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Everything Else => General Support and Discussion => Zaurus General Forums => Archived Forums => Accessories => Topic started by: zxerx on July 04, 2004, 07:45:45 am

Title: How fast is your CF/SD card?
Post by: zxerx on July 04, 2004, 07:45:45 am

I'd been looking to purchase a 512Mb SD card for a while and the thread Preferred SD Card (https://www.oesf.org/forums/index.php?showtopic=4596) got my interest

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I found a few Toshiba 512 MB SD cards selling for around $90 ( http://www.pricewatch.com/1/226/5642-1.htm (http://www.pricewatch.com/1/226/5642-1.htm) ).

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I think I'm gonna buy one......

I got the card yesterday.

I have to eat my words from an earlier post because this thing is made in Taiwan, not Japan. In any case, I was keen to see how it would perform against my 10Mb/sec Hagiwara SD card, so I ran a few rudimentary tests. I also ran the tests on my 40x PQI 256Mb CF card to see how it compared. All the tests were done in my SL-C760.

Title: How fast is your CF/SD card?
Post by: Xumbi on July 19, 2004, 06:02:37 pm

Any idea where I could find the 'time' program?  It looks like it doesn't come with busybox or the default OZ 3.2 setup.

Title: How fast is your CF/SD card?
Post by: stnkypaperweight on July 19, 2004, 07:14:12 pm

So far:

Sandisk SD 1 GB mounted (rw) and formatted fat32:

Code: [Select]

$ time dd if=/dev/zero of=zeros bs=1024 count=230400; time sync
230400+0 records in
230400+0 records out

real    2m38.838s
user    0m0.190s
sys     0m43.320s

real    0m1.291s
user    0m0.000s
sys     0m1.210s
Magicstor 2.2 GB mounted (rw,noatime) and formatted fat32:

Code: [Select]

$ time dd if=/dev/zero of=zeros bs=1024 count=230400; time sync
230400+0 records in
230400+0 records out

real    1m43.600s
user    0m0.550s
sys     0m18.010s

real    0m0.469s
user    0m0.000s
sys     0m0.180s
gotta get back to work... maybe I'll run bonnie later  

Title: How fast is your CF/SD card?
Post by: Miami_Bob on July 20, 2004, 07:33:59 am

Might also want to see

https://www.oesf.org/forums/inde...4&hl=card+speed (https://www.oesf.org/forums/index.php?showtopic=3944&hl=card+speed)


or similar info

Title: How fast is your CF/SD card?
Post by: cekin on August 27, 2004, 10:41:01 am

Code: [Select]

               ---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek-
                -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)-
Card          MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU   /sec %CPU
PNY     SD   100   683 38.8   966 91.6   629 64.2   869 77.4  1472 60.5   43.7 91.6The card is PNY SD 512MB from CompUSA @ 80$ (sales). Test done on C860/Sharp 1.10.

When watching movies (encoded well below 1 Mbit/s) with Kino2 0.2 from that card there are clear regular stops every few seconds, as if either the transfer slowed down, or the CPU was overloaded. This happens more often with MPEG-1 (.mpeg files) than MPEG-4 or DIVX3 (in AVI/WMV container) :-/