The following reply was made to PR kern/104624; it has been noted by GNATS.
From: Alexander Best <[email protected]> To: [email protected] Cc: Subject: Re: kern/104624: Sound, mouse and keyboard badly interrupted while I/O (disk, net) Date: Sun, 12 Dec 2010 11:03:05 +0000 hi jaakko, i can confirm that a similar issue exists for me running a very recent HEAD snapshot on amd64. when the disk is performing heavy i/o (make -j8 buildworld e.g.) sound starts stuttering and the system goes semi-responsive. mostly the mouse input (usb) is lagging, but sometimes the cursor freezes in it's current position for 10 seconds or so. in addition to that mouse input seems to get corrupted and spontanious mouse clicks get generated. i talked to hps once and he suspected that some mice require a certain polling rate. since under heavy i/o the system seems unable to comply to that polling rate the mouse behavior becomes whacky. i see this behavior both under ULE and 4BSD. this is the output of vmstat -i on my system: interrupt total rate irq16: vgapci0++ 644115 6 irq18: uhci2 ehci0+ 130730 1 irq19: ath0 ahci0+ 24562200 259 irq20: hpet0 85278624 900 irq21: uhci1 2478835 26 irq256: ahci1 22677130 239 irq257: hdac0 5554487 58 Total 141326121 1492 this is my soundcard: hd...@pci0:0:27:0: class=0x040300 card=0xa0021458 chip=0x293e8086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801IB/IR/IH (ICH9 Family) HD Audio Controller' class = multimedia subclass = HDA cheers. alex -- a13x _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "[email protected]"
