[Cbe-oss-dev] ps3vram performance

[Kevin Locke]

On Tue, 2009-09-01 at 01:13 +0300, Siarhei Siamashka wrote:
> How fast is ps3vram supposed to be? [...]
> 
> Also 'dd if=/dev/ps3vram of=/dev/null bs=1M' shows throughput something
> like 29MB/s and this does not look very impressive. Does anybody have
> better performance?  [...]

I hadn't thought to measure it until you asked.  Here's another data
point for you:

North American 40GB Model (CECHG)
PS3 firmware version 2.8.0

# dd if=/dev/ps3vram of=/dev/null bs=1M iflag=direct
245+0 records in
245+0 records out
256901120 bytes (257 MB) copied, 6.52754 s, 39.4 MB/s
# dd of=/dev/ps3vram if=/dev/zero bs=1M oflag=direct
dd: writing `/dev/ps3vram': No space left on device
246+0 records in
245+0 records out
256901120 bytes (257 MB) copied, 13.0163 s, 19.7 MB/s

Cheers,
Kevin