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=166724 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 this one: re0 pnpinfo vendor=0x10ec device=0x8168 subvendor=0x1458 subdevice=0xe000 class=0x020000 at slot=0 function=0 dbsf=pci0:1:0:0 handle=\_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/amount) 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 replaced 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. -- You are receiving this mail because: You are on the CC list for the bug.help
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