Sorry. I should have included a few more details:
Old equipment but more than 2MB/s worth I assume. (AIT-4 rated at ~24MB/s)
Sony SDX-900V AIT-4 inside of a Sony LIB-81
Intel(R) Pentium(R) 4 CPU 3.00GHz
2GB RAM
MySQL 5.0.45
Bacula 5.2.6
CentOS release 5.3 i386
Not using much CPU at all:
PID
You don't mention the technology behind your tape drive, database backend,
CPU, RAM, or what your disk subsystem looks like--all of which would be
useful to have a reasonable chance to analyze even vaguely properly, but
I'll wade in nonetheless.
You are almost certainly shoeshining the heck out of
I'm only seeing around 2MB/s write speed to tape. I have read all about
spooling the data, etc. I would expect this to be an issue if I was complaining
about getting 18-25 MB/s instead of 90-100MB/s maybe? Anyways, I simply cannot
understand why a single job runs at 2 MB/s and 3 jobs will run ab
