[U-Boot] USB storage performance EHCI question

Wolfgang Denk wd at denx.de
Thu Jan 13 07:09:16 CET 2011


Dear Aaron Williams,

In message <201101121955.04367.Aaron.Williams at caviumnetworks.com> you wrote:
> I just got EHCI support working with our chip and I was wondering what sort of 
> performance I could expect using ext2?  Right now it seems extremely slow 
> coming off of a fast solid-state drive. I'm getting around 100KB/second. It's 
> running at full-speed (480Mbps). Is this normal?

As you don't provide any of the important information let me guess:
this is on an ARM board, and you are using U-Boot version v2010.09 or
older?  If this is true then yes, this is to be expected.

Hm... I just notice the "caviumnetworks" in your address, so this is
probably MIPS?  Check if your caches are turned on...

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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