We have recently installed Bacula onto a FreeBSD server and several Linux,
SunOS and FreeBSD clients. The Bacula director and storage daemon run on a box
with about 6 terabytes of RAID6 storage (SATA 300 drives, 1TB each, Adaptec
RAID controller with 512MB cache). The box has 16GB of RAM and is not really
doing much else right now. We're using mySQL for our database back-end, and we
have MD5 hashing of files turned off ("Accurate = mcs" and "Verify = mcs" are
set in bacula-dir.conf).
However, we're getting pretty pitiful throughput numbers. When I scp a file
from my workstation to the Bacula server, I get something like 40MB/s
(320Mb/s). When Bacula runs, we're lucky to get 20MB/s (160Mb/s), and we often
get numbers closer to 10MB/s (80Mb/s).
I Googled "tuning bacula" and came up with primarily stuff related to tuning
Postgres as it relates to Bacula, but nothing about tuning the file daemon or
the storage daemon. Can anyone point me to some leads as far as what I can do
to bump up the throughput? We have a data set that is several terabytes large
to back up, and it will never complete in a reasonable amount of time at
10MB/s. I need to achieve something closer to 40MB/s to make this a workable
option.
Tim Gustafson
Baskin School of Engineering
UC Santa Cruz
t...@soe.ucsc.edu
831-459-5354
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