Date: Mon, 30 Apr 2001 10:20:54 +0200 From: Cejka Rudolf <cejkar@dcse.fee.vutbr.cz> To: Bruce Evans <bde@zeta.org.au> Cc: current@FreeBSD.ORG Subject: Re: Experiences with new dir allocation on FFS? Message-ID: <20010430102054.A4474@dcse.fee.vutbr.cz> In-Reply-To: <no.id>; from bde@zeta.org.au on Sat, Apr 28, 2001 at 02:34:12PM %2B1000
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Bruce Evans wrote (2001/04/28):
> This is probably caused by write caching now being off by default
> in the ata driver, possibly amplified by not using soft updates.
> Without the new dir allocation, -current would be even slower :(.
Yes, thanks. I really forgot on this change.
My rough results are now:
Old s./wc enabled New s./wc enabled New s./wc disabled
tar xvfz 8 minutes 4 minutes 14 minutes
rm -r 5 minutes 1 minute 2 minutes
There is another reason for tar "slowness": Current version of
tar seems to be faster than our old system tar: 3m23 against 3m44
for tar xvfz with wc enabled. I think there are even bigger
differences with tar cvfz and tar xvfz with wc disabled.
--
Rudolf Cejka (cejkar@dcse.fee.vutbr.cz; http://www.fee.vutbr.cz/~cejkar)
Brno University of Technology, Faculty of El. Engineering and Comp. Science
Bozetechova 2, 612 66 Brno, Czech Republic
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