From: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>
To: "Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Hal Rosenstock
<hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: IB/cma: Make timeout dependent on the subnet timeout
Date: Fri, 25 Apr 2014 19:47:18 +0200 [thread overview]
Message-ID: <535A9FA6.4020207@acm.org> (raw)
In-Reply-To: <1828884A29C6694DAF28B7E6B8A82373992F50A6-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
On 04/25/14 18:56, Hefty, Sean wrote:
> Btw, up til now most of the requests regarding CM timeouts has been to
> increase it. We need to make sure that we don't end up breaking that.
> Even if we set this timeout to 0, the total timeout for a connection
> request is 2 x packet lifetime x # retries. With a 1 second packet
> lifetime, that's still 30 seconds. What timeout range are you looking
> for? The app could always set a separate timer and cancel the request
> as well.
What I had noticed is that with the current timeout settings after a
cable pull it can take really long before a cm_id object reaches
TimeWait exit state. Timeout settings that are between 1/4th and 1/8th
of the current settings result in more reasonable behavior.
Bart.
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prev parent reply other threads:[~2014-04-25 17:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-22 13:16 IB/cma: Make timeout dependent on the subnet timeout Bart Van Assche
[not found] ` <53566BB5.5030203-HInyCGIudOg@public.gmane.org>
2014-04-22 18:41 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373992F2F15-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-04-23 12:30 ` Hal Rosenstock
[not found] ` <5357B25D.2000108-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-04-23 12:46 ` Bart Van Assche
[not found] ` <5357B626.8050209-HInyCGIudOg@public.gmane.org>
2014-04-23 12:55 ` Hal Rosenstock
[not found] ` <5357B83A.5070000-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-04-23 14:34 ` Weiny, Ira
2014-04-23 13:44 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373992F32A2-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-04-24 7:39 ` Or Gerlitz
[not found] ` <5358BF9D.4030409-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-04-25 2:59 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373992F4F6E-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-04-25 16:21 ` Bart Van Assche
[not found] ` <535A8BA6.4090603-HInyCGIudOg@public.gmane.org>
2014-04-25 16:56 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373992F50A6-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-04-25 17:47 ` Bart Van Assche [this message]
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