[logback-user] SizeBasedTriggeringPolicy + RollingFileAppender bizarrely slow in certain cases on Windows

Ceki Gulcu ceki at qos.ch
Tue Oct 24 04:45:42 CEST 2017

Hi Mark,

Thank you for your last two posts.

The small ShowLogSlowness.java stand alone java application makes it 
easy to understand the problem. I found it very helpful.

As a wise man once said,  "It's always the anti-virus." :-)

Glad the problem has been diagnosed properly. Nice work.



On 23.10.2017 17:58, mpderbec wrote:
> Hey folks, this turned out to be the fault of Windows Defender, the
> anti-virus capability built into Windows. Read more here if you're
> interested:
> https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/2c21d5ce-2278-4ce0-8487-33f8ab9ec1cb/kernel32s-getfileattributesexw-bizarrely-slow-based-on-the-content-of-a-file?forum=windowsgeneraldevelopmentissues
> We're going to investigate how to add ourselves to an exclusion list for
> Windows Defender.

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