From: Marco Gaiarin <gaio@sv.lnf.it>
To: pve-user@lists.proxmox.com
Subject: [PVE-User] ZFS configurations, performance and optimization...
Date: Mon, 26 Jul 2021 11:37:46 +0200 [thread overview]
Message-ID: <20210726093746.GB3289@sv.lnf.it> (raw)
Consider two rather equal servers, both with equal disks (2TB
rotational drives); one server have a ZFS mirror (two disk), the other
have a ZFS RAIDZ1, with 3 disks.
Both server are unload, we are moving data in, via single
Gigabit connection.
Moving data into the ZFS mirror lead to a impressive 120 Mbyte/s
writing speed, with little or no iodelay (1-2 %).
Moving data into ZRAID1 lead to an 60-70 Mbyte/s writing speed, no
more, and a decent iodelay on the system (8-10 %).
Both seems to me configured equally (eg, for example, no compression).
I've read:
https://pve.proxmox.com/wiki/ZFS_on_Linux#sysadmin_zfs_raid_considerations
but really i'm got a bit lost... there's somewhere a more clear
explanation of the 'effect', and i hope some parameters to tackle with?
Thanks.
PS: it is not a problem 'per se', the RAIDZ1 pool could be 'slow', but
i've the doubt to have done somthing wrong...
--
dott. Marco Gaiarin GNUPG Key ID: 240A3D66
Associazione ``La Nostra Famiglia'' http://www.lanostrafamiglia.it/
Polo FVG - Via della Bontà, 7 - 33078 - San Vito al Tagliamento (PN)
marco.gaiarin(at)lanostrafamiglia.it t +39-0434-842711 f +39-0434-842797
Dona il 5 PER MILLE a LA NOSTRA FAMIGLIA!
http://www.lanostrafamiglia.it/index.php/it/sostienici/5x1000
(cf 00307430132, categoria ONLUS oppure RICERCA SANITARIA)
next reply other threads:[~2021-07-26 9:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 9:37 Marco Gaiarin [this message]
2021-07-26 21:35 ` Yanni M.
2021-07-28 16:35 ` Marco Gaiarin
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