[Gluster-devel] libgfapi zero copy write - application in samba, nfs-ganesha

Ric Wheeler rwheeler at redhat.com
Tue Sep 27 05:21:48 UTC 2016

On 09/27/2016 07:56 AM, Raghavendra Gowdappa wrote:
> +Manoj, +Ben turner, +Ben England.
> @Perf-team,
> Do you think the gains are significant enough, so that smb and nfs-ganesha team can start thinking about consuming this change?
> regards,
> Raghavendra

This is a large gain but I think that we might see even larger gains (a lot 
depends on how we implement copy offload :)).

Worth looking at how we can make use of it.



> ----- Original Message -----
>> From: "Saravanakumar Arumugam" <sarumuga at redhat.com>
>> To: "Gluster Devel" <gluster-devel at gluster.org>
>> Sent: Monday, September 26, 2016 7:18:26 PM
>> Subject: [Gluster-devel] libgfapi zero copy write - application in samba,	nfs-ganesha
>> Hi,
>> I have carried out "basic" performance measurement with zero copy write APIs.
>> Throughput of zero copy write is 57 MB/sec vs default write 43 MB/sec.
>> ( I have modified Ben England's gfapi_perf_test.c for this. Attached the same
>> for reference )
>> We would like to hear how samba/ nfs-ganesha who are libgfapi users can make
>> use of this.
>> Please provide your comments. Refer attached results.
>> Zero copy in write patch: http://review.gluster.org/#/c/14784/
>> Thanks,
>> Saravana

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