From: Adam Carter <adamcarter3@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: Normal disk speed?
Date: Thu, 7 Oct 2010 09:59:08 +1100 [thread overview]
Message-ID: <AANLkTi=+DxQqvYCVefBW2r6disXWKQT0E+YjtEKqDbeY@mail.gmail.com> (raw)
In-Reply-To: <4CACC555.309@admin-box.com>
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WOW! Those differences are crazy!
>
> Please - I know benchmarking takes a lot of time - but could you check
> something: the behavior those fs have at what time they flush data from
> cache to disk is very different. Have you made sure that you measured
> the time it really needs? I mean the difference between:
>
> $ sync; time cp source dest
> and
> $ sync; time (cp source dest; sync)
>
> Only the last measures somewhat correctly.
>
I had noticed that there was, say, 5 seconds of disk activity after the cp
command complete which I assumed was buffers getting flushed, but 5 seconds
didnt seem that significant overall. I will run the tests as you suggest and
post back. Do you think btrfs (with or without compression) would be faster
than reiser? If so I will try that as well.
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next prev parent reply other threads:[~2010-10-06 23:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-30 10:58 [gentoo-user] Normal disk speed? Adam Carter
2010-09-30 13:10 ` Florian Philipp
2010-09-30 16:00 ` Peter Humphrey
2010-09-30 16:12 ` [gentoo-user] " Nikos Chantziaras
2010-09-30 16:50 ` [gentoo-user] " Florian Philipp
2010-09-30 21:43 ` Peter Humphrey
2010-09-30 13:26 ` [gentoo-user] " James
2010-09-30 16:53 ` [gentoo-user] " Volker Armin Hemmann
2010-10-01 1:12 ` Adam Carter
2010-10-01 4:41 ` Volker Armin Hemmann
2010-10-01 8:42 ` Florian Philipp
2010-10-01 16:23 ` Volker Armin Hemmann
2010-10-02 2:11 ` Adam Carter
2010-10-02 11:54 ` Florian Philipp
2010-10-02 12:11 ` Volker Armin Hemmann
2010-10-02 12:44 ` Florian Philipp
2010-10-02 15:06 ` Florian Philipp
2010-10-01 9:05 ` Daniel Troeder
2010-10-01 14:40 ` [gentoo-user] " James
2010-10-02 17:29 ` Daniel Troeder
2010-10-03 0:13 ` James
2010-10-06 8:04 ` Adam Carter
2010-10-06 18:52 ` Daniel Troeder
2010-10-06 22:59 ` Adam Carter [this message]
2010-10-07 9:33 ` Daniel Troeder
2010-10-18 10:03 ` Adam Carter
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