Date: Sun, 25 Oct 2020 15:38:52 +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-LWj2b9JAJE@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 #36 from Vincenzo Maffione <vmaffione@FreeBSD.org> --- (In reply to Vincenzo Maffione from comment #35) I would ask for advice from the Intel guys here... I'm trying to compare stable/11 vs current, regarding how TX interrupts are handled. It looks like in stable/11 MSI-x handlers are shared for the TX an= d RX queue, while in current TX interrupts are not used. Also, in stable/11 the interrupt handler seems to do a disable_queue and th= en enable_queue, while on current I only see the enable_queue step (IFDI_TX_QUEUE_INTR_ENABLE). Therefore, in the last patch I also add the enable_queue step in the netmap timer routine. It may be worth giving a try to see if this fixes the ixl is= sue. --=20 You are receiving this mail because: You are on the CC list for the bug.=
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