From: Eric Dumazet <eric.dumazet@gmail.com>
To: bloat@lists.bufferbloat.net
Subject: Re: [Bloat] [Cake] Fwd: Re: Unable to create htb tc classes more than 64K
Date: Wed, 28 Aug 2019 10:34:12 +0200 [thread overview]
Message-ID: <30baead7-89cc-a025-eb71-2200cf2fd092@gmail.com> (raw)
In-Reply-To: <20190827160409.3c1afcc2@xps13>
On 8/27/19 10:04 PM, Stephen Hemminger wrote:
> On Mon, 26 Aug 2019 09:35:14 +0200
> Toke Høiland-Jørgensen <toke@redhat.com> wrote:
>
>> Turns out that with the "earliest departure time" support in sched_fq,
>> it is now possible to write a shaper in eBPF, thus avoiding the global
>> qdisc lock in sched_htb. This is pretty cool, if you ask me! :)
>>
>> -Toke
>>
>
> Thanks, I may use this to revisit doing netem in eBPF (xnetem).
> Not having this feature was a show stopper at the time.
Note that TCP stack got support for arbitrary per-socket delays.
Very useful to build a complex network emulator with thousands of TCP flows
with very different rtt.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a842fe1425cb20f457abd3f8ef98b468f83ca98b
next prev parent reply other threads:[~2019-08-28 8:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAA5aLPhf1=wzQG0BAonhR3td-RhEmXaczug8n4hzXCzreb+52g@mail.gmail.com>
[not found] ` <CAM_iQpVyEtOGd5LbyGcSNKCn5XzT8+Ouup26fvE1yp7T5aLSjg@mail.gmail.com>
[not found] ` <CAA5aLPiqyhnWjY7A3xsaNJ71sDOf=Rqej8d+7=_PyJPmV9uApA@mail.gmail.com>
[not found] ` <CAM_iQpUH6y8oEct3FXUhqNekQ3sn3N7LoSR0chJXAPYUzvWbxA@mail.gmail.com>
[not found] ` <CAA5aLPjzX+9YFRGgCgceHjkU0=e6x8YMENfp_cC9fjfHYK3e+A@mail.gmail.com>
[not found] ` <CAM_iQpXBhrOXtfJkibyxyq781Pjck-XJNgZ-=Ucj7=DeG865mw@mail.gmail.com>
[not found] ` <CAA5aLPjO9rucCLJnmQiPBxw2pJ=6okf3C88rH9GWnh3p0R+Rmw@mail.gmail.com>
[not found] ` <CAM_iQpVtGUH6CAAegRtTgyemLtHsO+RFP8f6LH2WtiYu9-srfw@mail.gmail.com>
[not found] ` <9cbefe10-b172-ae2a-0ac7-d972468eb7a2@gmail.com>
2019-08-26 7:35 ` [Bloat] " Toke Høiland-Jørgensen
2019-08-27 20:04 ` [Bloat] [Cake] " Stephen Hemminger
2019-08-28 8:34 ` Eric Dumazet [this message]
[not found] ` <CAA93jw6TWUmqsvBDT4tFPgwjGxAmm_S5bUibj16nwp1F=AwyRA@mail.gmail.com>
[not found] ` <48a3284b-e8ba-f169-6a2d-9611f8538f07@gmail.com>
2019-08-27 21:41 ` [Bloat] " Dave Taht
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
List information: https://lists.bufferbloat.net/postorius/lists/bloat.lists.bufferbloat.net/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=30baead7-89cc-a025-eb71-2200cf2fd092@gmail.com \
--to=eric.dumazet@gmail.com \
--cc=bloat@lists.bufferbloat.net \
/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