On Tue, 2011-09-13 at 10:52 -0500, Jeffrey Bastian wrote:
On 2011-09-13 10:18, Mark Salter wrote:
> These numbers are for SD card in an mmc slot, right? I wouldn't expect
> the patch to the USB EHCI driver to have any effect on SD card speed.
Oh, you're right. I ran bonnie++ against a USB hard drive and it shows
a whopping improvement!
I've edited my blog post and added the USB hard drive numbers:
> The big write performance hits are worrisome, though. I'd be good to
> test on one kernel version with and without the patch just to make sure.
> Also comparing SD performance with and without nosmp passed on cmdline
> would be interesting.
Okay, so I should run 8 tests?
patch smp sd-card
patch smp usb-hd
patch nosmp sd-card
patch nosmp usb-hd
no-patch smp sd-card
no-patch smp usb-hd
no-patch nosmp sd-card
no-patch nosmp usb-hd
I already have a good idea what the results will look like for usb, so
just the other four with sd-card.