From: Gabriele Svelto <gabriele.svelto-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Anuj Kalia <anujkaliaiitd-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: RDMA and memory ordering
Date: Wed, 13 Nov 2013 19:23:46 +0100 [thread overview]
Message-ID: <5283C3B2.6010106@gmail.com> (raw)
In-Reply-To: <CADPSxAh6i74j8JVmWncttN6W4ithTGmsMgqWWpoBy2Z8RRb=_g@mail.gmail.com>
On 12/11/2013 11:31, Anuj Kalia wrote:
> I believe the atomic operations would be a lot more expensive than
> reads/writes. I'm targetting maximum performance so I don't want to
> look that way yet.
This sounds like premature optimization to me which as you know is the
root of all evil :)
Try using the atomic primitives, they have been designed specifically
for this kind of scenario, and then measure their performance in the
real world before spending time on optimizing something that might just
be fast enough for your purposes (and far more robust). If you're
already polling your CQs those operations will be *very* fast.
Gabriele
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next prev parent reply other threads:[~2013-11-13 18:23 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-10 10:46 RDMA and memory ordering Anuj Kalia
[not found] ` <CADPSxAhAGYZude8CM65-UDvfiPscStgcNsAfs=2XBbntg-wL0w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-12 10:16 ` Gabriele Svelto
[not found] ` <5281FFF9.5070705-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-11-12 10:31 ` Anuj Kalia
2013-11-12 18:31 ` Jason Gunthorpe
[not found] ` <20131112183142.GB6639-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-11-12 20:59 ` Anuj Kalia
[not found] ` <CADPSxAgF1CAiYoYbxbCON4NCD-tH8cAsJFRtECkTGJJQC4MXCg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-12 21:11 ` Jason Gunthorpe
[not found] ` <20131112211123.GA29132-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-11-13 6:55 ` Anuj Kalia
[not found] ` <CADPSxAhzmaut9s9L1fv5urhzX8xKU9GbL6z1TkOX3FuM4NUsww-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-13 18:09 ` Jason Gunthorpe
[not found] ` <20131113180915.GA6597-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-11-14 5:12 ` Anuj Kalia
[not found] ` <CADPSxAiepGuzWYXjyDxnSzER5MqL57fZ9mh83SLwV461PwZO3Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-14 19:05 ` Jason Gunthorpe
[not found] ` <20131114190514.GB21549-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-11-14 19:33 ` Anuj Kalia
[not found] ` <CADPSxAg0k5SuxCX=3CMNV8-xME55p3iL4BMqnq0ji---kN6ZEg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-11-14 19:47 ` Anuj Kalia
2013-11-13 18:23 ` Gabriele Svelto [this message]
[not found] ` <5283C3B2.6010106-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-11-14 2:11 ` Anuj Kalia
-- strict thread matches above, loose matches on Subject: below --
2013-11-11 23:13 Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A8237388CF721E-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-11-12 7:28 ` Anuj Kalia
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