Andreas Koch wrote:
> I am just running my first ``real'' backup job. It consists of
> backing up roughly 300GB of data via a 75GB spool partition to a DLT
> VS80 drive. While the process generally works as expected, I am
> somewhat disappointed by the performance: According to the `status
> all' statistics, Bacula 1.36.3 achieves roughly 1.5MB/s, and is
> shoe-shining the tape during despooling quite a bit. Note that the
> drive itself is rated for 3 MB/s, a speed it does indeed achieve,
> e.g., when using tar with some double buffering (to compensate for
> large numbers of small files). I had hoped that Bacula's spooling
> mechanism would actually manage to keep the tape streaming.
>
> My current setup has all daemons running on the same machine: An Athlon XP
> 1700+ CPU, 512 MB RAM, Adaptec 2400 IDE RAID-5 with 4x300GB disks and
> 128MB of on-board cache, and a Benchmark DLT VS80 drive. The spool
> disk is a dedicated 80GB IDE disk holding only the spool data.
>
> I'd be grateful for any help diagnosing this slow-down. If you need
> further info, please let me know.
I think the magic word -- or acronym -- there, may be "IDE". IDE
performance *sucks*, especially if you have more than one device on a
channel. What are the spool disk and the VS80 connected to? Can you
get them both onto their own IDE channels with no other device sharing
that channel?
--
Phil Stracchino [EMAIL PROTECTED]
Renaissance Man, Unix generalist, Perl hacker
Mobile: 603-216-7037 Landline: 603-886-3518
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