From: Zach Saw <zach.saw@gmail.com>
To: cygwin@cygwin.com
Subject: Re: App runs 8x slower on dual core machine (with test case to replicate issue)
Date: Thu, 09 Aug 2012 13:03:00 -0000 [thread overview]
Message-ID: <CAFY+UmXTEv1Wc6gfubei0TZO+VCAqeBTSRJBAep79ofiht_oyg@mail.gmail.com> (raw)
Unfortunately, I'm not paid to minimize test cases for Cygwin.
It already took me quite some time to create the test case to
demonstrate a multicore issue in Cygwin.
And Boost 1.48.0 that I used is officially released as part of Cygwin
(i.e. Cygwin patched - which is different from official Boost).
Another finding - When under WOW64 (Win7-64-bit), the test case fails
(i.e. runs slow) regardless of CPU affinity.
I already found that I could set CPU affinity to fix the issue, so I'm good.
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next reply other threads:[~2012-08-09 12:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-09 13:03 Zach Saw [this message]
-- strict thread matches above, loose matches on Subject: below --
2012-08-09 8:17 Zach Saw
2012-08-09 9:22 ` Corinna Vinschen
2012-08-10 3:39 ` Zach Saw
2012-08-10 3:45 ` Daniel Colascione
2012-08-10 4:04 ` Zach Saw
2012-08-10 16:37 ` Andrew DeFaria
2012-08-11 1:14 ` Zach Saw
2012-08-11 2:32 ` Christopher Faylor
2012-08-10 3:52 ` Larry Hall (Cygwin)
2012-08-10 4:10 ` Zach Saw
2012-08-10 3:56 ` Linda Walsh
2012-08-10 4:13 ` Zach Saw
2012-08-10 6:31 ` Zach Saw
2013-01-22 4:51 ` Zach Saw
2013-01-22 8:51 ` Corinna Vinschen
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