Description:
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Hello,

It is good to have the apc.stat=0 for performance reasons. This option makes huge performance difference in my server. The load goes down from 200 to 2!

However, while this option is good where the files are not changed very often. It eventually causes some convenience problems. For example on shared hosting, we can not give restart or cache purge capabilities to customers and I am sure that customers wouldnt want to do that manually anyway.


So, what about a semi-nostat feature with an expiration? Cache the file, put a user settable timer for the file and do not stat the file again until timer expires.


For example, if I have the timer set to 60seconds and the file foo.php is cached, the xcache serves the file without any further stat checks for 60 seconds. Then makes a stat check. In 60 seconds there could have been 1000 accesses to file but we get away with 1 stat check every 1000 accesses, without the need of manual purge.


Perhaps even the old apc.stat variable can be replaced and the timer can be used instead?


For eample:

apc.stat_exp_timer = 0   <- always do stats check
apc.stat_exp_timer > 0   <- wait for the given seconds before doing another stats check.
apc.stat_exp_timer = -1  <- never do a stats check.


What do you think?


Thanks,
Evren