Date: Wed, 13 Mar 2013 11:00:01 GMT From: Hans Petter Selasky <hps@bitfrost.no> To: freebsd-usb@FreeBSD.org Subject: Re: usb/176913: High interrupt load with ehci Message-ID: <201303131100.r2DB01mM038593@freefall.freebsd.org>
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The following reply was made to PR usb/176913; it has been noted by GNATS. From: Hans Petter Selasky <hps@bitfrost.no> To: Christian Jurk <commx@commx.ws> Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: usb/176913: High interrupt load with ehci Date: Wed, 13 Mar 2013 12:00:23 +0100 On 03/13/13 11:21, Christian Jurk wrote: > >> Number: 176913 >> Category: usb >> Synopsis: High interrupt load with ehci >> Confidential: no >> Severity: non-critical >> Priority: low >> Responsible: freebsd-usb >> State: open >> Quarter: >> Keywords: >> Date-Required: >> Class: sw-bug >> Submitter-Id: current-users >> Arrival-Date: Wed Mar 13 10:30:01 UTC 2013 >> Closed-Date: >> Last-Modified: >> Originator: Christian Jurk >> Release: 9.1 >> Organization: >> Environment: > FreeBSD nodame 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 >> Description: > The machine is having constantly high interrupt load. > > # vmstat -i > cjurk@nodame:~% vmstat -i > interrupt total rate > irq16: ehci0 6264477215 85601 > irq18: xhci0 32405333 442 > irq23: ehci1 4689051 64 > cpu0:timer 29846776 407 > irq264: hdac0 62 0 > irq265: re0 93526302 1277 > irq267: ahci0 737621 10 > cpu1:timer 55424818 757 > Total 6481107178 88561 > > # dmesg | grep ehci > ehci0: <EHCI (generic) USB 2.0 controller> mem 0xf7e08000-0xf7e083ff irq 16 at device 26.0 on pci0 > usbus0 on ehci0 > ehci1: <EHCI (generic) USB 2.0 controller> mem 0xf7e07000-0xf7e073ff irq 23 at device 29.0 on pci0 > usbus2 on ehci1 > > # top -S > last pid: 75321; load averages: 0.17, 0.25, 0.24 up 0+20:22:38 11:20:28 > 70 processes: 2 running, 67 sleeping, 1 waiting > CPU: 0.0% user, 0.0% nice, 0.0% system, 27.4% interrupt, 72.6% idle > Mem: 46M Active, 792M Inact, 2863M Wired, 34M Cache, 408M Buf, 113M Free > Swap: 4096M Total, 7364K Used, 4089M Free > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 11 root 2 155 ki31 0K 32K RUN 1 31.2H 150.29% idle > 12 root 16 -84 - 0K 256K WAIT 0 200:06 50.49% intr > 0 root 156 -8 0 0K 2496K - 1 149:25 0.00% kernel > 15 root 13 -68 - 0K 208K - 0 7:22 0.00% usb > 21961 root 4 -8 - 0K 80K tx->tx 0 2:27 0.00% zfskern > 80209 cjurk 1 20 0 16560K 1328K select 0 1:22 0.00% top > 9 root 1 16 - 0K 16K syncer 1 1:12 0.00% syncer > 13 root 3 -8 - 0K 48K - 0 0:55 0.00% geom > 14 root 1 -16 - 0K 16K - 1 0:42 0.00% yarrow > 22333 root 1 20 0 40724K 1044K nanslp 0 0:16 0.00% nmbd > 1157 root 1 20 0 12052K 532K select 0 0:16 0.00% powerd > 29397 cjurk 1 20 0 22928K 1600K select 0 0:11 0.00% screen > 1154 root 1 20 0 22196K 1268K select 1 0:08 0.00% ntpd > 19 root 1 -16 - 0K 16K sdflus 1 0:06 0.00% softdepflu > 5 root 1 -16 - 0K 16K psleep 1 0:05 0.00% pagedaemon > 16 root 1 -16 - 0K 16K tzpoll 1 0:04 0.00% acpi_therm > 1181 root 1 20 0 20252K 2148K select 1 0:03 0.00% sendmail > > The only device connected to USB is a external hard disk, which is used as storage disk (ZFS). >> How-To-Repeat: > >> Fix: > > >> Release-Note: >> Audit-Trail: >> Unformatted: Hi, If you boot a custom kernel without device ehci, is the problem still the same? I suspect it is not an USB issue. --HPS
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