On Mon, 2007-Jan-29 16:45:13 -0500, Robert Huff wrote: >huff_at_>>dump 0 -D /tmp/DF -Lau -f /dev/null /usr >& /tmp/null_dump I'd drop the '-u' and '-D' and add a '-C'. When sizing the cache, take into account that each dump subprocess (typically around 5) will allocate that much RAM. >huff_at_>>cat /tmp/null_dump ... > DUMP: DUMP: 27485576 tape blocks on 1 volume > DUMP: finished in 13818 seconds, throughput 1989 KBytes/sec That is not good. Presumably the dmesg output looks sane (ie it's not running narrow SCSI-1) and dd (or similar) report decent thruput. Can you provide some more details on the FS? What are the block and frag sizes and how many inodes are used? -- Peter Jeremy
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