Date: Thu, 22 Jun 1995 22:28:34 +0300 From: Heikki Suonsivu <hsu@cs.hut.fi> To: freebsd-current@freefall.cdrom.com Subject: Does -o async do anything? Message-ID: <199506221928.WAA26211@shadows.cs.hut.fi>
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I needed to copy a news partition over to another disk, so I told mount -o
async on those disks. There was no noticeable improvement in performance.
Neither it seems to have any effect on a running news system, which should
gain considerably on doing asyncronous writes. The hardware is a P90 with
4G seagate hawk, no load other than copy (ie. cpu is practically idle).
On a similar linux system it was hard to tell whether it was tar tf or tar
xvf running, so it would seem that FreeBSD -o async doesn't disable all
synchronous writing, if anything at all?
--
Heikki Suonsivu, T{ysikuu 10 C 83/02210 Espoo/FINLAND,
hsu@cs.hut.fi home +358-0-8031121 work -4513377 fax -4555276 riippu SN
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