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From: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>
To: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	David Dillow <dave-i1Mk8JYDVaaSihdK6806/g@public.gmane.org>,
	Vu Pham <vuhuong-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Sebastian Riemer
	<sebastian.riemer-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>,
	Jinpu Wang <jinpu.wang-EIkl63zCoXaH+58JC4qpiA@public.gmane.org>,
	linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v3 11/13] IB/srp: Make HCA completion vector configurable
Date: Tue, 16 Jul 2013 04:58:39 -0600	[thread overview]
Message-ID: <51E5275F.2070009@acm.org> (raw)
In-Reply-To: <51E51C56.50906-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

On 16/07/2013 4:11, Sagi Grimberg wrote:
> This sounds like a nice Idea, but there an inherent problem about
> applications coming and going while the connections are static (somewhat),
> how can you control pinning an arbitrary application running (over SRP
> devices of-course) at certain point of time.
>
> So will you agree at least to give target->comp_vector a default of
> IB_CQ_VECTOR_LEAST_ATTACHED?
>  From my point of view, a user that don't have a slightest clue about
> completion vectors and performance optimization, this is somewhat better
> than doing nothing...

Hello Sagi,

That sounds like an interesting proposal to me. But did the patch that 
adds the IB_CQ_VECTOR_LEAST_ATTACHED feature ever get accepted in the 
upstream Linux kernel ? I have tried to find that symbol in Linux kernel 
v3.11-rc1 but couldn't find it. Maybe I have overlooked something ?

Bart.

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  parent reply	other threads:[~2013-07-16 10:58 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-03 12:41 [PATCH v3 0/13] IB SRP initiator patches for kernel 3.11 Bart Van Assche
     [not found] ` <51D41C03.4020607-HInyCGIudOg@public.gmane.org>
2013-07-03 12:43   ` [PATCH v3 01/13] IB/srp: Fix remove_one crash due to resource exhaustion Bart Van Assche
2013-07-03 12:44   ` [PATCH v3 02/13] IB/srp: Avoid that srp_reset_host() is skipped after a TL error Bart Van Assche
2013-07-03 12:45   ` [PATCH v3 03/13] IB/srp: Fail I/O fast if target offline Bart Van Assche
2013-07-03 12:50   ` [PATCH v3 04/13] IB/srp: Skip host settle delay Bart Van Assche
2013-07-03 12:51   ` [PATCH v3 05/13] IB/srp: Maintain a single connection per I_T nexus Bart Van Assche
2013-07-03 12:54   ` [PATCH v3 07/13] scsi_transport_srp: Add transport layer error handling Bart Van Assche
     [not found]     ` <51D41F13.6060203-HInyCGIudOg@public.gmane.org>
2013-07-03 15:14       ` David Dillow
2013-07-03 16:00         ` Bart Van Assche
     [not found]           ` <51D44A86.5050000-HInyCGIudOg@public.gmane.org>
2013-07-03 17:27             ` David Dillow
     [not found]               ` <1372872474.24238.43.camel-zHLflQxYYDO4Hhoo1DtQwJ9G+ZOsUmrO@public.gmane.org>
2013-07-03 18:24                 ` Bart Van Assche
2013-07-03 18:57                   ` David Dillow
     [not found]                     ` <1372877861.24238.64.camel-zHLflQxYYDO4Hhoo1DtQwJ9G+ZOsUmrO@public.gmane.org>
2013-07-03 23:41                       ` Vu Pham
2013-07-04  8:01                       ` Bart Van Assche
     [not found]                         ` <51D52BD7.1090506-HInyCGIudOg@public.gmane.org>
2013-07-04  8:16                           ` Bart Van Assche
2013-07-08 20:37                           ` David Dillow
2013-07-08 17:26                 ` Vu Pham
     [not found]                   ` <51DAF63D.9010906-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-07-08 18:42                     ` Bart Van Assche
2013-07-03 12:55   ` [PATCH v3 08/13] IB/srp: Add srp_terminate_io() Bart Van Assche
     [not found]     ` <51D41F52.4000409-HInyCGIudOg@public.gmane.org>
2013-07-03 14:08       ` David Dillow
     [not found]         ` <1372860491.24238.0.camel-zHLflQxYYDO4Hhoo1DtQwJ9G+ZOsUmrO@public.gmane.org>
2013-07-03 14:45           ` Bart Van Assche
     [not found]             ` <51D43915.9000007-HInyCGIudOg@public.gmane.org>
2013-07-03 14:57               ` David Dillow
     [not found]                 ` <1372863441.24238.26.camel-zHLflQxYYDO4Hhoo1DtQwJ9G+ZOsUmrO@public.gmane.org>
2013-07-03 15:13                   ` David Dillow
2013-07-03 12:56   ` [PATCH v3 09/13] IB/srp: Use SRP transport layer error recovery Bart Van Assche
2013-07-03 12:57   ` [PATCH v3 10/13] IB/srp: Start timers if a transport layer error occurs Bart Van Assche
2013-07-03 12:58   ` [PATCH v3 11/13] IB/srp: Make HCA completion vector configurable Bart Van Assche
     [not found]     ` <51D41FFC.6070105-HInyCGIudOg@public.gmane.org>
2013-07-14  9:43       ` Sagi Grimberg
     [not found]         ` <51E272A4.5030707-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-07-15 11:06           ` Bart Van Assche
     [not found]             ` <51E3D79D.9070808-HInyCGIudOg@public.gmane.org>
2013-07-15 13:29               ` Sagi Grimberg
     [not found]                 ` <51E3F931.9080903-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-07-15 18:23                   ` Bart Van Assche
     [not found]                     ` <51E43E22.2060502-HInyCGIudOg@public.gmane.org>
2013-07-16 10:11                       ` Sagi Grimberg
     [not found]                         ` <51E51C56.50906-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-07-16 10:58                           ` Bart Van Assche [this message]
     [not found]                             ` <51E5275F.2070009-HInyCGIudOg@public.gmane.org>
2013-07-16 12:41                               ` Sagi Grimberg
2013-07-16 15:11           ` Bart Van Assche
     [not found]             ` <51E56296.2000403-HInyCGIudOg@public.gmane.org>
2013-07-17  9:27               ` Sagi Grimberg
2013-07-03 12:59   ` [PATCH v3 12/13] IB/srp: Make transport layer retry count configurable Bart Van Assche
     [not found]     ` <51D4204E.7040301-HInyCGIudOg@public.gmane.org>
2013-07-03 14:30       ` David Dillow
2013-07-03 13:00   ` [PATCH v3 13/13] IB/srp: Bump driver version and release date Bart Van Assche
2013-07-03 12:53 ` [PATCH v3 06/13] IB/srp: Keep rport as long as the IB transport layer Bart Van Assche
2013-07-03 13:38 ` [PATCH v3 0/13] IB SRP initiator patches for kernel 3.11 Or Gerlitz
2013-07-03 14:38   ` Bart Van Assche

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