Re: AW: IPoIB GRO

[Erez Shitrit <erezsh-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>]

Hi Markus,

Can you please tell me what is the FW version you have on your ConnectX 
cards?

Thanks, Erez

> Hi Erez,
>
>> don't you see that behaviour in tcpdump? what kernel are you using?
> On server side we have a 3.5 on client side a 3.11 kernel each of them with
> kernel standard drivers/modules. I can see the same pattern of GRO
> aggregation on the client that you mention but only if I disable TSO for
> ib0 on the server side.
>
> The test I'm running on the client is like this. The second and third read
> run are definetly served by the NFS server side cache.
>
> sysctl -w net.ipv4.tcp_mem="4096 65536 4194304"
> sysctl -w net.ipv4.tcp_rmem="4096 65536 4194304"
> sysctl -w net.ipv4.tcp_wmem="4096 65536 4194304"
> sysctl -w net.core.rmem_max=8388608
> sysctl -w net.core.wmem_max=8388608
>
> mount -o nfsvers=3,rsize=262144,wsize=262144 10.10.30.251:/export /mnt
> echo 3 > /proc/sys/vm/drop_caches
> dd if=/mnt/xxx.iso of=/dev/null bs=1M count=5000
> echo 3 > /proc/sys/vm/drop_caches
> dd if=/mnt/xxx.iso of=/dev/null bs=1M count=5000
> echo 3 > /proc/sys/vm/drop_caches
> dd if=/mnt/xxx.iso of=/dev/null bs=1M count=5000
> umount /mnt
>
> Markus

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