On Thu, 19 Jun 2014 06:21:46 -0400, Charles Elliott <[email protected]> wrote:
AKv8c_Bb_r1846_winx86_AVXx.exe experiences about 19-23,000 page faults per second, for a total of 19 to 50 million page faults per run. This is not a problem on my computer as the page faults cause no disk transfers; all desired pages are apparently held in stand-by memory. Nevertheless it may increase the process overhead due to the 19-23,000 transitions back and forth to kernel mode. Except for possibly EVGAPrecision.exe and MsMpEng.exe (Windows Defender, I believe), no other process in my system has anything like this number of page faults Do you have any idea what the cause of these page faults could be? Could it be due to shared DLL's or more likely the allocation of large memory buffers? Charles Elliott
The cause is the FFTW type 2 DCT used by SETI@home for the Autocorrelation search. See the discussion starting with Pepo's observation in April 2011 at SETI Beta[1]. FFTW is also used by my AKv8c builds. [1] http://setiweb.ssl.berkeley.edu/beta/forum_thread.php?id=1831&postid=40514 -- Joe _______________________________________________ boinc_dev mailing list [email protected] http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev To unsubscribe, visit the above URL and (near bottom of page) enter your email address.
