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Re: Some NAPI results

To: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>
Subject: Re: Some NAPI results
From: jamal <hadi@xxxxxxxxxx>
Date: Thu, 4 Oct 2001 09:04:59 -0400 (EDT)
Cc: <netdev@xxxxxxxxxxx>
In-reply-to: <15292.23312.641442.909160@xxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx

Now if we can cut that second column to all 0s we are set ;->

cheers,
jamal

On Thu, 4 Oct 2001, Robert Olsson wrote:

>
> Correct!
>
> We were interested to see the the packet distribution on the different CPU's
> with this scheme. Reality had data we couldn't get in the lab. Seems there
> is nothing to complain about. Yet. I'd better say. :-)
>
> cat /proc/net/softnet_stat
> 2b85c320 0000d374 6524ce48 00000000 00000000 00000000 00000000 00000000 
> 0007119d
> 2b8b5e29 0000d615 653eba32 00000000 00000000 00000000 00000000 00000000 
> 00072f44
>
> First  col: pkts
> Second col: drops
> Third  col: time_squeeze (by the polling loop)
> Last   col: cpu_collsions (TX)
>
> eth0: UP Locked MII Full DuplexLink UP
> Admin up    20 hour(s) 23 min 44 sec
> Last input  NOW
> Last output NOW
> 5min RX bit/s   91.5 M
> 5min TX bit/s   57.4 M
> 5min RX pkts/s  14261
> 5min TX pkts/s  12742
>
> Cheers.
>                                               --ro
>
>
> takahashi@xxxxxxxxxxxx writes:
>  >
>  >
>  > Since we are discussing this, heres more data ;->
>  >
>  >
>  > ---------- Forwarded message ----------
>  > Date: Wed, 3 Oct 2001 20:42:43 +0200
>  > From: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>
>  >
>  > Hello!
>  >
>  > Anyway. Uppsala University (35.000 students, 4000 emploees)
>  > has now SMP/NAPI in production.
>  > But reniceed ksoftirqd to -10. Kernel 2.4.10poll SMP.
>  >
>  >
>  > USER       PID %CPU %MEM  SIZE   RSS TTY STAT START   TIME COMMAND
>  > root         1  0.0  0.0  1224   512  ?  S    18:08   0:03 init [5]
>  > root         2  0.0  0.0     0     0  ?  SW   18:08   0:00 (keventd)
>  > root         3 74.2  0.0     0     0  ?  RW<  18:08 100:02 (ksoftirqd_CPU0)
>  > root         4 73.9  0.0     0     0  ?  SW<  18:08  99:39 (ksoftirqd_CPU1)
>  > root         5  0.0  0.0     0     0  ?  SW   18:08   0:00 (kswapd)
>  > root         6  0.0  0.0     0     0  ?  SW   18:08   0:00 (bdflush)
>  > root         7  0.0  0.0     0     0  ?  SW   18:08   0:00 (kupdated)
>  > root        52  0.0  0.0   796   192  ?  S    18:08   0:00 voff
>  > root       570  0.3  7.4 38696 38184  ?  S    18:08   0:28 /sbin/gated
>


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