Date: Tue, 13 Oct 2020 21:14:32 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 248652] netmap: pkt-gen TX huge pps difference between 11-STABLE and 12-STABLE/CURRENT on ix & ixl NIC Message-ID: <bug-248652-7501-aTevFLe23L@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 Vincenzo Maffione <vmaffione@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|net@FreeBSD.org |vmaffione@FreeBSD.org --- Comment #14 from Vincenzo Maffione <vmaffione@FreeBSD.org> --- Created attachment 218723 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D218723&action= =3Dedit Draft patch to test the netmap tx timer This is a draft patch that adds support for a per-tx-queue timer dedicated = to netmap. The timer interval is still not adaptive, but controlled by a per-interface sysctl, e.g.: sysctl dev.ix.0.iflib.nm_tx_tmr_us=3D500 It would be useful to test pkt-gen transmission on ixl/ix NICs, playing on = the tunable to hopefully see the pps increase. Values too large should cause the pps to drop. Values too short should cause the CPU utilization to go up (and possibly the pps to drop a little bit). Can anyone test this? --=20 You are receiving this mail because: You are on the CC list for the bug. You are the assignee for the bug.=
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