Differences for win32 versus Linux open() performance

[John Arbash Meinel]

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John Szakmeister wrote:
> On Fri, Jun 5, 2009 at 3:45 PM, John Arbash
> Meinel<john at arbash-meinel.com> wrote:
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>> I'm working on profiling initial commit performance. I ended up creating
>> a tree that has all the files of mysql, but without any content. It
>> still took ~9s to commit.
>>
>> So I started digging further, and I found that *just*:
>>   open(fname, 'rb').close()
>>
>> For 7k files takes 3.6s on win32. On a much older linux sytem, it only
>> takes 0.6s. I assume this is the issues with opening a file locks its
>> path, etc.
> 
> This could partially be because of antivirus tools.  They have a
> tendency to hook a number of system calls, that dramatically slows
> down performance.
> 
> -John
> 

Which is why I don't run any, and instead take a lot more caution wrt
what I download.

John
=:->

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