From: Bart Van Assche <bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
To: Laurence Oberman <loberman-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
James Hartsock <hartsjc-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: sg_map failures when tuning SRP via ib_srp module parameters for maximum SG entries
Date: Sat, 12 Mar 2016 17:29:02 -0800 [thread overview]
Message-ID: <56E4C25E.7050000@sandisk.com> (raw)
In-Reply-To: <2043305499.21615736.1457830705865.JavaMail.zimbra-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On 03/12/16 16:58, Laurence Oberman wrote:
> Within srpt on the array I have options ib_srpt srp_max_req_size=4148
> On the client I also only have options ib_srpt srp_max_req_size=4148
>
> I have not tuned srp_sq_size as I was only aware of
>
> parm: srp_max_req_size:Maximum size of SRP request messages in bytes. (int)
> parm: srpt_srq_size:Shared receive queue (SRQ) size. (int)
> parm: srpt_service_guid:Using this value for ioc_guid, id_ext, and cm_listen_id instead of using the node_guid of the first HCA.
>
> Please explain what that does.
Hello Laurence,
The srp_sq_size parameter controls the send queue size per RDMA channel.
The default value of this parameter is 4096. I think this is the
parameter that has to be increased to avoid hitting "IB send queue full"
errors.
Bart.
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next prev parent reply other threads:[~2016-03-13 1:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1213561283.21604993.1457793870012.JavaMail.zimbra@redhat.com>
[not found] ` <1213561283.21604993.1457793870012.JavaMail.zimbra-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-03-12 14:56 ` sg_map failures when tuning SRP via ib_srp module parameters for maximum SG entries Laurence Oberman
[not found] ` <1195068688.21605141.1457794577569.JavaMail.zimbra-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-03-12 22:06 ` Sagi Grimberg
[not found] ` <56E492F0.1070609-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2016-03-12 22:21 ` Laurence Oberman
[not found] ` <1578713476.21612303.1457821295989.JavaMail.zimbra-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-03-12 22:24 ` Laurence Oberman
2016-03-13 0:34 ` Bart Van Assche
[not found] ` <56E4B59D.4070701-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2016-03-13 0:39 ` Laurence Oberman
2016-03-13 0:38 ` Bart Van Assche
[not found] ` <56E4B677.6020809-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2016-03-13 0:58 ` Laurence Oberman
[not found] ` <2043305499.21615736.1457830705865.JavaMail.zimbra-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-03-13 1:29 ` Bart Van Assche [this message]
[not found] ` <56E4C25E.7050000-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2016-03-13 22:15 ` Laurence Oberman
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