Date: Fri, 25 Apr 2003 17:42:32 +0900 From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp> To: imp@freebsd.org Cc: firewire@freebsd.org Subject: Re: DV audio/video sync Message-ID: <ybsadefynlz.wl@ett.sat.t.u-tokyo.ac.jp> In-Reply-To: <20030424204403.O18840@volatile.chemikals.org> <20030424164258.X18274@volatile.chemikals.org> References: <ybsist3za0l.wl@ett.sat.t.u-tokyo.ac.jp> <20030424164258.X18274@volatile.chemikals.org> <20030424204403.O18840@volatile.chemikals.org>
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Warner-san, I suppose this problem cames from poor card bus performance. Are there any tuning parameters like latency timer or cache line size of PCI bridge for cardbus bridge? Thanks, /\ Hidetoshi Shimokawa \/ simokawa@sat.t.u-tokyo.ac.jp PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html At Thu, 24 Apr 2003 20:51:55 -0400 (EDT), Wesley Morgan wrote: > > On Fri, 25 Apr 2003, Hidetoshi Shimokawa wrote: > > > Are there any messages in dmesg? > > (IR DMA overflow etc.) > > None that I can see. If I enable the debug.firewire_debug sysctl, the only > message is "start IR DMA 0x0". I do get "x blocks padded" every so often.. > > -- > Hi! I'm a .signature > > ~,. > > virus! Copy me into your ~/.signature to help me spread! > _______________________________________________ > freebsd-firewire@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-firewire > To unsubscribe, send any mail to "freebsd-firewire-unsubscribe@freebsd.org" > At Thu, 24 Apr 2003 16:44:49 -0400 (EDT), Wesley Morgan wrote: > > Well, I've got fwcontrol properly dumping the DV streams, but I have a > lot of trouble with video artifacts, AV sync, and pops/hisses/screeches in > the audio. Is this because it's too much data for a cardbus firewire card > (or maybe my laptop?) to handle, or because the scheduler is causing data > loss? > > -- > Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread! > _______________________________________________ > freebsd-firewire@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-firewire > To unsubscribe, send any mail to "freebsd-firewire-unsubscribe@freebsd.org" >
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