Date: Wed, 28 Oct 2020 20:55:25 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 248652] iflib: netmap pkt-gen large TX performance difference between 11-STABLE and 12-STABLE/CURRENT on ix & ixl NIC Message-ID: <bug-248652-7501-IVF1V7DXTo@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-248652-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-248652-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D248652 --- Comment #45 from Vincenzo Maffione <vmaffione@FreeBSD.org> --- (In reply to Sylvain Galliano from comment #43) Ugh. Thanks for reporting. I indeed introduced a subtle typo bug, using callout_reset_sbt() rather than callout_reset_sbt_on() (as intended). Therefore I was passing the "cpu" val= ue to the "flags" argument, resulting in a disaster. In your test this probably triggered the C_DIRECT_EXEC flag of callout(9), so that the timer was being executed in hardware interrupt context. I uploaded the patch that is now consistent with the src tree (that I'm goi= ng to fix right away). --=20 You are receiving this mail because: You are on the CC list for the bug.=
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