Date: Sun, 06 Dec 2009 14:27:20 +0900 (JST) From: Hiroki Sato <hrs@FreeBSD.org> To: john@jnielsen.net Cc: stable@FreeBSD.org, jfvogel@gmail.com Subject: Re: em interface slow down on 8.0R Message-ID: <20091206.142720.79407994.hrs@allbsd.org> In-Reply-To: <1E3C66EA-A6D3-44D7-B28E-BF068FFF16A6@jnielsen.net> References: <20091203.182931.129751456.hrs@allbsd.org> <20091205.184017.30030575.hrs@allbsd.org> <1E3C66EA-A6D3-44D7-B28E-BF068FFF16A6@jnielsen.net>
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----Security_Multipart(Sun_Dec__6_14_27_20_2009_900)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit John Nielsen <john@jnielsen.net> wrote in <1E3C66EA-A6D3-44D7-B28E-BF068FFF16A6@jnielsen.net>: jo> On Dec 5, 2009, at 4:40 AM, Hiroki Sato <hrs@freebsd.org> wrote: jo> jo> > Hiroki Sato <hrs@freebsd.org> wrote jo> > in <20091203.182931.129751456.hrs@allbsd.org>: jo> > jo> > hr> And another thing, I noticed a box with 82573E and 82573L jo> > sometimes jo> > hr> got stuck after upgrading to 8.0-STABLE. It has moderate network jo> > hr> load (average 5-10Mbps) on both NICs. It worked for a day or two jo> > and jo> > hr> then got stuck suddenly. Rebooting the box solved the situation, jo> > but jo> > hr> it got stuck again after a day or so. After it happens, the jo> > hr> interface does not respond. The other functionalities of FreeBSD jo> > hr> seemed working. Doing an up/down cycle for the NICs seemed to jo> > send jo> > hr> some packets, but it did not recover completely; rebooting was jo> > needed jo> > hr> for recovery. This box does not have the RTT problem. I am still jo> > hr> not sure what is the trigger, there seems something wrong. jo> > jo> > Things turned out for this symptom so far are: jo> > jo> > - This occurs around once per 1-2 days. jo> > jo> > - Once it occurs, all of communications including ARP and IPv4 stop. jo> > jo> > - "ifconfig em0 down/up" can recover the interface. However, on doing jo> > "up" after "down" the following message was displayed: jo> > jo> > # ifconfig em0 up jo> > em0: Could not setup receive structures jo> > jo> > After trying it several times it worked. jo> > jo> > Then, the interface seemed back to normal for a couple of minutes, jo> > but it stopped again. jo> > jo> > I guess there is a kind of deadlock somewhere but not sure it is jo> > really related to the em(4) driver. I will continue to investigate jo> > anyway. jo> jo> I'm curious, what speed/duplex is your interface using and is it jo> statically set or using autoselect? No manual configuration. Two em's are set as the following: | media: Ethernet autoselect (1000baseT <full-duplex>) It is mainly used for NFS server. The actual communication speed was around 700Mbps at peak. -- Hiroki ----Security_Multipart(Sun_Dec__6_14_27_20_2009_900)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEABECAAYFAksbQLgACgkQTyzT2CeTzy1vhgCfRnhijZg6aeNpZxi98KEueA03 y/QAniB/6siRKW2kSkVS//b6RLVkfbLQ =BGA6 -----END PGP SIGNATURE----- ----Security_Multipart(Sun_Dec__6_14_27_20_2009_900)----
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