Date: Sat, 2 Sep 2006 15:26:48 +0200 From: =?utf-8?Q?Daniel_Dvo=C5=99=C3=A1k?= <dandee@hellteam.net> To: "'Sam Leffler'" <sam@errno.com> Cc: freebsd-stable@freebsd.org Subject: RE: atheros driver under high load, panics and even more freezes Message-ID: <000001c6ce93$72a247b0$6508280a@tocnet28.jspoj.czf> In-Reply-To: <44F901B9.3040309@errno.com>
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Ok, I will upgrade my boxes and I will do simple ping tests again. Did you see my sysctl.conf file ? I mean these options: kern.ipc.maxsockbuf=3D2097152 net.inet.ip.fastforwarding=3D1 net.inet.tcp.sendspace=3D65536 Could be this connected with increasing latency up to 500ms ? I tested this issue on another box, box of my friend, you know him too. --- 10.27.128.13 ping statistics --- 10000 packets transmitted, 10000 packets received, 0% packet loss round-trip min/avg/max/stddev =3D 0.932/1.101/9.657/0.433 ms There is nice avg 1,1ms. In his sysctl.conf, there are not these maxsockbuf, fastforwarding and = sendscpace. It is ironic, because it was he, who advised me these values. You wrote me "look at memory usage with vmstat and/or netstat". Ok, bud you did not told me what I should to search for ... And I do not know how the command write with vmstat and netstat, there = are many switches. :) What to find ? Thank you. Daniel > -----Original Message----- > From: Sam Leffler [mailto:sam@errno.com]=20 > Sent: Saturday, September 02, 2006 6:00 AM > To: dandee@volny.cz > Cc: freebsd-stable@freebsd.org; current@freebsd.org > Subject: Re: atheros driver under high load, panics and even=20 > more freezes >=20 > Daniel Dvo=C3=B8=C3=A1k wrote: > > Hi all, > > =20 > > first of all, I=C2=B4m sorry maybe for my bad English. > > =20 > > We have 2 routers which I maintain in our mesh wireless=20 > community network. > > =20 > > The Router 1 has 2 atheros adapters, ath0=3Dwistron cm9, = ath1=3Dwistron=20 > > cm10, of course some sisX, fxpX and so on. > > The Router 2 has 1 atheros adapter, ath1=3Dwistron CM10. > > =20 > > My R1 panics and even more it freezes very often. Maybe the=20 > reason for=20 > > panicing and freezing is the same and maybe not. > > =20 > > I started (only after vmcore.5, so vmcore.6 is with this=20 > option) to=20 > > use "option SW_WATCHDOG" in both my custom kernels on the R1 and R2=20 > > recently in hope, it is some walkaround for freezing at=20 > least if not for panicing. > > =20 > > This router was installed on the 1st of April 2006. > > =20 > > Statistics: > > =20 > > 9 panics with 8 kernel dumps, 1 missed > > =20 > > 10 freezes > > =20 > > I think that all panics some how connected to athX taskq=20 > process, page=20 > > fault in kernel panic and sbflush_locked. >=20 > Why? >=20 > > =20 > > I guess that panic comes when router transmits and receives=20 > datas at=20 > > the maximum throughput for setted nominal media rate speed, exactly=20 > > 24Mbps, more I do not use, because there are problems with quagga > > =20 > > ospfd packets, it is known issue. > > =20 > > Today I did a small test with throughput. > > =20 > > Router 1 executed this command: > > =20 > > # ping -i 0.001 -c 100000 -s 1472 ANY IP > > =20 > > As you see, it is not even flood ping, it is almost flood,=20 > but not flood. > > =20 > > Throughput was about 1,13-1,2 MB/s as bmon showed me. I=20 > notice there=20 > > is not any qos and icmp.limit is so high net.inet.icmp.icmplim:=20 > > 2147483647 > > net.ineticmp.icmplim_output: 0. > >=20 > > =20 > > First 5 s latency was about 1,1-1,7 ms After it goes to=20 > 10-30, 50-70,=20 > > 110-130, 270-300, up 300ms and packet loss > > =20 > > .... some seconds .... > > =20 > > panic >=20 > <...lots of stuff deleted...> >=20 > Sounds like a resource leak to me. You've got crash dumps,=20 > look at memory usage with vmstat and/or netstat. Past that=20 > it sounds like you're running 6.1 RELEASE which is now 6+=20 > months old. Many bugs have been fixed including, I believe,=20 > some resource-related ones. Please try 6-STABLE. >=20 > Sam >=20 >=20
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