From: Stephen Hemminger <stephen@networkplumber.org>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: dev@dpdk.org, Patrik Andersson <patrik.r.andersson@ericsson.com>,
Jan Wickbom <jan.wickbom@ericsson.com>
Subject: Re: [dpdk-dev] [PATCH v6] vhost: allow for many vhost user ports
Date: Wed, 21 Dec 2016 10:06:36 -0800 [thread overview]
Message-ID: <20161221100636.71a27b22@xeon-e3> (raw)
In-Reply-To: <1482313513-1709-1-git-send-email-yuanhan.liu@linux.intel.com>
On Wed, 21 Dec 2016 17:45:13 +0800
Yuanhan Liu <yuanhan.liu@linux.intel.com> wrote:
> From: Jan Wickbom <jan.wickbom@ericsson.com>
>
> Currently select() is used to monitor file descriptors for vhostuser
> ports. This limits the number of ports possible to create since the
> fd number is used as index in the fd_set and we have seen fds > 1023.
> This patch changes select() to poll(). This way we can keep an
> packed (pollfd) array for the fds, e.g. as many fds as the size of
> the array.
>
> Also see:
> http://dpdk.org/ml/archives/dev/2016-April/037024.html
>
> Reported-by: Patrik Andersson <patrik.r.andersson@ericsson.com>
> Signed-off-by: Jan Wickbom <jan.wickbom@ericsson.com>
> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Why not epoll()? It scales much better. The old System V poll
is just as bad with 1023 fd's.
next prev parent reply other threads:[~2016-12-21 18:06 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-01 15:26 [dpdk-dev] [PATCH] " Jan Wickbom
2016-12-06 6:56 ` Yuanhan Liu
2016-12-06 11:42 ` Jan Wickbom
2016-12-07 7:43 ` Yuanhan Liu
2016-12-07 10:12 ` Yuanhan Liu
2016-12-07 13:23 ` Jan Wickbom
2016-12-08 5:50 ` Yuanhan Liu
2016-12-12 16:55 ` Jan Wickbom
2016-12-07 12:46 ` [dpdk-dev] [PATCH v2] " Jan Wickbom
2016-12-12 16:50 ` [dpdk-dev] [PATCH v3] " Jan Wickbom
2016-12-13 9:14 ` Yuanhan Liu
2016-12-13 13:15 ` Jan Wickbom
2016-12-13 13:19 ` [dpdk-dev] [PATCH v4] " Jan Wickbom
2016-12-14 3:25 ` Yuanhan Liu
2016-12-14 15:30 ` [dpdk-dev] [PATCH v5] " Jan Wickbom
2016-12-21 9:45 ` [dpdk-dev] [PATCH v6] " Yuanhan Liu
2016-12-21 18:06 ` Stephen Hemminger [this message]
2016-12-22 3:16 ` Yuanhan Liu
2017-01-12 4:05 ` Yuanhan Liu
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