From: Karsten Blees Date: Tue, 22 Oct 2013 15:40:08 GMT Subject: Re: Re: Windows performance / threading file access Message-ID: <52669C58.4020801@gmail.com> In-Reply-To: Am 22.10.2013 16:49, schrieb Sebastian Schuberth: > On Tue, Oct 22, 2013 at 4:30 PM, Karsten Blees wrote: > >>>> Could you post details about your test setup? Are you still using >>>> WebKit for your tests? >>> I'm on Win7 x64, Core i5 M560, WD 7200 Laptop HDD, NTSF, no virus >>> scanner, truecrypt, no defragger. >>> >> >> OK, so truecrypt and luafv may screw things up for you (according to my measurements, luafv roughly doubles lstat times on C:). > > Aren't we disabling UAC / LUAFV on a per-executable basis using > manifests? At least the blog article at [1] suggests that we are in > fact doing it the right way using our script to genera the manifests > [2]. > > Oh but wait, we're not generating a manifest for git.exe itself, only > for executables that contain "setup", "install", "update", "patch" > etc. So maybe having a manifest for git.exe, too, would improve > performance? > Even with UAC disabled in control panel, the luafv.sys driver slows things down on C: (no impact on non-system drives). Procmon shows that with disabled luafv, GetFileAttributesEx is a single FASTIO call. With luafv running, FASTIO fails and is followed by three IRP calls (open, query, close). I haven't tried with UAC enabled, or if disabling virtualization for git.exe has an impact. Karsten -- -- *** Please reply-to-all at all times *** *** (do not pretend to know who is subscribed and who is not) *** *** Please avoid top-posting. *** The msysGit Wiki is here: https://github.com/msysgit/msysgit/wiki - Github accounts are free. You received this message because you are subscribed to the Google Groups "msysGit" group. To post to this group, send email to msysgit@googlegroups.com To unsubscribe from this group, send email to msysgit+unsubscribe@googlegroups.com For more options, and view previous threads, visit this group at http://groups.google.com/group/msysgit?hl=en_US?hl=en --- You received this message because you are subscribed to the Google Groups "msysGit" group. To unsubscribe from this group and stop receiving emails from it, send an email to msysgit+unsubscribe@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.