From: "Václav Zindulka" <vaclav.zindulka@tlapnet.cz>
To: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Linux Kernel Network Developers <netdev@vger.kernel.org>
Subject: Re: iproute2: tc deletion freezes whole server
Date: Sun, 24 May 2020 12:03:54 +0200 [thread overview]
Message-ID: <CANxWus9v0Xn+RgyELT_fEOXiTUaf=z_GGCC695+Dy2LpXBcERg@mail.gmail.com> (raw)
In-Reply-To: <CAM_iQpV71mVNn30bgOzGyjxKeD+2HS+MwJBdrq8Vg-g2HzM1aA@mail.gmail.com>
On Tue, May 19, 2020 at 7:57 PM Cong Wang <xiyou.wangcong@gmail.com> wrote:
>
> On Tue, May 19, 2020 at 1:04 AM Václav Zindulka
> <vaclav.zindulka@tlapnet.cz> wrote:
> > >
> > > Let me think how to fix this properly, I have some ideas and will provide
> > > you some patch(es) to test soon.
> >
> > Sure, I'll wait. I have plenty of time now with the main problem fixed :-)
>
> Can you help to test the patches below?
> https://github.com/congwang/linux/commits/qdisc_reset2
>
> I removed the last patch you previously tested and added two
> more patches on top. These two patches should get rid of most
> of the unnecessary resets. I tested them with veth pair with 8 TX
> queues, but I don't have any real physical NIC to test.
>
> Thanks.
I've tested it and I have to admit that your Kung-fu is even better
than mine :-D My large ruleset with over 13k qdiscs defined got from
22s to 520ms. I've tested downtime of interface during deletion of
root qdisc and it corresponds to the time I measured so it is great.
/usr/bin/time -p tc qdisc del dev enp1s0f0np0 root
real 0.52
user 0.00
sys 0.52
I've even added my patch for only active queues but it didn't make any
difference from your awesome patch :-)
Thank you very much. You helped me really a lot.
next prev parent reply other threads:[~2020-05-24 10:04 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-22 18:06 iproute2: tc deletion freezes whole server Václav Zindulka
2020-03-23 18:17 ` Cong Wang
2020-03-24 16:27 ` Václav Zindulka
2020-03-24 22:57 ` Cong Wang
2020-03-25 11:27 ` Václav Zindulka
2020-03-25 13:33 ` Václav Zindulka
2020-03-25 17:43 ` Cong Wang
2020-03-25 18:23 ` Václav Zindulka
2020-03-26 14:24 ` Václav Zindulka
2020-03-26 17:07 ` Cong Wang
2020-03-26 17:38 ` Cong Wang
2020-03-27 10:35 ` Václav Zindulka
2020-03-28 13:04 ` Václav Zindulka
2020-03-31 5:59 ` Cong Wang
2020-03-31 12:46 ` Václav Zindulka
2020-04-08 20:18 ` Cong Wang
2020-04-12 20:17 ` Václav Zindulka
2020-04-13 17:28 ` Cong Wang
2020-04-15 15:01 ` Václav Zindulka
2020-04-30 12:40 ` Václav Zindulka
2020-05-04 17:46 ` Cong Wang
2020-05-04 20:36 ` Cong Wang
2020-05-05 8:46 ` Václav Zindulka
2020-05-07 18:52 ` Cong Wang
2020-05-08 13:59 ` Václav Zindulka
2020-05-17 19:35 ` Cong Wang
2020-05-18 14:16 ` Václav Zindulka
2020-05-18 18:22 ` Cong Wang
2020-05-19 8:04 ` Václav Zindulka
2020-05-19 17:56 ` Cong Wang
2020-05-24 10:03 ` Václav Zindulka [this message]
2020-05-26 18:37 ` Cong Wang
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='CANxWus9v0Xn+RgyELT_fEOXiTUaf=z_GGCC695+Dy2LpXBcERg@mail.gmail.com' \
--to=vaclav.zindulka@tlapnet.cz \
--cc=netdev@vger.kernel.org \
--cc=xiyou.wangcong@gmail.com \
/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).