From: Eric Dumazet <eric.dumazet@gmail.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [PATCH net] ixgbe: check return value of napi_complete_done()
Date: Thu, 20 Sep 2018 16:49:06 -0700 [thread overview]
Message-ID: <028b4cea-0e3f-fab5-7a74-cf003bbd1134@gmail.com> (raw)
In-Reply-To: <E4A7BD0D-B091-4FBD-94A9-F0104729DCF6@fb.com>
On 09/20/2018 04:43 PM, Song Liu wrote:
>
> I tried to totally skip ndo_poll_controller() here. It did avoid hitting
> the issue. However, netpoll will drop (fail to send) more packets.
>
Why is it failing ?
If you are under high memory pressure, then maybe if you absolutely want memory to send
netpoll packets, you want to grab all NAPI contexts as a way to prevent other cpus
from feeding incoming packets to the host and add more memory pressure ;)
next prev parent reply other threads:[~2018-09-20 23:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 19:01 [Intel-wired-lan] [PATCH net] ixgbe: check return value of napi_complete_done() Song Liu
2018-09-20 20:35 ` Eric Dumazet
2018-09-20 21:01 ` Jeff Kirsher
2018-09-20 22:42 ` Song Liu
2018-09-20 23:22 ` Eric Dumazet
2018-09-20 23:43 ` Song Liu
2018-09-20 23:49 ` Eric Dumazet [this message]
2018-09-21 7:17 ` Song Liu
2018-09-21 13:33 ` Eric Dumazet
2018-09-21 14:55 ` Alexei Starovoitov
2018-09-21 14:59 ` Eric Dumazet
2018-09-21 15:14 ` Alexei Starovoitov
2018-09-21 15:43 ` Eric Dumazet
2018-09-27 16:12 ` Bowers, AndrewX
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=028b4cea-0e3f-fab5-7a74-cf003bbd1134@gmail.com \
--to=eric.dumazet@gmail.com \
--cc=intel-wired-lan@osuosl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox