0Acelerar Media Browser

Um artigo sobre Hack7MC chamou minha atenção um par de meses atrás, mas eu só agora cheguei a seguinte em cima dele. A idéia é acelerar o plugin para o navegador de mídia para o Media Center, movendo sua biblioteca para um barato USB Flash drive, que esperamos que oferece um desempenho muito melhor do que as unidades de disco rígido normais. The first thing I did was test a couple of flash-based devices that I have against my desktop HardDrive…

WD Velo­ciRap­tor (300Gig)
ran­dom 4k read = 0.9mb/s
ran­dom 512k read = 57mb/s

Super Tal­ent Pico‑C 8Gig
ran­dom 4k read = 8.2mb/s
ran­dom 512kb read = 34.6mb/s

SanDisk Extreme III SDHC 8Gig
ran­dom 4k read = 4.6mb/s
ran­dom 512kb read = 20.45mb/s

–update
Cor­sair Flash Voy­ager 8Gb
ran­dom 4k read = 8.13mb/s
ran­dom 512kb read = 30.41mb/s

I have been led to under­stand that the 4k meas­ure­ments are the most import­ant val­ues, how­ever I would like an explan­a­tion of why this is the case.

The aver­age file size in my media browser image lib­rary is ~42kb so they are rel­at­ively small files, which I believe is relevant

For com­par­is­on of a lot more pen drives there is a recent review (2009) em Ars Tech­nica

The cor­sair drive from the ars review is cur­rently on ebay for around £16 — I won­der how much of a per­form­ance increase it offers

–update

• The cor­sair drive from the ars review turned out to be frac­tion­ally slower (effect­ively on par with) the Pico‑C
• The aver­age files in my Media Browser lib­rary are now 610kb. They range from 5kb to 2mb.
• USB 2.0 is the­or­et­ic­ally lim­ited to 60mb/s, and in prac­tice seems lim­ited to 30mb/s
• Without USB 3.0, or an intern­al (e.g. SATA) SSD I am skep­tic­al that any real­ist­ic speed-up can be gained with this meth­od. Using an SQL data­base for Media Browser may offer a sub­stan­tial speed up, and the data­base can eas­ily be hos­ted on a RAM drive for an addi­tion­al increase