From: Greg 'groggy' Lehey <grog@lemis.com>
To: Theodore Ts'o <tytso@mit.edu>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] tunefs -m 5%
Date: Sat, 6 Mar 2021 12:18:25 +1100 [thread overview]
Message-ID: <20210306011824.GB80491@eureka.lemis.com> (raw)
In-Reply-To: <YEJO/47hHmW1Pf8Q@mit.edu>
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On Friday, 5 March 2021 at 10:32:15 -0500, Theodore Ts'o wrote:
> On Fri, Mar 05, 2021 at 01:50:32AM -0800, John Gilmore wrote:
>> John P. Linderman <jpl.jpl@gmail.com> wrote:
>>> I have several 12 TB disks scattered about my house. 5% of 12TB is 600GB.
>>
>> At one point in hystery, ext2 performance was reported to suffer badly
>> if there was less than 5% of disk space available in an active
>> filesystem. My naive belief, probably informed by older and wiser heads
>> around Sun, was that when the file system was >95% full, ext2 spent a
>> lot of time seeking around in free lists finding single allocatable
>> blocks. And there were no built-in "defragmentation" programs that
>> could easily fix that.
>
> I'll point out that BSD FFS, at least in BSD 4.3, reserves 10% of the
> file system for reserved blocks.
Oops, that's what I get for reading messages sequentially :-( But in
this case it's for small values of 10.
Greg
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next prev parent reply other threads:[~2021-03-06 1:18 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-04 16:52 [TUHS] tabs vs spaces - entab, detab Will Senn
2021-03-04 16:59 ` Clem Cole
2021-03-04 18:31 ` arnold
2021-03-04 19:23 ` Nemo Nusquam
2021-03-04 19:37 ` Steve Nickolas
2021-03-04 19:50 ` Rob Pike
2021-03-04 21:20 ` Robert Clausecker
2021-03-04 21:25 ` Will Senn
2021-03-05 9:58 ` John Gilmore
2021-03-06 21:31 ` Dave Horsfall
2021-03-06 21:38 ` Larry McVoy
2021-03-06 22:05 ` Clem Cole
2021-03-15 3:02 ` John Cowan
2021-03-15 18:15 ` Steffen Nurpmeso
2021-03-15 21:19 ` Bakul Shah
2021-03-15 23:47 ` Steffen Nurpmeso
2021-03-16 3:10 ` Earl Baugh
2021-03-15 21:08 ` Dave Horsfall
2021-03-15 21:12 ` Steve Nickolas
2021-03-15 21:24 ` Dave Horsfall
2021-03-15 22:06 ` Adam Thornton
2021-03-16 13:25 ` arnold
2021-03-17 5:10 ` Greg 'groggy' Lehey
2021-03-06 21:40 ` Steve Nickolas
2021-03-04 18:48 ` emanuel stiebler
2021-03-05 0:44 ` John Cowan
2021-03-05 0:55 ` Larry McVoy
2021-03-05 1:09 ` George Michaelson
2021-03-05 1:21 ` Larry McVoy
2021-03-05 1:29 ` Richard Salz
2021-03-04 18:33 ` John P. Linderman
2021-03-04 21:24 ` Greg 'groggy' Lehey
2021-03-04 21:27 ` Will Senn
2021-03-04 21:29 ` Greg 'groggy' Lehey
2021-03-04 21:42 ` Will Senn
2021-03-04 21:48 ` John P. Linderman
2021-03-04 22:08 ` Andy Kosela
2021-03-04 22:12 ` Greg 'groggy' Lehey
2021-03-05 14:13 ` Steffen Nurpmeso
2021-03-05 20:24 ` John Cowan
2021-03-05 21:51 ` Bakul Shah
2021-03-06 23:43 ` Steffen Nurpmeso
2021-03-05 0:15 ` Jon Steinhart
2021-03-06 21:22 ` Dave Horsfall
2021-03-06 23:58 ` Bakul Shah
2021-03-07 0:03 ` Jon Steinhart
2021-03-07 0:25 ` Steve Nickolas
2021-03-07 9:16 ` Brantley Coile
2021-03-05 9:50 ` [TUHS] tunefs -m 5% John Gilmore
2021-03-05 15:01 ` Grant Taylor via TUHS
2021-03-05 15:32 ` Theodore Ts'o
2021-03-06 1:18 ` Greg 'groggy' Lehey [this message]
2021-03-06 1:52 ` Warner Losh
2021-03-06 21:45 ` Dave Horsfall
2021-03-06 22:03 ` Larry McVoy
2021-03-09 4:59 ` Greg 'groggy' Lehey
2021-03-06 23:52 ` David Barto
2021-03-06 1:16 ` Greg 'groggy' Lehey
2021-03-04 22:10 ` [TUHS] tabs vs spaces - entab, detab Greg A. Woods
2021-03-05 1:41 ` alan
2021-03-05 1:55 ` alan
2021-03-05 2:06 ` Will Senn
2021-03-05 17:08 ` Clem Cole
2021-03-05 17:19 ` Richard Salz
2021-03-05 19:39 ` Lawrence Stewart
2021-03-05 19:51 ` Dan Halbert
2021-03-08 1:52 ` Will Senn
2021-03-05 16:43 ` Scot Jenkins via TUHS
2021-03-05 22:23 ` Bakul Shah
2021-03-06 20:51 ` Dave Horsfall
2021-03-06 21:01 ` Jon Steinhart
2021-03-06 21:19 ` Larry McVoy
2021-03-06 22:01 ` Clem Cole
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