Messages in this thread |  | | Date | Wed, 13 Dec 2000 03:02:06 +0000 (GMT) | | From | Paul Jakma <> | | Subject | via82cxxx_audio - bad latency |
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hi,
i think somethings gone wrong with via82cxxx_audio. Playing anything through it seems to cause massive latency in apps like xmms, esd, asmixer, etc.. anything to do with playing or mixer levels suddenly takes a minute or more to respond.
It didn't always do this, and when it started happening i assumed it was either something bad in esd or xmms (which i tend to upgrade a lot). However it still happens when esd is disabled. eg, i use mpg123 to play an mp3 file, and asmixer doesn't change the volume till a minute or two after i moused it.
if i SIGSTOP mpg123, asmixer immediately becomes responsive again and implements the pending volume change, as soon i SIGCONT mpg123, asmixer becomes very unresponsive again.
same thing with esd, if i STOP mpg123, other apps like esd and non-esd mixers become responsive, soon as i start playing again they go unresponsive.
same thing with playing from esd applications, everything inlcuding the playing app itself (eg xmms) is unresponsive, if i STOP it, the mixers instantly become responsive, soon as i CONT the playing app everything is "dead" again.
kernel is test12-final. AMD K7, Asus K7M board
[root@fogarty /root]# lspci -vv -s 00:04.5 00:04.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 [Apollo Super AC97/Audio] (rev 21) Subsystem: Asustek Computer, Inc.: Unknown device 800d Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin C routed to IRQ 10 Region 0: I/O ports at d400 [size=256] Region 1: I/O ports at d000 [size=4] Region 2: I/O ports at cc00 [size=4] Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
[root@fogarty /root]# cat /proc/interrupts CPU0 0: 1064556 XT-PIC timer 1: 18405 XT-PIC keyboard 2: 0 XT-PIC cascade 3: 904332 XT-PIC eth0 8: 1 XT-PIC rtc 10: 75896 XT-PIC BusLogic BT-958, via82cxxx 12: 278174 XT-PIC PS/2 Mouse 14: 3258 XT-PIC ide0 15: 387918 XT-PIC ide1 NMI: 0 ERR: 0
the via is sharing an interrupt, though normally the buslogic is not being used. (the interrupt sharing has been there a lot longer than this problem)
i don't have the /proc/driver/via.... files that the docs mention.
regards, -- Paul Jakma paul@clubi.ie paul@jakma.org PGP5 key: http://www.clubi.ie/jakma/publickey.txt ------------------------------------------- Fortune: And they shall beat their swords into plowshares, for if you hit a man with a plowshare, he's going to know he's been hit.
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