Date: Thu, 29 Oct 1998 14:52:08 +1030 (CST) From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: "Kenneth D. Merry" <ken@plutotech.com> Cc: freebsd-scsi@FreeBSD.ORG, pechter@shell.monmouth.com Subject: Re: ielem in chio Message-ID: <XFMail.981029145208.doconnor@gsoft.com.au> In-Reply-To: <199810290404.VAA06152@panzer.plutotech.com>
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On 29-Oct-98 Kenneth D. Merry wrote: > > Wohoo.. Any fixes for the shared memory problems coming up by chance? :) > Well, at least on -current, I've been able to fix the problem by limiting > the number of sectors that cdda2wav reads. (25 blocks seems to work well) OK.. I didn't know the problem was also present in -current tho.. > It looks like there's some sort of corruption problem when the transfer > sizes through the passthrough driver are between 64K and 128K. (My guess > is some sort of VM problem.) Yeah, I was wondering if anyone had any information about the underlying problem :) > I'm curious to see whether that (limiting the number of sectors read at a > time) will fix the problems you've been having under -stable with cdda2wav. Hmm, I'll have to wait until we get some more machines before I can test :) Also I think the problem occurs in some circumstances while writing a CD (cdrecord uses shared memory to hold its ring buffer). I'm not sure about this tho since it happens less often. --------------------------------------------------------------------- |Daniel O'Connor software and network engineer for Genesis Software | |http://www.gsoft.com.au | |The nice thing about standards is that there are so many of them to| |choose from. -- Andrew Tanenbaum | --------------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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