[logback-user] FixedWindowRollingPolicy has max 20?

[David Roussel]

Yes, it’s all there in the discussion in those links.

It’s for performance reasons.

On 12 Aug 2014, at 19:51, Dessie K <desmond.kirrane at gmail.com> wrote:

> Thanks,
> 
> Is there a reason max is set to 20. Is there a performance impact or other reason 20 was chosen?
> 
> 
> On Tue, Aug 12, 2014 at 4:49 PM, Gena Makhomed <gmm at csdoc.com> wrote:
> On 12.08.2014 18:16, Dessie K wrote:
> 
> I'm trying to have a large window size 200.
> 
> But noticed it is fixed to max 20:
> 
> https://github.com/qos-ch/logback/blob/master/logback-core/src/main/java/ch/qos/logback/core/rolling/FixedWindowRollingPolicy.java
> 
> Why is 20 the max?
> An is there anyway to force it to use a larger window size?
> 
> subclasses can override it:
> 
> https://github.com/qos-ch/logback/blob/master/logback-core/src/main/java/ch/qos/logback/core/rolling/FixedWindowRollingPolicy.java
> 
> /**
>    * Subclasses can override this method to increase the max window size, if required.  This is to
>    * address LOGBACK-266.
>    * @return
>    */
>   protected int getMaxWindowSize() {
>     return MAX_WINDOW_SIZE;
>   }
> 
> or probably you just need
> http://logback.qos.ch/manual/appenders.html#SizeAndTimeBasedFNATP
> 
> more details in http://jira.qos.ch/browse/LOGBACK-266
> 
> -- 
> Best regards,
>  Gena
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