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Windows Experience Index hard disk assessment error
Posted: Wed Jul 06, 2011 11:52 pm
by bgeneto
I'm using Fancycache for volume 0.6.2 configured for 1536MB (4KB blocks) and deferred write (600s) enabled (see attach, please). Problem is I cannot run the Windows Experience Index hard disk assessment, every time I try the following error arises:
"Failed to properly assess the disk. The data is invalid."
Is the any way to correct this issue in a future fancycache release? Thanks.
Re: Windows Experience Index hard disk assessment error
Posted: Fri Jul 08, 2011 8:59 am
by Support
Thanks for the bug report!
We'll trace this bug soon.
Re: Windows Experience Index hard disk assessment error
Posted: Fri Jul 08, 2011 12:01 pm
by BikeHelmet
I doubt there's an easy way to fix it. WEI is a horribly coded benchmark. It's probably picking up the insane sequential / 4k speeds and figures the results are inaccurate.
Re: Windows Experience Index hard disk assessment error
Posted: Wed Jul 13, 2011 11:33 am
by sparkler
well it wouldn't be a very accurate windows experience if it actually worked
Re: Windows Experience Index hard disk assessment error
Posted: Thu Sep 15, 2011 2:18 am
by Support
Well, this issue is not solvable. Windows Experience Index relies on the disk's feedback data to evaluate the disk performance. When FancyCache (Volume Edition) is enabled with Defer Write, the test data goes to the cache instead of the physical disk. The physical disk receives no data so nothing reported to the WEI. This leads to WEI failure.
However the Disk Edition can pass the WEI.
Later we'll provide a detailed report on it.