On 07/02/2011, at 21:07, Ivan Voras wrote: >>> I'm also interested in raw device vs file system access! >> >> Oops, sorry.. I just tried that now but it doesn't improve things :( > > Meaning: you still get jitter?
Yes, well I didn't measure the read frequency but it dropped out (stopped streaming due to a full FIFO) no less often. >> I am writing directly to /dev/ad10 but stressing /dev/ad14 (sudo tar -cf >> /dev/null /local0) > > Can you do only one of those things? I.e. leave all the file systems > alone and just do something like 'diskinfo -vt /dev/ad14'? OK, I wrote the data to /dev/null from USB and ran diskutil in a loop and it doesn't drop out. -- 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 GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
