Re: Performance problem with 16x audio burns in Linux
/me figures this is pointless, but... On Mar 12, Joerg Schilling wrote: From: Chris Lawrence [EMAIL PROTECTED] On Mar 12, Joerg Schilling wrote: From: Chris Lawrence [EMAIL PROTECTED] j Try increasing the fifo size to 16m or so (-fs=16m). You may also want to see if you can find a firmware upgrade for the CD-R drive. Also running cdrecord at nice --19 (i.e., -19, not +19) or so will help. You have to do that as root, though. YOu can avoid to give wring advice when you read the cdreecord man page before sending mail Hey, it works for me. His (and your) mileage may vary. (He mentioned in his email that DMA was enabled, so clearly your advice was no better...) (And for the record, your man page says to use al least nice --18 on systems that don't have UNIX International compliant realtime scheduling. I haven't read POSIX.4 or this UNIX International spec lately so I can't say if Linux 2.4.1X has it.) Sorry, but this is rubbish! READ THE MAN page.. cdrecord by default runs with much much higher pri than -19. From man cdrecord for version 1.10: ... On SVr4 compliant systems, cdrecord uses the the real time class to get the highest scheduling priority that is pos sible (higher than all kernel processes). On systems with POSIX real time scheduling cdrecord uses real time scheduling too, but may not be able to gain a priority that is higher than all kernel processes. ... nice --18 mkisofs -R /master/tree on systems that don't have UNIX International compliant realtime scheduling. Cdrecord runs at priority 59 on Solaris, you should run mkisofs at no more than priority 58. On other systems, you should run mkisofs at no less than nice --18. ... Now, the man page may have been revised for 1.11aX, but that's what it says on 1.10. Chris -- Chris Lawrence [EMAIL PROTECTED] - http://www.lordsutch.com/chris/ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Performance problem with 16x audio burns in Linux
On Thu, Apr 04, 2002 at 12:17:47PM -0600, Chris Lawrence wrote: /me figures this is pointless, but... Just in case anyone cares, I finally got around to installing FreeBSD, atapicam patch and all. I don't have the performance problem I have in Linux in FreeBSD. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Performance problem with 16x audio burns in Linux
From: Anssi Saari [EMAIL PROTECTED] I have a performance problem writing audio discs at 16x in Linux. Cdrecord 1.11a17 can just barely keep its fifo filled during the burn, mostly. Data burns are not a problem, 12x audio burns are also not a problem, or it seems I have barely enough horsepower to manage that, but burning from mp3s with on the fly decoding again has performance problems. Same problem happens when burning video-CDs with cdrdao 1.1.5, 12x fine, 16x problems. Top doesn't show any application taking very much CPU. So you did not enable DMA. You cannot write faster then 12x without DMA. Jörg EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin [EMAIL PROTECTED] (uni) If you don't have iso-8859-1 [EMAIL PROTECTED] (work) chars I am Jorg Schilling URL: http://www.fokus.gmd.de/usr/schilling ftp://ftp.fokus.gmd.de/pub/unix FOKUS at CeBIT Hall 11, A14 - BerliOS at CeBIT Hall 11 D11 (Future Market) Meet me at CeBIT in Hall 11 D11 on the BerliOS booth - www.berlios.de -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Performance problem with 16x audio burns in Linux
From: Chris Lawrence [EMAIL PROTECTED] j Try increasing the fifo size to 16m or so (-fs=16m). You may also want to see if you can find a firmware upgrade for the CD-R drive. Also running cdrecord at nice --19 (i.e., -19, not +19) or so will help. You have to do that as root, though. YOu can avoid to give wring advice when you read the cdreecord man page before sending mail Jörg EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin [EMAIL PROTECTED] (uni) If you don't have iso-8859-1 [EMAIL PROTECTED] (work) chars I am Jorg Schilling URL: http://www.fokus.gmd.de/usr/schilling ftp://ftp.fokus.gmd.de/pub/unix FOKUS at CeBIT Hall 11, A14 - BerliOS at CeBIT Hall 11 D11 (Future Market) Meet me at CeBIT in Hall 11 D11 on the BerliOS booth - www.berlios.de -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Performance problem with 16x audio burns in Linux
On Mar 12, Joerg Schilling wrote: From: Chris Lawrence [EMAIL PROTECTED] j Try increasing the fifo size to 16m or so (-fs=16m). You may also want to see if you can find a firmware upgrade for the CD-R drive. Also running cdrecord at nice --19 (i.e., -19, not +19) or so will help. You have to do that as root, though. YOu can avoid to give wring advice when you read the cdreecord man page before sending mail Hey, it works for me. His (and your) mileage may vary. (He mentioned in his email that DMA was enabled, so clearly your advice was no better...) (And for the record, your man page says to use al least nice --18 on systems that don't have UNIX International compliant realtime scheduling. I haven't read POSIX.4 or this UNIX International spec lately so I can't say if Linux 2.4.1X has it.) Oh, I did typo the fs argument, as there's no dash. Mea maxima culpa. Chris -- Chris Lawrence [EMAIL PROTECTED] - http://www.lordsutch.com/chris/ -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: Performance problem with 16x audio burns in Linux
From: Chris Lawrence [EMAIL PROTECTED] On Mar 12, Joerg Schilling wrote: From: Chris Lawrence [EMAIL PROTECTED] j Try increasing the fifo size to 16m or so (-fs=16m). You may also want to see if you can find a firmware upgrade for the CD-R drive. Also running cdrecord at nice --19 (i.e., -19, not +19) or so will help. You have to do that as root, though. YOu can avoid to give wring advice when you read the cdreecord man page before sending mail Hey, it works for me. His (and your) mileage may vary. (He mentioned in his email that DMA was enabled, so clearly your advice was no better...) (And for the record, your man page says to use al least nice --18 on systems that don't have UNIX International compliant realtime scheduling. I haven't read POSIX.4 or this UNIX International spec lately so I can't say if Linux 2.4.1X has it.) Sorry, but this is rubbish! READ THE MAN page.. cdrecord by default runs with much much higher pri than -19. Jörg EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin [EMAIL PROTECTED] (uni) If you don't have iso-8859-1 [EMAIL PROTECTED] (work) chars I am Jorg Schilling URL: http://www.fokus.gmd.de/usr/schilling ftp://ftp.fokus.gmd.de/pub/unix FOKUS at CeBIT Hall 11, A14 - BerliOS at CeBIT Hall 11 D11 (Future Market) Meet me at CeBIT in Hall 11 D11 on the BerliOS booth - www.berlios.de -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
