Date: Wed, 10 Jun 2015 09:38:19 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Yanhui Shen <shen.elf@gmail.com> Cc: Henry Hu <henry.hu.sh@gmail.com>, FreeBSD Stable Mailing List <freebsd-stable@freebsd.org> Subject: Re: High Interrupt rate since r279961 on STABLE/10 branch Message-ID: <CAJ-Vmo=%2B%2BSJpvbSP6PJhS0LCj6kbcdJa=Do_4yO-sUDe_B8tww@mail.gmail.com> In-Reply-To: <CAEEM4vmsVQDiRoiiknz=4hH5b6Pyq94faC6FeAR%2B1WxyapGc-w@mail.gmail.com> References: <CAEEM4vmsVQDiRoiiknz=4hH5b6Pyq94faC6FeAR%2B1WxyapGc-w@mail.gmail.com>
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Hi, There was an update to freebsd-head a few days ago from hans - it disabled PCI interrupts for VGA until a driver claims it. See if that helps? -a b On 10 June 2015 at 05:33, Yanhui Shen <shen.elf@gmail.com> wrote: > Hi, > > I noticed the interrupt rate of my FreeBSD system is very high (~35%) after > upgrade from r279138 to r284205. > > To find out which revision cause this problem, > I used a binary search manner and compiled the kernel 11 times. > Finally I located to r279961, the interruption rate is abnormal since this > revision. > > Do you have any idea about this issue? > > ( I'm temporarily using r279958 kernel with r284205 base system, everything > is fine.) > > -------------------------------- > > Device: ThinkPad R400 (Product ID: 278225C) > CPU: Intel Core 2 Duo processor T6570 (2.1 GHz) > GPU: Intel Integrated Graphics 4500MHD > > Output of "vmstat -i" with r284205 kernel (abnormal): > interrupt total rate > irq1: atkbd0 1607 1 > irq9: acpi0 131958 104 > irq12: psm0 4281 3 > irq16: uhci3 239899376 189643 > irq20: hpet0 uhci0 1426118 1127 > irq21: uhci1 40315 31 > irq23: ehci0 33 0 > irq256: vgapci0 6059 4 > irq257: em0 49220 38 > irq258: hdac0 62 0 > irq260: ahci0:ch0 17217 13 > irq261: ahci0:ch1 23 0 > Total 241576269 190969 > > Output of "vmstat -i" with r279958 kernel (normal): > interrupt total rate > irq1: atkbd0 48155 3 > irq9: acpi0 1581468 105 > irq12: psm0 209484 13 > irq19: ehci1 48099 3 > irq20: hpet0 uhci0 17385585 1156 > irq21: uhci1 680884 45 > irq23: ehci0 31 0 > irq256: vgapci0 2611430 173 > irq257: em0 1342009 89 > irq258: hdac0 602220 40 > irq260: ahci0:ch0 236313 15 > irq261: ahci0:ch1 27 0 > Total 24745705 1646 > > The revision: > https://svnweb.freebsd.org/base?view=revision&revision=279961 > > -------------------------------- > > Best regards, > Yanhui Shen > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
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