On 2010-06-17 17:07-0400 Mike Kaplinskiy wrote:
On Thu, Jun 17, 2010 at 4:35 PM, Alan W. Irwin
The issue is that Wine builds of software take roughly a factor of 5 longer than the equivalent Linux builds. This issue appears to be caused mostly by command startup latency. [...] I find the command startup latency depends very much on what X server I am using. Of course, the actual commands I am using (cmake, MinGW make, MinGW gcc, etc.) to build software under wine have nothing to do with X. So I am hoping if I build a stripped down version of wine configured to ignore X and all other systems (sound, etc.) that are not required for builds, then I might achieve the reduced command startup latency that I need.
Before I try that, however, is there some less brute-force way to reduce command startup latency?
To make sure your numbers are somewhat consistent, you might want to do `wineserver -p; wine notepad` before tests to make sure the wineserver is loaded. It should help with timing of a single app startup, but probably won't help in the cmake case.
I don't think I have access to notepad, but I assume that was just your template for any wine app I am timing. I agree timing results depend strongly on what has been previously cached in memory so the startup latency timing tests, I report e.g.,
wine@raven> time wine gcc --version gcc.exe (GCC) 4.5.0 Copyright (C) 2010 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
real 0m0.143s user 0m0.088s sys 0m0.020s
wine@raven> time wine lxxxx wine: cannot find L"C:\windows\system32\lxxxx.exe"
real 0m0.011s user 0m0.004s sys 0m0.008s
wine@raven> time gcc --version gcc (Debian 4.3.2-1.1) 4.3.2 Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
real 0m0.001s user 0m0.000s sys 0m0.004s
are all quoted for the second run of the command with "wineserver -p" running and with "export WINEDEBUG='all'" set. That typical difference between ~150 ms startup latency on wine versus ~1 ms startup latency on Linux is what I need to reduce in order to obtain reasonable build speeds on Wine.
Ideas?
Alan __________________________ Alan W. Irwin
Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); PLplot scientific plotting software package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________
Linux-powered Science __________________________