Alex Chekholko schrieb: > On Wed, 5 Nov 2008 16:12:51 +0100 > Kern Sibbald <[EMAIL PROTECTED]> wrote: > > > For writing to tape (providing it is LTO-n) I strongly recommend a block > > size > > not to exceed 256K. > > > > Hi Kern, > > Why do you say that? Is this thread relevant?: > http://www.mail-archive.com/[email protected]/msg01246.html > > Also, I would like to corroborate the OP's experiences; I had an almost > identical thread about small block size and slow write speed: > http://www.nabble.com/LTO-4-performance--td17407840.html > > In fact, I was unable to get higher block sizes working at all with > btape: > http://www.adsm.org/lists/html/Bacula-users/2008-05/msg00504.html > > So I am still stuck at ~22MB/s writing to LTO-4 with the default block > size.
I don't think that the blocksize is the problem. I did some tests but couldn't get higher results with larger blocksizes. I get 75-85 MB/s with the default bs and no additional tuning. Ralf ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Bacula-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/bacula-devel
