Reply To: Unzipping Performance

[unknown]

USB is USB. Here are some benchmark with a > 500 MB/s capable SSD.

##### SATA #####

## READ ##

[CODE][root@espressobin ~]# dd if=/dev/sda of=/dev/null bs=1024K count=10000 iflag=direct
10000+0 records in
10000+0 records out
10485760000 bytes (10 GB, 9.8 GiB) copied, 33.5648 s, 312 MB/s

## WRITE ##

[root@espressobin mnt]# dd if=/dev/zero of=test bs=1024K count=5000 oflag=direct
5000+0 records in
5000+0 records out
5242880000 bytes (5.2 GB, 4.9 GiB) copied, 18.6003 s, 282 MB/s

##### USB #####

## READ ##

[root@espressobin ~]# dd if=/dev/sdb of=/dev/null bs=1024K count=10000 iflag=direct
10000+0 records in
10000+0 records out
10485760000 bytes (10 GB, 9.8 GiB) copied, 36.5435 s, 287 MB/s

## WRITE  ##

[root@espressobin mnt]# dd if=/dev/zero of=test bs=1024K count=5000 oflag=direct
5000+0 records in
5000+0 records out
5242880000 bytes (5.2 GB, 4.9 GiB) copied, 21.2763 s, 246 MB/s

I am sorry but this board isn’t as great as it sounds.

* 5V USB powering doesn’t work even though announced differently.
* The CPU isn’t capable of the announced 1.2 GHz – not even with the correct u-boot version.
* USB 3.0 is broken and not thoroughly implemented. UAS doesn’t work and the controller tops out at max 4 devices (root + USB hub = 2 real devices). Also booting won’t work with certain USB hubs due to XHCI brokenness.
* The CPU is VERY slow compared to the XU4 (and where is 32-bit support?!)
* F*ing bright and very annoying LEDs
* Rebooting sometimes freezes the board (after OS exit). Especially amazing when you do not have physical access to the board.
* mPCIE does not work unless the kernel gets patched with a spurious patch. => http://espressobin.net/forums/topic/mini-pcie-slot-not-working/

I was actually planing to replace my XU4 with this board… but no. All I am doing with this board at the moment is using it as a network switch.