Am 01.06.22 um 12:04 schrieb Jose M Calhariz:
How many DLEs and how many run in parallel (inparallel parameter)?
inparallel 4
basically 3 linux hosts involved, 20 DLEs, some of them via amsamba
I even have to encrypt things ...
Maybe I should decrease inparallel, yes
And only flush after the DLEs are on disk.
How fast is your holdingdisk?
rather slow. 4x 5400 rpm drives in a HW RAID1 -> /dev/sda
What "iostat -k -x 2" command gives when amanda is running?
*thanks* for that pointer
It tells that /dev/sda is 100% utilized.
So that seems to be the bottleneck.
Especially as there is a rsnapshot-cronjob also on that box. This is
quite heavy for that CPU and the storage.
Right now as I disabled rsnapshot, I was able to flush a 200GB DLE
successfully .. and in acceptable time:
43 minutes
82753.8 KB/s
Better that multiple hours each night. Much better.
-
changes today:
* changed blocksize from 4m to 1m .. maybe I can go back here
* downgraded to 3.5.1 (just to minimize the moving parts)
* made sure the holding disk is mounted with "noatime"
changes planned:
* bigger and faster disk(s) for the holding disk
* split off rsnapshot-ting: either move that to another server, or at
least make sure it never runs in parallel to amdumps etc
I test an rsnapshot run now and also watch iostat ... same bottleneck:
/dev/sda
