Hi I encounter very variable write speeds - example during one backup: Writing spool 1: *25.38M/s* (7:03) Writing spool 2: 149.1M/s (1:12) Writing spool 3: 153.3M/s (1:10) Writing spool 4: *12.66M/s* (14:08) Writing spool 5: 120.6M/s (1:29) Writing spool 6: 153.3M/s (1:10) Writing spool 6: 44.37M/s (4:02)
I have an IBM LTO-6 drive - SAS. I am using a tmpfs as spool disk with a spool size of 10G (so no disk involved) The CPU is at 0% for most of the time (I see storage daemon taking 3% cpu for a few seconds then go back to sleep) The max block size of the media is 1048576 (1M) The min block size is set to 0 (Do I need to change it to 1M too? if yes, can I change it without problem?) -I do not believe as it has to write 10G, I suppose it will always fill the block to the max size. I encounter this with all the tapes I have (so likely not a defective tape). Data written to tape is encrypted so likely not (highly) compressible by the drive that could explain potentially burst of write speed when writing highly compressible data. Any idea what could cause those random slow downs (and how to fix it ;-) )? Thanks a lot! Thierry -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/bareos-users/5d70a05f-2da8-4a2a-8a70-4e7187b87d36n%40googlegroups.com.
