Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-10-01 Thread SZABÓ Gergely
Ciao Marco, I do not think a real /home would help, as I have several colleagues who have a real /home, but still have similar slow performance with cygwin 1.7.x. What kind of ACL issue could this be? And why is it no problem for Cygwin 1.5.25? Anything to do with the new cyglsa.dll? The funny

Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-10-01 Thread Marco Atzeri
--- Ven 1/10/10, SZABÓ Gergely ha scritto: Ciao Marco, I do not think a real /home would help, as I have several colleagues who have a real /home, but still have similar slow performance with cygwin 1.7.x. What kind of ACL issue could this be? And why is it no problem for Cygwin

Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-10-01 Thread Andrey Repin
Greetings, SZABУ Gergely! The funny thing is, The sum of the sys and user times for the fork script is around 1 minute. What happens in the remaining 3 minutes, to make up that terrible time over 4 min? bash-completion? :D Try uninstalling this package entirely. -- WBR, Andrey Repin

Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-10-01 Thread SZABÓ Gergely
I'm aware of the bash-completion issue. I've removed it already. This is a different problem. My login shells don't take 2 minutes to start any more, now it's just a mere 2 seconds. :-) Best regards G -- Problem reports: http://cygwin.com/problems.html FAQ:

R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-09-30 Thread Marco Atzeri
--- Gio 30/9/10, SZABÓ Gergely ha scritto: Hello, we have a Cygwin-based build system for an embedded project. Build performance has deteriorated terribly since we upgraded to 1.7.x from 1.5.25. I've created 3 shell-scripts to benchmark 1.5.25 and 1.7.7 against each other. - null   

Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-09-30 Thread Edward Lam
testing on /tmp/benchmark with XPS P2 cygwin 1.7.8s 20100924 You're testing on the latest snapshot against his cygwin 1.7.7 results. This gives me hope that Cygwin can become faster because Sagi Ben-Akiva was willing to track down the cause of the slowdown [1]. Last I read, it's not clear

Re: R: Cygwin 1.7.7 fork/exec performance MUCH slower than 1.5.25

2010-09-30 Thread Christopher Faylor
On Thu, Sep 30, 2010 at 09:10:48AM -0400, Edward Lam wrote: testing on /tmp/benchmark with XPS P2 cygwin 1.7.8s 20100924 You're testing on the latest snapshot against his cygwin 1.7.7 results. This gives me hope that Cygwin can become faster because Sagi Ben-Akiva was willing to track down