Flavio Junior schrieb:
> Yeah, I'd tested with btape. But i cant remember its output now ;/
>
> I remember that it take a loooong time..
>
> Ralf, how can I check iowait from spool device ?
with dstat, sar or iostat for example.
# iostat /dev/sda 1
Linux 2.6.18-4-amd64 (VU0EM003) 21.11.2007
avg-cpu: %user %nice %system %iowait %steal %idle
0,70 0,00 0,78 0,10 0,00 98,42
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 11,89 1176,57 129,15 15439828732 1694770526
avg-cpu: %user %nice %system %iowait %steal %idle
0,50 0,00 1,61 0,00 0,00 97,89
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 0,00 0,00 0,00 0 0
avg-cpu: %user %nice %system %iowait %steal %idle
1,62 0,00 3,50 0,50 0,00 94,38
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 0,00 0,00 0,00 0 0
sar will show you a nice overview.
sar -f /var/log/sysstat/sa18
Linux 2.6.18-4-amd64 (VU0EM003) 18.11.2007
00:00:01 CPU %user %nice %system %iowait %steal
%idle
00:05:01 all 0,31 0,00 0,47 0,01 0,00
99,21
00:15:02 all 0,35 0,00 0,51 0,00 0,00
99,14
00:25:01 all 1,11 0,00 2,11 1,93 0,00
94,85
00:35:01 all 2,46 0,00 4,88 0,94 0,00
91,72
00:45:01 all 2,14 0,00 4,24 0,81 0,00
92,81
00:55:01 all 0,62 0,00 1,12 1,03 0,00
97,23
01:05:01 all 0,32 0,00 0,48 0,00 0,00
99,19
At 00:05 on sunday a differential backup with spooling was started.
Ralf
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