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On 06.08.2014 23:51, Yuxin Ren wrote:
I did not measure min value. The avg is around 5000 cycs, and my machine is 2.8GHz.
Client and server are in different core.
- - And are these cores on the same socket or on different ones?
- - Are the timestamp counters between these cores synchronized? => To be safe you might want to measure the roundtrip time from client to server and back as then you use the same hardware TSC.
- - Did you disable the usual suspects for System Management Mode interruptions (for instance Legacy USB Support, which is often provided as a feature by your BIOS)?
Bjoern
- -- Dipl.-Inf. Bjoern Doebel Mail: doebel@tudos.org TU Dresden, OS Chair Phone: +49 351 463 38 799 Noethnitzer Str. 46 Fax: +49 351 463 38 284 01187 Dresden, Germany WWW: http://www.tudos.org/~doebel - -- "When the seagulls follow the trawler, it's because they think sardines will be thrown into the sea." (Eric Cantona)