Date: Sat, 14 Dec 2019 05:33:37 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 166724] [re] if_re watchdog timeout Message-ID: <bug-166724-7501-SsrtljQf1I@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-166724-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-166724-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D166724 Artem Viklenko <artem@viklenko.net> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |artem@viklenko.net --- Comment #41 from Artem Viklenko <artem@viklenko.net> --- My story.. also had this issue. Two my home routers run 11.3-RELEASE-p5 amd64 and have realtek nics like th= is one: re0 pnpinfo vendor=3D0x10ec device=3D0x8168 subvendor=3D0x1458 subdevice=3D0xe000 class=3D0x020000 at slot=3D0 function=3D0 dbsf=3Dpci0:1:= 0:0 handle=3D\_SB_.PCI0.RP01.PXSX Interrupt request lines: 258 pcib1 I/O port window: 0xe000-0xe0ff pcib1 memory window: 0xd0700000-0xd0703fff 0xd0704000-0xd0704fff I switched to Realtek's driver. But still have wtchdog timeouts. After some Googling I found duscussion about issues with jumbo buffers. After cheking = this idea I found confirmation - after some time (depending on traffic rate/amou= nt) memory became fragmented and requests to 9k buffers fails. Now I use 1.95 driver from vendor but with very-very dirty hack. I've repla= ced Jumbo_Frame_9k with value 3072. So now re driver use only 4k buffers. I'm ok with MTU of 1500 (this change limits max MTU). But now it is stable = and no watchdog timeouts. And no more failures on buffers: artem@gate$ vmstat -z | grep buf mbuf_packet: 256, 2362080, 2, 1265, 9732282, 0, 0 mbuf: 256, 2362080, 514, 1789,17068586803, 0, 0 mbuf_cluster: 2048, 369076, 1267, 21, 531078, 0, 0 mbuf_jumbo_page: 4096, 184537, 513, 263,7618134369, 0, 0 mbuf_jumbo_9k: 9216, 54677, 0, 0, 0, 0, 0 mbuf_jumbo_16k: 16384, 30756, 0, 0, 0, 0, 0 I know it is stupid trick but at least it works. :) Hope it can help. --=20 You are receiving this mail because: You are on the CC list for the bug.=
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