Re: rsockets and other performance

[Pradeep Satyanarayana <pradeeps@xxxxxxxxxxxxxxxxxx>]

On 06/17/2012 12:22 AM, Or Gerlitz wrote:
> On 6/14/2012 7:09 PM, Sridhar Samudrala wrote:
> > Enabling NETIF_F_SG improves the throughput further by avoiding a 
> > additional kernel memcpy caused by skb_linearize() in dev_queue_xmit().
>
> Hi Sridhar,
>
> If you **only** enable NETIF_F_SG for CM, does this yields any gain? 
> did you had to patch the code for that end?
Hi Or, We did not try only NETIF_F_SG for IPoIB CM. We tried it along 
with NETIF_F_IP_CSUM. We did run
into issues  with netperf i.e. netperf errors out  along with 
NETIF_F_SG. However, iperf worked fine. Did not investigate that further.

Thanks
Pradeep


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