Affinity bug
Eröffnet am: 2017-01-06 03:31
Letztes Update: 2017-01-06 03:31
| Auswertung: | (Anonym) | Verantwortlicher: |  hiyohiyo |
|---|---|---|---|
| Priorität: | 6 | Meilenstein: | (Keine) |
| Typ: | Fehler | Schweregrad: | 6 |
| Komponente: | (Keine) | Status: | Offen [Owner assigned] |
| Lösung | Keine |
Einzelheiten
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)
ashafranov@hotmail.com
Kommentar
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.
cj.tsai(at)yandex.com