Bug 6664 - Linux performs poorly at copying large files between partitions on nForce 3 motherboard
Summary: Linux performs poorly at copying large files between partitions on nForce 3 m...
Status: REJECTED INVALID
Alias: None
Product: IO/Storage
Classification: Unclassified
Component: IDE (show other bugs)
Hardware: i386 Linux
: P2 low
Assignee: Bartlomiej Zolnierkiewicz
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-06-08 03:34 UTC by Artem S. Tashkinov
Modified: 2006-10-20 22:19 UTC (History)
0 users

See Also:
Kernel Version: 2.6.16.19
Subsystem:
Regression: ---
Bisected commit-id:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Description Artem S. Tashkinov 2006-06-08 03:34:46 UTC 
Most recent kernel where this bug did not occur: not known
Distribution: FC5
Hardware Environment: CPU Sempron 3400; GigaByte K8NS Pro Motherboard; nForce3
250GB chipset; Two HDD on the same IDE channel; Two SATA drives
Software Environment:
Problem Description:

1) Copying a large file between two HDD with newly created empty FAT32
partitions on the same IDE channel gives these results (Linux runned with no
background tasks, i.e. with zero CPU load):

Windows XP SP2 with nVidia IDE drivers: ~33Mb/sec (CPU usage ~ 15%)
Linux: ~22Mb/sec (CPU usage ~ 10%)

2) The same situation but two SATA drives (empty FAT32 partitions)

Windows XP SP2 with nVidia IDE drivers: ~38Mb/sec
Linux: ~27Mb/sec

P.S. File reading on the both drives gives an average 55Mb/s throughput
Note You need to log in before you can comment on or make changes to this bug.