On Sat, 23 Jan 2010 11:19:36 -0600, David Morgan <dmor...@aechelon.com> wrote: > 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.
Hope you will find something because I already have reported this but with no success. My QuadCore 3.GHz with 4GB feels like an old 386 when running cygwin on Windows 7 64 bits! -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple