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From: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
	sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org
Cc: vladimirk-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org
Subject: Re: [PATCH 1/2] net/mlx5: increase async EQ to avoid EQ overrun
Date: Mon, 05 Feb 2018 11:02:10 -0500	[thread overview]
Message-ID: <1517846530.3936.71.camel@redhat.com> (raw)
In-Reply-To: <1517840992-29813-1-git-send-email-maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

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On Mon, 2018-02-05 at 16:29 +0200, Max Gurtovoy wrote:
> Currently the async EQ has 256 entries only. It might not be big enough
> for the SW to handle all the needed pending events. For example, in case
> of many QPs (let's say 1024) connected to a SRQ created using NVMeOF target
> and the target goes down, the FW will raise 1024 "last WQE reached" events
> and may cause EQ overrun. Increase the EQ to more reasonable size, that beyond
> it the FW should be able to delay the event and raise it later on using internal
> backpressure mechanism.
> 
> Signed-off-by: Max Gurtovoy <maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

Thanks, applied.  But if this gets me in trouble with DaveM for sending
a patch to drivers/net, I'm gonna tell him it's because you sent it here
and excluded netdev@ and that it was part of a series related to an RDMA
issue that I took it, all while giving you the evil eye ;-)

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG KeyID: B826A3330E572FDD
    Key fingerprint = AE6B 1BDA 122B 23B4 265B  1274 B826 A333 0E57 2FDD

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  parent reply	other threads:[~2018-02-05 16:02 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-05 14:29 [PATCH 1/2] net/mlx5: increase async EQ to avoid EQ overrun Max Gurtovoy
2018-02-05 14:29 ` [PATCH 2/2] net/mlx5: fix affinity mask for completion vectors Max Gurtovoy
2018-02-05 14:29   ` Max Gurtovoy
2018-02-05 14:36   ` Sagi Grimberg
     [not found] ` <1517840992-29813-1-git-send-email-maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-02-05 15:28   ` [PATCH 1/2] net/mlx5: increase async EQ to avoid EQ overrun Sagi Grimberg
2018-02-05 16:02   ` Doug Ledford [this message]
     [not found]     ` <1517846530.3936.71.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-02-05 16:10       ` Leon Romanovsky
2018-02-05 18:09   ` Jason Gunthorpe
     [not found]     ` <20180205180904.GB11446-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-02-05 23:11       ` Max Gurtovoy
     [not found]         ` <d572b570-0844-e441-19a0-e6804557fb58-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-02-05 23:16           ` Jason Gunthorpe
     [not found]             ` <20180205231617.GQ11446-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-02-08  5:45               ` Saeed Mahameed
     [not found]                 ` <CALzJLG9QQ_B4xj-E+HtpxUWZhFU9eWeqSNHSaQjf5HH=9TPXTg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-02-08 16:26                   ` Jason Gunthorpe
     [not found]                     ` <20180208162605.GK9051-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2018-02-08 16:39                       ` Leon Romanovsky
2018-02-08 18:58                       ` Saeed Mahameed

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