Date: Tue, 14 Jun 2011 09:07:33 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: Charles Sprickman <spork@bway.net> Cc: freebsd-usb@freebsd.org Subject: Re: ucom/uftdi high interrupt load Message-ID: <201106140907.33612.hselasky@c2i.net> In-Reply-To: <alpine.OSX.2.00.1106132045330.12822@freemac> References: <alpine.OSX.2.00.1106111715580.99056@hotlap.nat.fasttrackmonkey.com> <201106131108.42959.hselasky@c2i.net> <alpine.OSX.2.00.1106132045330.12822@freemac>
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On Tuesday 14 June 2011 02:58:44 Charles Sprickman wrote: > On Mon, 13 Jun 2011, Hans Petter Selasky wrote: > > On Sunday 12 June 2011 23:50:24 Charles Sprickman wrote: > >> On Sun, 12 Jun 2011, Hans Petter Selasky wrote: > >>> On Saturday 11 June 2011 23:43:11 Charles Sprickman wrote: > > > > Ok, then those quirks won't help. > > > > For OHCI, I guess you should check vmstat -i. > > Oddly enough, the box paniced today, but it appeared to be related to fxp. > However in the coredump summary, I have "vmstat -i" output, and ohci seems > fairly high in comparison to everything else: > > vmstat -i > > interrupt total rate > irq4: uart0 106 0 > irq10: ohci0 142322001 968176 > irq14: ata0 1178 8 > irq20: fxp0 3008691 20467 > irq21: fxp1 1733357 11791 > irq28: sym1 30 0 > irq29: sym0 2624749 17855 > cpu0: timer 728063100 4952810 > cpu1: timer 728044684 4952684 > Total 1605797896 10923795 > > Also, just a brief summary of the panic, since it mentions the interrupt > process again: Hi, The OHCI IRQ rate is too high. It should never exceed 1000 IRQ/s. Maybe you can build a kernel with "options USB_DEBUG", then run the following command and post some of the resulting dmesg: sysctl hw.usb.ohci.debug=16 ; sleep 1; sysctl hw.usb.ohci.debug=0 --HPS > > #7 0x8059139b in fxp_new_rfabuf (sc=0x8564c000, rxp=0x8564c1c0) > at /usr/src/sys/dev/fxp/if_fxp.c:2611 > #8 0x8059285b in fxp_intr (xsc=0x8564c000) > at /usr/src/sys/dev/fxp/if_fxp.c:1931 > #9 0x8067b1db in intr_event_execute_handlers (p=0x8553d7f8, > ie=0x8557d080) > at /usr/src/sys/kern/kern_intr.c:1220 > #10 0x8067c8eb in ithread_loop (arg=0x856525d0) > at /usr/src/sys/kern/kern_intr.c:1233 > #11 0x80678f11 in fork_exit (callout=0x8067c880 <ithread_loop>, > arg=0x856525d0, frame=0xd80e7d38) at /usr/src/sys/kern/kern_fork.c:844 > #12 0x80931de0 in fork_trampoline () at > /usr/src/sys/i386/i386/exception.s:270 > > And also unrelated to usb, but fairly bizarre "netstat -m" output: > > 18446744073709550887/1355/626/25600 mbuf clusters in use > (current/cache/total/max) > 18014398509480560K/3497K/2073K bytes allocated to network > (current/cache/total) > > Sorry for all the extra noise, but I'm not adept enough at determining > whether this panic was usb related or fxp related. > > Thanks, > > Charles > > > --HPShelp
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