CircuitBuildTimeout Management and the Pareto Distribution
cav at gotadsl.co.uk
Mon Jul 26 22:33:22 UTC 2010
Thanks Mike !
With kind regards,
Mike Perry wrote:
> Thus spake Cav (cav at gotadsl.co.uk):
>> Hi Mike,
>> Thanks for a quick reply. Maybe its my warped mind that had me consider
>> that the management of timeouts (sliding the timeout up and down - as it
>> appears in the logs) would affect the distribution of timeouts and
>> therefore the pareto distribution around them.
>> I will admit to experimenting with smaller values of
>> CBT_DEFAULT_QUANTILE_CUTOFF. These lead to 'peaks' in the timeout
>> distribution. The smaller the value, the tighter these 'peaks' seem to be.
> This should not be the case in 0.2.2.14 and above. Changing the
> QUANTILE_CUTOFF default should now only govern which circuits you
> actually use. Circuits should continue to build until
> CBT_DEFAULT_CLOSE_QUANTILE, so the distribution of recorded buildtimes
> will be much more insenitive to changes in the timeout value.
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