From: Alexander Kozyrev <akozyrev@mellanox.com>
To: Mohsin Shaikh <mohsinshaikh@niometrics.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] net/mlx5: use open/read/close for reading ib stat
Date: Thu, 9 Apr 2020 22:20:31 +0000 [thread overview]
Message-ID: <AM0PR05MB456145D464996C5E7DA5BC59A2C10@AM0PR05MB4561.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <1586464626-12958-1-git-send-email-mohsinshaikh@niometrics.com>
> -----Original Message-----
> From: Mohsin Shaikh <mohsinshaikh@niometrics.com>
> Sent: Thursday, April 9, 2020 16:37
> To: dev@dpdk.org
> Cc: stable@dpdk.org; Alexander Kozyrev <akozyrev@mellanox.com>; Mohsin
> Shaikh <mohsinshaikh@niometrics.com>
> Subject: [PATCH] net/mlx5: use open/read/close for reading ib stat
>
> fgets(3)/fread(3)/fscanf(3) etc. use mmap(2)/munmap(2) which leads to TLB
> shootdown interrupts to all dpdk app cores including RX cores.
> This can cause packet drops. Use read(2)/write(2) instead.
>
> Bugzilla ID: 440
> Cc: stable@dpdk.org
>
> Signed-off-by: Mohsin Shaikh <mohsinshaikh@niometrics.com>
> ---
Reviewed-by: Alexander Kozyrev <akozyrev@mellanox.com>
next prev parent reply other threads:[~2020-04-09 22:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 20:37 Mohsin Shaikh
2020-04-09 22:20 ` Alexander Kozyrev [this message]
2020-04-13 10:48 ` Slava Ovsiienko
2020-04-14 14:17 ` Raslan Darawsheh
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=AM0PR05MB456145D464996C5E7DA5BC59A2C10@AM0PR05MB4561.eurprd05.prod.outlook.com \
--to=akozyrev@mellanox.com \
--cc=dev@dpdk.org \
--cc=mohsinshaikh@niometrics.com \
--cc=stable@dpdk.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;
as well as URLs for NNTP newsgroup(s).