From: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>
Cc: OFED mailing list
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Chris Worley <worleys-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH] IB/srp: Fix initiator lockup
Date: Wed, 13 Jan 2010 08:58:01 -0800 [thread overview]
Message-ID: <adaeilundra.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <e2e108261001122329u698f13ecibf42c1dc60b5cc04-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> (Bart Van Assche's message of "Wed, 13 Jan 2010 08:29:57 +0100")
> The impact of the ib_post_recv() call is small but measurable. I'll
> publish measurement results soon.
Interesting. If there is overhead you could amortize it by keeping some
number of spare buffers posting, and batching your calls to
ib_post_recv() (eg post a list of 8 buffers every 8 commands, and keep 7
spare buffers posted).
- R.
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prev parent reply other threads:[~2010-01-13 16:58 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-02 12:19 [PATCH] IB/srp: Fix initiator lockup Bart Van Assche
[not found] ` <e2e108261001020419l36319156hb9d625edc2e15d06-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-02 16:05 ` Fwd: " Chris Worley
[not found] ` <f3177b9e1001020805k4dce1991u3733c5a7f6d46aaa-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-02 17:52 ` Bart Van Assche
2010-01-04 1:34 ` David Dillow
[not found] ` <1262568846.13289.4.camel-1q1vX8mYZiGLUyTwlgNVppKKF0rrzTr+@public.gmane.org>
2010-01-04 1:43 ` [RFC PATCH 1/3] IB/srp: differentiate the uses of SRP_SQ_SIZE David Dillow
2010-01-04 1:43 ` [RFC PATCH 2/3] IB/srp: minimal support for SRP_CRED_REQ and SRP_AER_REQ David Dillow
[not found] ` <1262569417-20341-2-git-send-email-dave-i1Mk8JYDVaaSihdK6806/g@public.gmane.org>
2010-01-06 21:48 ` Roland Dreier
[not found] ` <adar5q2sy5q.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-06 23:02 ` David Dillow
[not found] ` <1262818979.2265.13.camel-FqX9LgGZnHWDB2HL1qBt2PIbXMQ5te18@public.gmane.org>
2010-01-06 23:20 ` Roland Dreier
2010-01-04 1:43 ` [RFC PATCH 3/3] IB/srp: export req_limit via sysfs David Dillow
2010-01-04 7:13 ` [PATCH] IB/srp: Fix initiator lockup Bart Van Assche
[not found] ` <e2e108261001032313v472d4b9dm75c3d0b1a9268adc-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-04 8:12 ` David Dillow
[not found] ` <1262592761.13289.13.camel-1q1vX8mYZiGLUyTwlgNVppKKF0rrzTr+@public.gmane.org>
2010-01-04 8:32 ` Bart Van Assche
2010-01-06 21:40 ` Roland Dreier
[not found] ` <adavdfesyi4.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-07 7:59 ` Bart Van Assche
[not found] ` <e2e108261001062359l66384219r650294b4d6e9f3f1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-07 16:26 ` David Dillow
2010-01-06 21:38 ` Roland Dreier
2010-01-06 21:37 ` Roland Dreier
[not found] ` <ada4omyud7c.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-07 7:52 ` Bart Van Assche
[not found] ` <e2e108261001062352l1925f4e1i24bdbdde08056c4c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-07 7:57 ` Roland Dreier
[not found] ` <adak4vuqrcw.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-07 8:03 ` Bart Van Assche
[not found] ` <e2e108261001070003y6881eac7g3e8129e44b78a475-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-07 10:01 ` Bart Van Assche
2010-01-10 6:41 ` Roland Dreier
[not found] ` <adavdfapimb.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-10 10:34 ` Bart Van Assche
[not found] ` <e2e108261001100234k7dcb45cescb9ae133c0cdc256-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-12 17:13 ` Roland Dreier
[not found] ` <ada3a2bp7ow.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-12 17:23 ` Bart Van Assche
[not found] ` <e2e108261001120923w4b405736v8b8e8ae41322823b-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-12 22:57 ` Roland Dreier
[not found] ` <adavdf7nd7k.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-01-12 23:24 ` Jason Gunthorpe
[not found] ` <20100112232421.GA16490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-01-13 7:23 ` Bart Van Assche
[not found] ` <e2e108261001122323p695d8a9cscd992eda25fdba89-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-13 18:16 ` Jason Gunthorpe
[not found] ` <20100113181615.GC16490-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-01-13 18:57 ` Bart Van Assche
[not found] ` <e2e108261001131057g339fc80fn638109f2d441f13a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-13 19:52 ` Jason Gunthorpe
2010-01-13 9:32 ` Bart Van Assche
2010-01-13 7:29 ` Bart Van Assche
[not found] ` <e2e108261001122329u698f13ecibf42c1dc60b5cc04-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-01-13 16:58 ` Roland Dreier [this message]
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