Overrun while recording audio file into SD card using Imx35

[mailbriandavid]

Hi,

   I need to record/write files(maybe large upto 1 gb) into a SD card without any overrun or missing in minimum constant speed of 16 MB/sec.  Is that  possible with using I.MX 35 processor and a class 10 SD card of "sandisk Extreme"? With my I.MX 35 processor, I got overrun.   What all possible ways which i can record audio into SD card with  a minimum constant speed of 16 MB/sec?

Regards,

Brian

[LeonardoSandova]

I am not familiar with imx35, but you can try placing the bootloader on a location which is not the SD card, then indicating the kernel to mount the filesystem on it. If this works, you may have the speed you required.

Leo

[Yuri]

I have some doubts regarding 16 MBytes/sec for SD cards (even of class 10).

To test maximum real write performance, please try the next Linux commands (as an example) :

# mount /dev/mmcblk0p1 /mnt/cdrom

# time nice -n -10 dd if=/dev/zero of=/mnt/cdrom/file.tst bs=1M count=1000