Re: Cygwin Filesystem Performance degradation 1.7.5 vs 1.7.7, and methods for improving performance

2010-09-12 Thread Corinna Vinschen
On Sep 12 13:41, Corinna Vinschen wrote: > On Sep 12 10:49, Yoni Londner wrote: > > Hi, > > > > The caching-speed up is trivial: > > We store the the FileFullDirectoryInformation fields, and if any of > > them change - we re-read the file. > > > > Its not (in practical life) possible to change a

Re: Cygwin Filesystem Performance degradation 1.7.5 vs 1.7.7, and methods for improving performance

2010-09-12 Thread Corinna Vinschen
On Sep 12 10:49, Yoni Londner wrote: > Hi, > > The caching-speed up is trivial: > We store the the FileFullDirectoryInformation fields, and if any of > them change - we re-read the file. > > Its not (in practical life) possible to change a file without > causing a modification on > FileIndex/Cre

Re: Cygwin Filesystem Performance degradation 1.7.5 vs 1.7.7, and methods for improving performance

2010-09-12 Thread Yoni Londner
Hi, The caching-speed up is trivial: We store the the FileFullDirectoryInformation fields, and if any of them change - we re-read the file. Its not (in practical life) possible to change a file without causing a modification on FileIndex/CreationTime/LastWriteTime/ChangeTime/EndOfFile/Alloca