From: Marco Gaiarin <gaio@lilliput.linux.it>
To: pve-user@lists.proxmox.com
Subject: [PVE-User] Disk performance test guidance...
Date: Sun, 24 Apr 2022 19:56:35 +0200 [thread overview]
Message-ID: <hjfgji-e552.ln1@hermione.lilliput.linux.it> (raw)
In a set of servers (some brand new dell T440 with 64GB or RAM, 2 500M SSD
ZFS Raid 1, three 4TB HDD in ZFS raid3) we are catching some performance
issue, eg in some operation we catch 10/20 MB/s maximal performance, with
load that go sky high (load 40).
An example: a couple of identical servers, connected via single gigabit
connection.
I've setup on server B a NFS server on HDD ZFS pool, then a NFS type storage
(on both servers, they are clustered).
I've copied from my PC a PVE VM backup, roughly 500GB of data, via NFS to
server B: 80-90 MB/s, load 2-4.
I've restored the VM on server A, thus *reading* data fron NFS, and
restoring again on HDD ZFS pool on server A: 10-20 MB/s transfer rate, load
at 40.
This make no sense to me. As subject say, there's some 'Disk performance test
guidance' document, so i can test and find the bottleneck?
Thanks.
--
Consolatevi! Sul sito http://www.sorryeverybody.com migliaia di americani
chiedono scusa al mondo per la rielezione di Bush. (da Cacao Elefante)
next reply other threads:[~2022-04-24 18:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-24 17:56 Marco Gaiarin [this message]
2022-04-25 14:07 ` Sylvain Le Blanc
2022-04-27 20:33 ` Marco Gaiarin
2022-04-26 6:36 ` nada
2022-04-27 20:35 ` Marco Gaiarin
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