|Summary:||Slow write performance on PNY brand CF card in PCMCIA adapter with EXT2 fs|
|Product:||[Fedora] Fedora||Reporter:||Andrew D. Stadler <stadler>|
|Component:||hal||Assignee:||David Zeuthen <davidz>|
|Status:||CLOSED INSUFFICIENT_DATA||QA Contact:|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2008-02-12 01:20:26 UTC||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Cloudforms Team:||---||Target Upstream Version:|
Description Andrew D. Stadler 2005-07-20 01:19:08 UTC
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-us) AppleWebKit/412.6 (KHTML, like Gecko) Safari/412.2 Description of problem: I have been evaluating a number of compact flash cards and one of my tests is write speed from my development laptop (an IBM T30). I am running FC3 (latest) and using a typical CF/PCMCIA adapter. I found that the PNY 512 Mb card (THNCF512MPG) had significantly worse performance than all of the other cards I tested (SanDisk, Crucial, Lexar). A large write that took 1-2 minutes on the other cards took more than 20 minutes on the PNY card. I tested the same card on two other systems and while it was not the fastest card I tested, it was at least useable. On linux it was essentially unuseable. Finally, this problem is only seen when the card is formatted with ext2 file system. When formatted with vfat (e.g. FAT16) it has fairly fast performance. Version-Release number of selected component (if applicable): hal-0.4.7-1.FC3 How reproducible: Always Steps to Reproduce: 1. Insert PNY 512 Mb card (THNCF512MPG) into CF/PCMCIA adapter 2. Insert adapter into laptop slot and observe volume(s) mounting 3. Format the CF card into two partitions, equal size, and mkfs "ext2" on one and "vfat" on the other 4. Eject/Insert the card, verify the volumes mount, and verify (/etc/mtab) that they mounted with "sync" option 5. Copy a large file (I used approx 6mb binary) onto each partition and measure the elapsed time Actual Results: About 15 sec. to copy onto vfat and nearly 20 minutes (I gave up) copying onto ext2 Expected Results: Roughly equal speeds and dominated by hardware speed not be drive format. Additional info:
Comment 1 Matthew Miller 2006-07-10 21:28:04 UTC
Fedora Core 3 is now maintained by the Fedora Legacy project for security updates only. If this problem is a security issue, please reopen and reassign to the Fedora Legacy product. If it is not a security issue and hasn't been resolved in the current FC5 updates or in the FC6 test release, reopen and change the version to match. Thank you!
Comment 2 petrosyan 2008-02-12 01:20:26 UTC
Fedora Core 3 is not maintained anymore. Setting status to "INSUFFICIENT_DATA". If you can reproduce this bug in the current Fedora release, please reopen this bug and assign it to the corresponding Fedora version.