Date: Sat, 16 Mar 2024 19:06:18 +0000 From: Nuno Teixeira <eduardo@freebsd.org> To: tuexen@freebsd.org Cc: garyj@gmx.de, current@freebsd.org, net@freebsd.org Subject: Re: Request for Testing: TCP RACK Message-ID: <CAFDf7ULtN9owoH-ns2OfR6ZhypNGxuNzkQbb2P9zR8ceFgaj5A@mail.gmail.com> In-Reply-To: <BB57B7CC-1506-4B4C-8A04-26F67DE30EDA@freebsd.org> References: <42C327BD-6CE4-43AA-A1AE-3BEC08D623DB@freebsd.org> <CAFDf7U%2BU3QpgsG-hY0u3tC_X9WKSRzuAM7Nfhzu-%2BqPBbs1nng@mail.gmail.com> <486915F0-456B-4B09-A8BC-93BBA79C4CA1@freebsd.org> <20240313080624.6c73908c@ernst.home> <508E3B47-8E1B-469F-97B1-2171A3098888@freebsd.org> <86a5n1i0xg.fsf@ltc.des.dev> <AE656D0C-FA5B-4194-8B57-4140CD57ABF1@freebsd.org> <CAFDf7UJRitdHz5QebNH9A4mNo0pKCBRfZCfmFgjNVSdCr_JXrw@mail.gmail.com> <78D1FF09-71A3-4486-B934-D8332F54B237@freebsd.org> <20240316104053.20bef8c2@ernst.home> <CAFDf7UKT=FYsaXRacwsnjDkYUjT4_1QnHynWAc67yxQS8XA0Yw@mail.gmail.com> <20240316115128.33d11f7b@ernst.home> <CAFDf7U%2BBgyw2e1hJySt-4GTX3=qn6LX7B2Ebzcmvr%2BD6MJqfpg@mail.gmail.com> <7367F29A-D52B-4828-B79A-AA2667E81E7D@freebsd.org> <CAFDf7UKRLpBt%2B11GmWO5p0b-L9ZMve6MyCxRUuVm32EBZY0MWA@mail.gmail.com> <BB57B7CC-1506-4B4C-8A04-26F67DE30EDA@freebsd.org>
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> > Will update amd64 laptop to main-n268827-75464941dc17 (Mar 16) and test it.
> Please do so...
@main-n268827-75464941dc17 GENERIC-NODEBUG amd64
Ok, I think I have here some numbers related to disk performance being
affected by tcp_rack that somehow is messing with something.
NOTES:
- test [1] was done after a boot without tcp_rack in loader.conf and
[2] tcp_rack was loaded manually with kldload (without rebooting)
- After unloading tcp_rack, same results as [2]
- Cannot unload tcptpts: device busy
[1] without tcp_rack loaded:
==> poudriere testport net/gitup:
11.16s real 5.35s user 6.35s sys
==> bonnie++:
Version 1.98 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Name:Size etc /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
leg.home 32G 25k 99 105m 99 88.7m 99 77k 99 198m 99 12716 1784
Latency 351ms 1793us 2340us 241ms 638us 2514us
Version 1.98 ------Sequential Create------ --------Random Create--------
leg.home -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 14908.273230 97 +++++ +++ 6878.516657 99
15194.808063 97 +++++ +++ 8019.731670 99
Latency 1108us 182us 2228us 1013us 152us 2424us
[2] kldload tcp_rack:
==> poudriere testport net/gitup:
1m0.54s real 4.98s user 1m31.38s sys
==> bonnie++:
Version 1.98 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Name:Size etc /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
leg.home 32G 14k 99 78.0m 99 46.6m 99 25k 99 120m 99 6688 2161
Latency 676ms 18309us 76171us 385ms 924us 2274us
Version 1.98 ------Sequential Create------ --------Random Create--------
leg.home -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 8139.513260 96 19437.792294 99 5494.638508 99
8099.275425 96 19723.528878 99 6363.123671 99
Latency 2982us 338us 3072us 1135us 591us 3236us
Cheers,
--
Nuno Teixeira
FreeBSD Committer (ports)
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