Am Montag, 22. August 2005 22:13 CEST schrieb Sebastian Pahlke: > Hi all, > > I'm trying to "clean" a disc before selling them: > > dd if=/dev/zero of=/dev/da0 > > Do I make something wrong because the transfer rate is only 60932 > bytes/sec??? These are 60 kbytes/sec, slower than my internet > connection!!! > > :( > > I tried to increase the block size, with bs=32768 I get 3416071 > bytes/sec. But this is still very poor. The system is a PIII 800MHz and > a SCSI-3 disc in single user mode booted from FreeBSD release 5.4 > live-cd. > > Any ideas how to analyze this? Thanks in advance!
Hmm, what dows systat (-vm 1) tell you? What's the disk load, maybe you're suffering from interrupt storms? I can't you help much with specific SCSI parts, but maybe you want to try 6.0-BETA3, if I remember correctly there were some adaptec problems fixed... -Harry > > greetings, > > Sebastian Pahlke > > > _______________________________________________ > [email protected] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "[EMAIL PROTECTED]"
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