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Author Topic: Sd Card Very Slow Oz 3.5.4.1  (Read 7482 times)

henrysviper

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Sd Card Very Slow Oz 3.5.4.1
« on: January 19, 2007, 01:37:48 pm »
I finally found the time today to install OZ 3.5.4.1 (GPE) on my C750. I am very impressed with the result. It is evident that a lot of work has been put in this version.

I have however a problem that renders my installation almost unusable.
My SD card, a Toshiba 512 MB, is extremely slow: read speed is around  300 KB/sec and write speed is around 20 KB/sec. The card was working perfectly on older versions of OZ (and pdaxrom).
The card has one partition with the ext2 fs. I tried recreating the partition and the filesystem but I didn't see any improvement.

The card seems to be working (tested in a cardreader and also I don't see any relevant messages in dmesg output). Is there a way to improve its speed in OZ?
« Last Edit: January 31, 2007, 05:24:37 pm by henrysviper »
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Meanie

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Sd Card Very Slow Oz 3.5.4.1
« Reply #1 on: January 20, 2007, 06:25:15 am »
Quote
I finally found the time today to install OZ 3.5.4.1 (GPE) on my C750. I am very impressed with the result. It is evident that a lot of work has been put in this version.

I have however a problem that renders my installation almost unusable.
My SD card, a Toshiba 512 MB, is extremely slow: read speed is around  300 KB/sec and write speed is around 20 KB/sec. The card was working perfectly on older versions of OZ (and pdaxrom).
The card has one partition with the ext2 fs. I tried recreating the partition and the filesystem but I didn't see any improvement.

The card seems to be working (tested in a cardreader and also I don't see any relevant messages in dmesg output). Is there a way to improve its speed in OZ?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=151700\"][{POST_SNAPBACK}][/a][/div]

mount the sd with async option
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SL-C3000 - pdaXii13 build5.4.9 (based on pdaXrom beta3) / SL-C3100 - Sharp ROM 1.02 JP (heavily customised)
Netgear MA701 CF, SanDisk ConnectPlus CF, Socket Bluetooth CF, 4GB Kingston CF,  4GB pqi SD, 4GB ChoiceOnly SD, 2GB SanDisk SD USB Plus, 1GB SanDisk USB Plus, 1GB Transcend SD, 2GB SanDisk MicroSD with SD adaptor, Piel Frama Leather Case, GoldX 5-in-1 USB cable, USB hub, USB mouse, USB keyboard, USB ethernet, USB HDD, many other USB accessories...
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poorman

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Sd Card Very Slow Oz 3.5.4.1
« Reply #2 on: January 24, 2007, 04:51:31 pm »
Quote
Quote
I finally found the time today to install OZ 3.5.4.1 (GPE) on my C750. I am very impressed with the result. It is evident that a lot of work has been put in this version.

I have however a problem that renders my installation almost unusable.
My SD card, a Toshiba 512 MB, is extremely slow: read speed is around  300 KB/sec and write speed is around 20 KB/sec. The card was working perfectly on older versions of OZ (and pdaxrom).
The card has one partition with the ext2 fs. I tried recreating the partition and the filesystem but I didn't see any improvement.

The card seems to be working (tested in a cardreader and also I don't see any relevant messages in dmesg output). Is there a way to improve its speed in OZ?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=151700\"][{POST_SNAPBACK}][/a][/div]

mount the sd with async option
[div align=\"right\"][a href=\"index.php?act=findpost&pid=151791\"][{POST_SNAPBACK}][/a][/div]

Indeed, it works. I had the same problem with OZ 3.5.4.2 on Tosa with Lexar 1GB SD card. With 'sync' it did 1,2MB/s read and 50KB/s write copared to 1,3Mb/s read/write with 'async'.

Thank Meanie for help!

Cheers, pm
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stupkid

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Sd Card Very Slow Oz 3.5.4.1
« Reply #3 on: January 24, 2007, 06:17:58 pm »
The "noatime" mount option also improves performance on most every file system.
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speculatrix

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Sd Card Very Slow Oz 3.5.4.1
« Reply #4 on: January 24, 2007, 06:20:38 pm »
Quote
The "noatime" mount option also improves performance on most every file system.
[div align=\"right\"][a href=\"index.php?act=findpost&pid=152308\"][{POST_SNAPBACK}][/a][/div]

... and will reduce wear
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henrysviper

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Sd Card Very Slow Oz 3.5.4.1
« Reply #5 on: January 31, 2007, 05:31:14 pm »
The "async" option was indeed the solution! (actually async is the default so deleting the sync option from /etc/fstab is enough).
Stupid of me not to think of it.
Thanks everybody.

Shouldn't async be the default?
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C750 :: Switching between Angstrom and Debian armel :: SD Kingstron 2GB (ext3) :: SD Toshiba 512MB (ext3) :: CF Transcend 80x 1GB :: CF Lexar 4x 256MB :: Ambicom CF WiFi :: Targus CF Modem :: Brando solar charger

Meanie

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Sd Card Very Slow Oz 3.5.4.1
« Reply #6 on: February 01, 2007, 01:14:03 am »
Quote
The "async" option was indeed the solution! (actually async is the default so deleting the sync option from /etc/fstab is enough).
Stupid of me not to think of it.
Thanks everybody.

Shouldn't async be the default?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153092\"][{POST_SNAPBACK}][/a][/div]

yeah I reckon. it annoyed the hell out of me when it took ages to copy a tiny file....
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Netgear MA701 CF, SanDisk ConnectPlus CF, Socket Bluetooth CF, 4GB Kingston CF,  4GB pqi SD, 4GB ChoiceOnly SD, 2GB SanDisk SD USB Plus, 1GB SanDisk USB Plus, 1GB Transcend SD, 2GB SanDisk MicroSD with SD adaptor, Piel Frama Leather Case, GoldX 5-in-1 USB cable, USB hub, USB mouse, USB keyboard, USB ethernet, USB HDD, many other USB accessories...
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koen

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Sd Card Very Slow Oz 3.5.4.1
« Reply #7 on: February 01, 2007, 01:44:43 am »
Quote
Quote
The "async" option was indeed the solution! (actually async is the default so deleting the sync option from /etc/fstab is enough).
Stupid of me not to think of it.
Thanks everybody.

Shouldn't async be the default?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153092\"][{POST_SNAPBACK}][/a][/div]

yeah I reckon. it annoyed the hell out of me when it took ages to copy a tiny file....
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153162\"][{POST_SNAPBACK}][/a][/div]

We've had too many users pulling out sd cards when they thought it was 'done', but linux has still copying files behind their backs. Users love data-loss
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speculatrix

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Sd Card Very Slow Oz 3.5.4.1
« Reply #8 on: February 01, 2007, 05:27:10 am »
Quote
We've had too many users pulling out sd cards when they thought it was 'done', but linux has still copying files behind their backs. Users love data-loss
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153164\"][{POST_SNAPBACK}][/a][/div]

surely they should know to use the eject function in the applet?
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Meanie

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Sd Card Very Slow Oz 3.5.4.1
« Reply #9 on: February 01, 2007, 06:05:06 am »
Quote
Quote
We've had too many users pulling out sd cards when they thought it was 'done', but linux has still copying files behind their backs. Users love data-loss
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153164\"][{POST_SNAPBACK}][/a][/div]

surely they should know to use the eject function in the applet?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153186\"][{POST_SNAPBACK}][/a][/div]

It doesn't work in the latest version of OZ
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Netgear MA701 CF, SanDisk ConnectPlus CF, Socket Bluetooth CF, 4GB Kingston CF,  4GB pqi SD, 4GB ChoiceOnly SD, 2GB SanDisk SD USB Plus, 1GB SanDisk USB Plus, 1GB Transcend SD, 2GB SanDisk MicroSD with SD adaptor, Piel Frama Leather Case, GoldX 5-in-1 USB cable, USB hub, USB mouse, USB keyboard, USB ethernet, USB HDD, many other USB accessories...
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speculatrix

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Sd Card Very Slow Oz 3.5.4.1
« Reply #10 on: February 01, 2007, 06:31:51 am »
Quote
Quote
surely they should know to use the eject function in the applet?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153186\"][{POST_SNAPBACK}][/a][/div]

It doesn't work in the latest version of OZ
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153189\"][{POST_SNAPBACK}][/a][/div]

<koen mode>
did you post to the bugtracker? forums are not bugtrackers
</koen mode>
 
« Last Edit: February 01, 2007, 06:32:17 am by speculatrix »
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Meanie

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Sd Card Very Slow Oz 3.5.4.1
« Reply #11 on: February 01, 2007, 07:14:40 am »
Quote
Quote
Quote
surely they should know to use the eject function in the applet?
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153186\"][{POST_SNAPBACK}][/a][/div]

It doesn't work in the latest version of OZ
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153189\"][{POST_SNAPBACK}][/a][/div]

<koen mode>
did you post to the bugtracker? forums are not bugtrackers
</koen mode>
 
[div align=\"right\"][a href=\"index.php?act=findpost&pid=153191\"][{POST_SNAPBACK}][/a][/div]

of course I logged a bug against it in one or two of their many bug tracking systems, but ....
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SL-C3000 - pdaXii13 build5.4.9 (based on pdaXrom beta3) / SL-C3100 - Sharp ROM 1.02 JP (heavily customised)
Netgear MA701 CF, SanDisk ConnectPlus CF, Socket Bluetooth CF, 4GB Kingston CF,  4GB pqi SD, 4GB ChoiceOnly SD, 2GB SanDisk SD USB Plus, 1GB SanDisk USB Plus, 1GB Transcend SD, 2GB SanDisk MicroSD with SD adaptor, Piel Frama Leather Case, GoldX 5-in-1 USB cable, USB hub, USB mouse, USB keyboard, USB ethernet, USB HDD, many other USB accessories...
(Zaurus SL-C3000 owner since March 14. 2005, Zaurus SL-C3100 owner since September 21. 2005)
http://members.iinet.net.au/~wyso/myZaurus - zBook3K
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