From: Pavel Begunkov <[email protected]>
To: David Ahern <[email protected]>,
[email protected], [email protected],
[email protected]
Cc: Jakub Kicinski <[email protected]>,
Jonathan Lemon <[email protected]>,
"David S . Miller" <[email protected]>,
Willem de Bruijn <[email protected]>,
Eric Dumazet <[email protected]>,
Hideaki YOSHIFUJI <[email protected]>,
David Ahern <[email protected]>, Jens Axboe <[email protected]>
Subject: Re: [RFC 00/12] io_uring zerocopy send
Date: Wed, 1 Dec 2021 20:42:43 +0000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 12/1/21 17:57, David Ahern wrote:
> On 12/1/21 8:32 AM, Pavel Begunkov wrote:
[...]
>>> mileage varies quite a bit.
>>
>> Interesting, any brief notes on the setup and the results? Dummy
>
> VM on Chromebook. I just cloned your repos, built, install and test. As
> mentioned above, the skb_orphan_frags_rx change is missing from your
> repo and that is the key to your reported performance gains.
Just to clear misunderstandings if any, all the numbers in the
cover-letter were measured on the same kernel and during the same
boot, and it doesn't include the skb_orphan_frags_rx() change.
All double checked by looking at the traces.
When it's routed through the loopback paths (e.g. -D 127.0.0.1),
it's indeed slow for both msg_zerocopy and send-zc, and both
"benefit" in raw throughput from the hack.
--
Pavel Begunkov
next prev parent reply other threads:[~2021-12-01 20:45 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 15:18 [RFC 00/12] io_uring zerocopy send Pavel Begunkov
2021-11-30 15:18 ` [RFC 01/12] skbuff: add SKBFL_DONT_ORPHAN flag Pavel Begunkov
2021-11-30 15:18 ` [RFC 02/12] skbuff: pass a struct ubuf_info in msghdr Pavel Begunkov
2021-11-30 15:18 ` [RFC 03/12] net/udp: add support msgdr::msg_ubuf Pavel Begunkov
2021-11-30 15:18 ` [RFC 04/12] net: add zerocopy_sg_from_iter for bvec Pavel Begunkov
2021-11-30 15:18 ` [RFC 05/12] net: optimise page get/free for bvec zc Pavel Begunkov
2021-12-01 19:20 ` Jonathan Lemon
2021-12-01 20:17 ` Pavel Begunkov
2021-11-30 15:18 ` [RFC 06/12] io_uring: add send notifiers registration Pavel Begunkov
2021-11-30 15:18 ` [RFC 07/12] io_uring: infrastructure for send zc notifications Pavel Begunkov
2021-11-30 15:18 ` [RFC 08/12] io_uring: wire send zc request type Pavel Begunkov
2021-11-30 15:18 ` [RFC 09/12] io_uring: add an option to flush zc notifications Pavel Begunkov
2021-11-30 15:18 ` [RFC 10/12] io_uring: opcode independent fixed buf import Pavel Begunkov
2021-11-30 15:18 ` [RFC 11/12] io_uring: sendzc with fixed buffers Pavel Begunkov
2021-11-30 15:19 ` [RFC 12/12] io_uring: cache struct ubuf_info Pavel Begunkov
2021-12-01 3:10 ` [RFC 00/12] io_uring zerocopy send David Ahern
2021-12-01 15:32 ` Pavel Begunkov
2021-12-01 17:57 ` David Ahern
[not found] ` <[email protected]>
2021-12-01 19:20 ` David Ahern
2021-12-01 20:15 ` Pavel Begunkov
2021-12-01 21:51 ` Martin KaFai Lau
2021-12-01 22:35 ` David Ahern
2021-12-01 23:07 ` Martin KaFai Lau
2021-12-01 23:18 ` Pavel Begunkov
2021-12-02 15:48 ` Pavel Begunkov
2021-12-02 17:40 ` Martin KaFai Lau
2021-12-01 20:42 ` Pavel Begunkov [this message]
2021-12-01 14:31 ` Pavel Begunkov
2021-12-01 17:49 ` David Ahern
2021-12-01 19:59 ` Pavel Begunkov
2021-12-01 18:10 ` Willem de Bruijn
2021-12-01 19:59 ` Pavel Begunkov
2021-12-01 20:29 ` Pavel Begunkov
2021-12-02 0:36 ` Willem de Bruijn
2021-12-02 16:25 ` Pavel Begunkov
2021-12-02 0:32 ` Willem de Bruijn
2021-12-02 16:45 ` Pavel Begunkov
2021-12-02 21:25 ` Willem de Bruijn
2021-12-03 16:19 ` Pavel Begunkov
2021-12-03 16:30 ` Willem de Bruijn
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