Disklatenz Rootserver

lucash · 2. Januar 2014

Hallo,

ich hätte eine Frage zu den KVMs. Wie sieht es da mit der Disklatenz aus? Hat jemand iopings?

Viele Grüße,
lucash

twiddern · 3. Januar 2014

Hallo,

ich hoffe die beiden reichen dir. Einmal auf einer dmcrypt Partition und direkt auf das "Device". Falls du andere Werte benötigst, sag Bescheid und gib mir die Parameter.

Code

4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=1 time=556 us
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=2 time=16.9 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=3 time=10.8 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=4 time=21.6 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=5 time=14.7 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=6 time=30.1 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=7 time=270 us
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=8 time=44.9 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=9 time=18.2 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=10 time=21.3 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=11 time=214 us
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=12 time=14.6 ms
4.0 KiB from /dev/mapper/vda2_crypt (device 149.0 GiB): request=13 time=417 us




--- /dev/mapper/vda2_crypt (device 149.0 GiB) ioping statistics ---
13 requests completed in 13.1 s, 66 iops, 267.3 KiB/s
min/avg/max/mdev = 214 us / 15.0 ms / 44.9 ms / 12.7 ms










4.0 KiB from /dev/vda (device 156.0 GiB): request=1 time=9.8 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=2 time=10.0 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=3 time=13.0 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=4 time=21.1 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=5 time=160 us
4.0 KiB from /dev/vda (device 156.0 GiB): request=6 time=19.5 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=7 time=134 us
4.0 KiB from /dev/vda (device 156.0 GiB): request=8 time=13.3 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=9 time=12.5 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=10 time=17.1 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=11 time=10.8 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=12 time=9.4 ms
4.0 KiB from /dev/vda (device 156.0 GiB): request=13 time=13.8 ms




--- /dev/vda (device 156.0 GiB) ioping statistics ---
13 requests completed in 13.0 s, 86 iops, 344.7 KiB/s
min/avg/max/mdev = 134 us / 11.6 ms / 21.1 ms / 6.0 ms

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lucash · 3. Januar 2014

Hallo,

Danke schonmal! Mich würden vor allen Dingen Werte von mehreren Kunden interessieren, da ich die Plattenlatenz immer als Knackpunkt bisher hatte - immer so um die 18ms.