[Bug 256375] iflib/if_em: unplugging network cable causes huge KTorrent slowdown

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 04 Jun 2021 14:22:50 +0000
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256375

--- Comment #11 from Alexey Dokuchaev <danfe_at_FreeBSD.org> ---
(In reply to Aleksandr Fedorov from comment #9)
> Alexey, may you perform similar tests with ifmediatst utility?
My results mostly agree with yours, however, they are slightly higher and there
are more outliers:

Active, ports driver
15688292 samples, 0.000440~52.404189, mean 0.000695, stdev 0.035022

Unplugged, ports driver
699 samples, 50.136990~351.355143, mean 67.735449, stdev 39.253407

Active, removed iflib_admin_intr_deferred()
117707 samples, 0.046730~160.303206, mean 0.098550, stdev 1.004555

Unplugged, removed iflib_admin_intr_deferred()
169 samples, 52.865603~497.009039, mean 75.350125, stdev 52.074932

Active, unpatched
40666 samples, 0.046684~185.143686, mean 0.170622, stdev 1.997476

Unplugged, unpatched
61 samples, 54.975691~439.951595, mean 135.355143, stdev 66.179309

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Received on Fri Jun 04 2021 - 14:22:50 UTC

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