golem
--
_,-=._ /|_/|
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`._ _,-. ) _,.-'
` G.m-"^m`m' Dmytro O. Redchuk
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* Re: [LARTC] Dual CPU performance in routing
2006-11-06 9:53 [LARTC] Dual CPU performance in routing GolemMTM
2006-11-06 10:11 ` Dmytro O. Redchuk
@ 2006-11-06 10:21 ` Alexandru Dragoi
1 sibling, 0 replies; 3+ messages in thread
From: Alexandru Dragoi @ 2006-11-06 10:21 UTC (permalink / raw)
To: lartc
GolemMTM wrote:
> Hello
>
> I have question, currently using linux box as router. It only route packets.
> Currently there is 80k packets/sec and this cause 90% CPU usage on
> Intel Celeron 3ghz CPU.
> Did multiprocessor system like 2x XEON DP 3.4ghz will divide CPU
> usage between 2 CPU and will allow double routing performance ?
>
>
>
It will improve performance if irqs are balanced, but not double. Also,
90% seems like a lot. If you use firewalling (many linear rules) and qos
(many linear u32 filter rules), they will cost a lot of performance, you
will se that with top, on soft interrupts (si). I suggest you to use
intel gigabit cards on pci64.
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2006-11-06 9:53 [LARTC] Dual CPU performance in routing GolemMTM
2006-11-06 10:11 ` Dmytro O. Redchuk
2006-11-06 10:21 ` Alexandru Dragoi
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