Date: Thu, 23 Feb 2012 21:38:53 +0100 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-hackers@freebsd.org Cc: Vijay Singh <vijju.singh@gmail.com> Subject: Re: USB issue on 8.2 Message-ID: <201202232138.53830.hselasky@c2i.net> In-Reply-To: <CALCNsJRP7jEuF3_9ptUeCB-2znX2N9MnxfEe8C-sQnJ2cD2q8A@mail.gmail.com> References: <CALCNsJRP7jEuF3_9ptUeCB-2znX2N9MnxfEe8C-sQnJ2cD2q8A@mail.gmail.com>
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On Thursday 23 February 2012 18:52:50 Vijay Singh wrote:
> Hi hackers. I am seeing an issue where the USB controller is
> generating a large number of interrupts.
>
> last pid: 6639; load averages: 1.39, 1.48, 2.46 up 0+01:07:14
> 12:35:05 2590 processes:9 running, 462 sleeping, 3 zombie, 2116 waiting
> CPU: 0.2% user, 0.0% nice, 11.5% system, 10.6% interrupt, 77.7% idle
> Mem: 277M Active, 425M Inact, 241M Wired, 2704K Cache, 7488K Buf, 1017M
> Free Swap: 1024M Total, 1024M Free
>
> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
> 10 root 171 ki31 0K 64K RUN 3 34:37 89.40% {idle: cpu3}
> 10 root 171 ki31 0K 64K CPU2 2 33:56 85.94% {idle: cpu2}
> 10 root 171 ki31 0K 64K CPU0 0 37:20 76.27% {idle: cpu0}
> 10 root 171 ki31 0K 64K RUN 1 25:09 55.27% {idle: cpu1}
> 11 root -64 - 0K 480K WAIT 1 14:40 33.40% {irq16:
> ehci1}
>
> interrupt total rate
> irq16: ehci1 488177801 114166
>
> Is this known? Any patches I can test?
Hi,
There are some knobs under:
sysctl hw.usb.ehci
Which you can set to one in /boot/loader.conf
hw.usb.ehci.lostintrbug: 0
hw.usb.ehci.iaadbug: 0
--HPS
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