Date: Thu, 24 Jun 2004 21:37:41 +0800 (CST) From: Tai-hwa Liang <avatar@mmlab.cse.yzu.edu.tw> To: freebsd-current@freebsd.org Subject: Re: if_em locked up under high network load in -CURRENT Message-ID: <04062421294311.64480@www.mmlab.cse.yzu.edu.tw> In-Reply-To: <040607172005C.88581@www.mmlab.cse.yzu.edu.tw> References: <040607172005C.88581@www.mmlab.cse.yzu.edu.tw>
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It looks like that my T40 no longer get into such lockup in recent -CURRENT (cvsup'ed on Jun-19-2004). Thanks for the great work! On Mon, 7 Jun 2004, Tai-hwa Liang wrote: > Greetings, > > It seems that recent kernel changes breaks the em driver when the network > load is high enough(rsync a directory contains +150MB files). The onboard > Intel PRO/1000 just doesn't respond to network request such like ping or DHCP > lease renewal -- all interrupt related to em0 was stopped since the lockup > took place. However, the system is still workable(can compile/edit code, only > em0 hangs) at this moment. Manually unload/reload the if_em kernel module > doesn't solve this problem. > > Last known good kernel was cvsup'ed on Apr-28-2004, the problem occurred > since May-09-2004(cvsup/kernel build on a weekly basis, not sure about > whether it worked between Apr-28 and May-09 or not). > > Since booting w/o ACPI support solved this problem, I'm wondering > about whether recent PCI/ACPI changes correlated to this lockup. > The module was built without polling support; however, the lockup always > happens disregarding device polling support is compiled in or not. > > ---------------------- vmstat -i ---------------------------- > interrupt total rate > irq0: clk 93968 99 > irq1: atkbd0 4227 4 > irq4: cbb0 em0++ 166447 176 > irq6: cbb1 pcm0 133702 41 > irq7: ppc0 1 0 > irq8: rtc 120281 127 > irq9: acpi0 301 0 > irq10: uhci1 200 0 > irq11: ath0 uhci2+ 2 0 > irq12: psm0 21 0 > irq13: npx0 1 0 > irq14: ata0 7425 7 > irq15: ata1 55 0 > Total 392929 417 [...]
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