Re: cpio and tar are loosing flags (and a panic message without trace)

2005-08-26 Thread Matthew Dillon
:Thank you, I know cpdup but I haven't known that it's flags aware! :Unfortunately I need to write to a raw device, I guess there's no way for=20 :cpdup without a filesystem... : :I guess cpio and tar really should take care about flags. Am I wrong? : :Thanks, : :=2DHarry cpio won't do it, tar

Re: cpio and tar are loosing flags (and a panic message without trace)

2005-08-26 Thread Matthew Dillon
:Hello, : :hmm, once again me. And again with a probably not so common problem. :I need to replicate files, exactly like they are! :I thought cpio was the deal, but no way, I tried several -H formats but=20 :that hasn't changed anything. As soon as a file gets restored the flag=20 :... Tr

Re: read vs. mmap (or io vs. page faults)

2004-06-22 Thread Matthew Dillon
memory, another disk (double your disk throughput), GigE network card, even a whole new machine so you now have two slightly slower machines (200%) rather then one slightly faster machine (115%). -Matt Matthew Dillon <[EMAIL PROTECTED]> ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"

Re: read vs. mmap (or io vs. page faults)

2004-06-21 Thread Matthew Dillon
face. I might do it myself, if I can find the time down the road. -Matt Matthew Dillon <[EMAIL PROTECTED]> ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"

Re: read vs. mmap (or io vs. page faults)

2004-06-21 Thread Matthew Dillon
-Matt Matthew Dillon <[EMAIL PROTECTED]> ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"

Re: read vs. mmap (or io vs. page faults)

2004-06-21 Thread Matthew Dillon
: := pre-faulting is best done by a worker thread or child process, or it := will just slow you down.. : :Read is also used for large files sometimes, and never tries to prefetch :the whole file at once. Why can't the same smarts/heuristics be employed :by the page-fault handling code -- especiall

Re: read vs. mmap (or io vs. page faults)

2004-06-20 Thread Matthew Dillon
ta in each page across the mmap(), before you begin any processing). -Matt Matthew Dillon <[EMAIL PROTECTED]> := It's hard to say. mmap() could certainly be mad

Re: read vs. mmap (or io vs. page faults)

2004-06-20 Thread Matthew Dillon
27;s fairly difficult to beat a read copy into a small buffer. -Matt Matthew Dillon <[EMAIL PROTECTED]> ___ [EMAIL PROTECTED]