[pve-devel] multipath problems
Michael Rasmussen
mir at datanom.net
Wed Aug 22 08:16:22 CEST 2012
On Wed, 22 Aug 2012 05:28:08 +0000
Dietmar Maurer <dietmar at proxmox.com> wrote:
> # hdparm -t /dev/mapper/mpath1
>
> /dev/mapper/mpath1:
> Timing buffered disk reads: 266 MB in 3.02 seconds = 88.04 MB/sec
>
> So there is no speed gain. I already checked that traffic is routed to different network cards.
> Any idea why it is that slow?
>
hdparm for some reasons gives wrong figures when testing iSCSI, it
seems there is a lot of overhead involved the first time it runs in
which case running several consecutive times gives more reasonable
numbers. Maybe you are facing the same so
for i in {1..5}; do
hdparm -t /dev/mapper/mpath1
done
--
Hilsen/Regards
Michael Rasmussen
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