Bug 114024 - Writing to USB stick extremely slow
Summary: Writing to USB stick extremely slow
Status: RESOLVED DUPLICATE of bug 105871
: 117667 (view as bug list)
Alias: None
Product: SUSE LINUX 10.0
Classification: openSUSE
Component: Hotplug (show other bugs)
Version: RC 1
Hardware: Other All
: P5 - None : Normal
Target Milestone: ---
Assignee: Ihno Krumreich
QA Contact: E-mail List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-08-30 06:44 UTC by Kevin Ivory
Modified: 2005-09-19 15:30 UTC (History)
4 users (show)

See Also:
Found By: Other
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Kevin Ivory 2005-08-30 06:44:12 UTC 
(noticed with Beta 2 and 3) - writing to my USB stick is extremely slow.
Writing 10M takes 1.7s with SUSE 9.3, 7min with SUSE 10.0.
For exact times see below.
hwinfo.txt of my system is attached to other bug #113930
https://bugzilla.novell.com/attachment.cgi?id=48047&action=view

time dd if=/dev/zero of=/media/USBSTICK/zero10M.suse9.3 bs=1M count=10
10+0 records in
10+0 records out
10485760 bytes (10 MB) copied, 1.60482 seconds, 6.5 MB/s

real    0m1.723s
user    0m0.003s
sys     0m0.144s

time dd if=/dev/zero of=/media/USBSTICK/zero10M.suse100 bs=1M count=10
10+0 records in
10+0 records out
10485760 bytes (10 MB) copied, 415.437 seconds, 25.2 kB/s

real    6m55.526s
user    0m0.008s
sys     0m0.840s
Comment 1 Danny Al-Gaaf 2005-08-30 07:41:30 UTC 
please attach output of 'cat /proc/mounts' from 9.3 and 10.0 to the bug.
Comment 2 Danny Al-Gaaf 2005-08-30 09:28:58 UTC 
Can you please check if this is related to Bug #105964 "iPod being found as full 
speed device"
Comment 3 Kevin Ivory 2005-08-30 09:56:48 UTC 
yes, it does look like exactly the same problem. I have CCed there now.
Both tests, "MODULES_TO_LOAD_ON_BOOT" and contents of /proc/mounts, 
I can only do this evening.
Comment 4 Danny Al-Gaaf 2005-08-31 07:10:46 UTC 

*** This bug has been marked as a duplicate of 105964 ***
Comment 5 Kevin Ivory 2005-09-13 10:38:06 UTC 
As mentioned by people on that bug, this is something completely different to
the uhci/ehci conflict problem.
Since my problem still exists in RC1, I am reopening this bug.
For this bug, the info from bug #105964 comment #28 is important: a manual mount
(i.e. without sync option) makes the extremely long writing times short again.
Comment 6 Danny Al-Gaaf 2005-09-13 10:48:39 UTC 
@adrian: any ideas? Should maybe chris m. or jeff take a look at this problem 
with sync and subfs?
Comment 7 Kevin Ivory 2005-09-13 11:41:12 UTC 
please assign the needinfo to the correct person
Comment 8 Danny Al-Gaaf 2005-09-19 10:17:33 UTC 
*** Bug 117667 has been marked as a duplicate of this bug. ***
Comment 9 Pavel Nemec 2005-09-19 12:54:45 UTC 
same bug #115858
Comment 10 Kevin Ivory 2005-09-19 14:17:17 UTC 
This bug writing from any hardware to my/any(?) USB 2.0 stick (1 MB writing
about 1 min). It seems like many others have the same bug. It is not exactly
critical but will give bad publicity with any magazine reporting about SUSE
10.0. I am wondering if NEEDINFO is the correct status and if it shouldn't be
assigned to someone.
Comment 11 Adrian Schröter 2005-09-19 15:30:35 UTC 
Another bugreport about slow down for USB 2.0 devices since SUSE 9.3 (sync 
used in both cases). 

*** This bug has been marked as a duplicate of 105871 ***