Ticket #36921

Open Date: 2017-01-06 03:31

Last Update: 2017-01-06 03:31

Affinity bug

Component:(None)Status:Open [Owner assigned]


Please, add the -n parameter to the diskspd command line when 1 thread benchmark is started; this is the way one thread applications run; otherwise the benchmark will be set to run on the CPU 0 (default affinity)

-n disable default affinity (-a)


Attachment File

Attachment File ListNo attachments
Add New attachment
Add attachment filesPlease login to add new attachment

Ticket History - 2/2 Histories

2017-01-06 03:31 Updated by: None

  • New Ticket "Affinity bug" created

2017-05-25 15:55 Updated by: None


This may be what the original poster found.

This happens only in Windows 10, single thread test and the size of read/write is small. e.g. a lot of random synchronous read. In this case, set the affinity in fact increases the read/write performance. A closer look at it, the average time of Readfile()/Writefile() is shorter with the affinity set.


Add Comment/Update #36921 (Affinity bug)

You are not logged in. I you are not logged in, your comment will be treated as an anonymous post. » Login