From: Pat LaVarre <p.lavarre@ieee.org>
To: linux-fsdevel@vger.kernel.org
Subject: Re: zeroes read back more often than appended
Date: 26 Nov 2003 17:45:04 -0700 [thread overview]
Message-ID: <1069893904.4318.18.camel@patrh9> (raw)
In-Reply-To: <1069346480.6663.37.camel@patrh9>
No improvement in 2.6.0-test10 with CONFIG_SMP = CONFIG_PREEMPT = default = on.
$ uname -msr
Linux 2.6.0-test10 i686
$
$ date ; time fswhd 0 768 mkudffs 0xFF600 0xC8 0x1
Wed Nov 26 17:03:48 MST 2003
Linux 2.6.0-test10 i686
/home/pat
dd if=/dev/zero of=dd.bin bs=1M seek=0 count=768 2>/dev/null
-rw-rw-r-- 1 pat pat 805306368 Nov 26 17:04 dd.bin
mkudffs 1.0.0b2 for UDF FS 1.0.0-cvs, 2002/02/09
0
hexdump -C whd0.bin | head -3
00000000 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa |................|
*
01f91000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
+++ 2.dmesg 2003-11-26 17:05:38.838645504 -0700
+mplete Error }
+UDF-fs DEBUG fs/udf/balloc.c:192:udf_bitmap_free_blocks: bit 2728 already set
+UDF-fs DEBUG fs/udf/balloc.c:193:udf_bitmap_free_blocks: byte= 1
+UDF-fs DEBUG fs/udf/balloc.c:192:udf_bitmap_free_blocks: bit 2728 already set
real 2m15.777s
user 0m2.438s
sys 0m6.433s
$
$ date ; time fswhd 0 768 mkudffs 0xFF600 0xC8 0x2
Wed Nov 26 17:07:38 MST 2003
Linux 2.6.0-test10 i686
/home/pat
dd if=/dev/zero of=dd.bin bs=1M seek=0 count=768 2>/dev/null
-rw-rw-r-- 1 pat pat 805306368 Nov 26 17:12 dd.bin
mkudffs 1.0.0b2 for UDF FS 1.0.0-cvs, 2002/02/09
0
hexdump -C whd0.bin | head -3
00000000 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa |................|
*
01ff0000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
hexdump -C whd1.bin | head -3
00000000 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa |................|
*
02ffb000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
+++ 2.dmesg 2003-11-26 17:17:52.278145752 -0700
+logicalvol: FileSet found in LogicalVolDesc at block=24, partition=0
+UDF-fs DEBUG fs/udf/balloc.c:192:udf_bitmap_free_blocks: bit 13358 already set
+UDF-fs DEBUG fs/udf/balloc.c:193:udf_bitmap_free_blocks: byte=40
+UDF-fs DEBUG fs/udf/balloc.c:192:udf_bitmap_free_blocks: bit 13358 already set
real 10m28.744s
user 0m7.642s
sys 0m10.885s
$
next prev parent reply other threads:[~2003-11-27 0:45 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-20 16:41 zeroes read back more often than appended Pat LaVarre
2003-11-27 0:45 ` Pat LaVarre [this message]
2003-11-28 18:20 ` Pat LaVarre
2003-11-28 18:29 ` Pat LaVarre
-- strict thread matches above, loose matches on Subject: below --
2003-12-11 18:42 Pat LaVarre
2003-10-07 19:02 Pat LaVarre
2003-10-07 20:54 ` Pat LaVarre
2003-10-08 3:49 ` Ben Fennema
2003-10-08 16:41 ` Pat LaVarre
2003-10-08 17:02 ` Pat LaVarre
2003-10-08 17:21 ` Pat LaVarre
2003-10-08 20:32 ` Pat LaVarre
2003-10-09 20:54 ` Pat LaVarre
2003-10-10 0:52 ` Pat LaVarre
2003-10-10 16:39 ` Pat LaVarre
2003-10-10 18:15 ` Pat LaVarre
2003-10-14 0:38 ` Pat LaVarre
2003-10-14 1:48 ` Pat LaVarre
2003-10-20 23:20 ` Pat LaVarre
2003-10-21 14:47 ` Pat LaVarre
2003-10-21 16:46 ` Pat LaVarre
2003-10-21 18:44 ` Pat LaVarre
2003-10-23 18:52 ` Pat LaVarre
2003-10-27 21:55 ` Pat LaVarre
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1069893904.4318.18.camel@patrh9 \
--to=p.lavarre@ieee.org \
--cc=linux-fsdevel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.