Talk:RPi Performance

Section on boot times?
How about a section with a list of boot times, for various distros, SD cards, with/without booting to GUI, etc? FlyingLotus1983 02:56, 4 August 2012 (UTC)
 * According to me that seems a good idea. Jukimatori 12:47, 5 August 2012 (UTC)

SD card benchmarking
New test procudure for SD cards needed?

Write tests should include time which is needed to write all data into card (=sync) And before read tests file cache should be cleared.

Now people have two memory sizes which means that more ram is available for cache therefore results will be different with old and new model.

dd if=/dev/zero of=~/test.tmp bs=500K count=1024 time sync sudo sh -c "echo 1 > /proc/sys/vm/drop_caches" dd if=~/test.tmp of=/dev/null bs=500K count=1024 sudo rm /mnt/test.tmp time sync

1024+0 records in 1024+0 records out 524288000 bytes (524 MB) copied, 44.8961 s, 11.7 MB/s

real   0m7.981s user   0m0.000s sys    0m0.000s 1024+0 records in 1024+0 records out 524288000 bytes (524 MB) copied, 26.4597 s, 19.8 MB/s

real   0m1.555s user   0m0.000s sys    0m0.000s --- 1024+0 records in 1024+0 records out 524288000 bytes (524 MB) copied, 43.6373 s, 12.0 MB/s

real   0m12.007s user   0m0.000s sys    0m0.000s 1024+0 records in 1024+0 records out 524288000 bytes (524 MB) copied, 26.012 s, 20.2 MB/s

real   0m1.977s user   0m0.000s sys    0m0.000s --- 1024+0 records in 1024+0 records out 524288000 bytes (524 MB) copied, 48.3281 s, 10.8 MB/s

real   0m8.183s user   0m0.000s sys    0m0.000s 1024+0 records in 1024+0 records out 524288000 bytes (524 MB) copied, 26.8685 s, 19.5 MB/s

real   0m2.547s user   0m0.000s sys    0m0.000s