Does anyone know of any fremantle (or debian) based test suites (ARM compatible) that can benchmark all or some of the following hardware components of our N900's:

* 256MB Mobile DDR: Speed and/or Reliability tests

* BUS: How much data bandwidth there is available to use between the different hardware components at the same time (SGX535, WLAN, Mass storage devices, Sound) - maybe this isnt strictly related to the RAM speed?

* NAND & eMMC: Regular SSD speed tests - sequential & single sector reads / writes

* Micro SD: Same speed tests as for NAND... it may be interesting as well to compare BUS-hogging between NAND, eMMC and Micro SD.



The reason that i find these tests interresting is to find out why some tasks on the N900 causes heavy overload.

Among these tasks i think of the bittorrent clients QtRapids and Transmission that really hogs the N900... they max out at 150-200 KB/s and slows down the system plentyful. this happens both with 3G and WLAN... if the reason is that the eMMC gets IO overloads or just cant handle that speed with small random sector writes it would be interresting to know if the Micro SD slot could be a candidate for handling such tasks, or if it atleast would prevent slowdowns for the system... of course it may also be that the torrent clients arent code optimized...
another interresting aspect would be if it would be possible to run SSD cache software that puts some of the heavy flash load in RAM and make more efficient use of the NAND/eMMC. Similar software solutions have been made for netbooks with weak SSD's but of course disk cache software isnt 100% data reliable in case of crashes or power outage.

these tests may also be useful to see if there is any relation between the SGX535 V-Sync problems and the BUS... maybe the bus isnt wide enough, or just cant handle enough data throughput. The Sony Vaio P netbooks also use the SGX535 and have a high resolution of 1600x768 (in 24 or 32 bit color?), so there should be enough horsepower to handle the N900's 800x480 without frameskips and V-Sync problems, if there is a proper framebuffer in ram. Iphone 3GS (SGX) dont suffer from these V-Sync problems but on the other hand it only have 480x320 resolution ...maybe this issue only is a matter of drivers.