From: David Morgan <dmorgan@aechelon.com>
To: cygwin@cygwin.com
Cc: mlm@aechelon.com
Subject: Cygwin slow on x64 systems
Date: Sat, 23 Jan 2010 22:32:00 -0000 [thread overview]
Message-ID: <20100123171936.GE23796@err> (raw)
Hello all,
We use cygwin for our build environment, and have observed that
everything runs extremely slow on x64 systems, for versions newer than
approximately 1.5.12 (including 1.7.1). When I run the following command
in BASH,
while true; do date >> file; done
on a 1.5.12 Core II system, I get approximately 100 dates per second.
On a 1.7.1 Nehalem system, I get approximately 15, and it takes several
seconds for Ctrl-C to take effect, whereas it's instantaneous on 1.5.12.
It makes no difference whether I redirect the output or not.
We have found that the problem was introduced somewhere between 1.5.12
and 1.5.24-2. We have not seen any such slowdown on x86 systems.
We have observed this on XP x64, Server 2003 R2 x64, and now (with 1.7.1
only) on Windows 7 x64.
Can anyone recommend how we could profile this to help isolate the problem?
We have vTune and Quantify in-house.
Regards,
David
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next reply other threads:[~2010-01-23 17:21 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-23 22:32 David Morgan [this message]
2010-01-24 2:22 ` Vincent Richomme
2010-04-25 2:41 ` StephenBartlett
2010-04-30 2:37 ` greenup greenup
2010-04-30 3:06 ` NightStrike
2010-04-30 13:58 ` Edward Lam
2010-04-30 15:24 ` Christopher Faylor
2010-08-30 11:23 Sagi Ben-Akiva
2010-08-30 14:26 ` Edward Lam
2010-08-30 16:53 ` Edward Lam
2010-08-31 13:04 ` Sagi Ben-Akiva
2010-08-31 21:36 ` Magnus Holmgren
2010-09-01 17:12 ` Magnus Holmgren
2010-09-01 17:15 ` Eric Blake
2010-09-01 17:27 ` Magnus Holmgren
2010-09-01 17:30 ` Eric Blake
2010-09-01 18:31 ` Daniel Colascione
2010-09-06 11:32 ` Sagi Ben-Akiva
2010-09-06 17:36 ` Christopher Faylor
2010-09-06 17:51 ` Sagi Ben-Akiva
2010-09-01 18:37 ` Christopher Faylor
2010-09-01 19:00 ` Edward Lam
2010-09-01 19:10 ` Christopher Faylor
2010-09-01 20:19 ` Heath Kehoe
2010-09-01 21:21 ` Christopher Faylor
2010-09-02 3:28 ` Yaakov (Cygwin/X)
2010-09-02 5:11 ` Christopher Faylor
2010-09-07 6:12 ` Christopher Faylor
2010-09-07 7:42 ` Christopher Faylor
2010-09-08 15:13 ` Christopher Faylor
2010-09-20 8:55 ` Christopher Faylor
2010-09-20 9:40 ` Yaakov (Cygwin/X)
2010-09-20 9:41 ` Christopher Faylor
2010-09-26 17:38 ` Yaakov (Cygwin/X)
2010-09-26 18:10 ` Christopher Faylor
2010-09-27 1:19 ` Yaakov (Cygwin/X)
2010-09-27 1:36 ` Christopher Faylor
2010-08-31 7:18 Roland Schwingel
2010-08-31 14:19 ` Christopher Faylor
2010-08-31 15:12 ` Edward Lam
2010-08-31 16:48 ` Christopher Faylor
2010-08-31 17:41 ` Magnus Holmgren
2010-08-31 19:23 ` Christopher Faylor
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