Re: Re: Windows performance / threading file access
Am 22.10.2013 16:49, schrieb Sebastian Schuberth:
Show 20 quoted lines
> On Tue, Oct 22, 2013 at 4:30 PM, Karsten Blees <karsten.blees@gmail.com> 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.
Karsten Blees <karsten.blees@gmail.com>