Re: git gc --aggressive led to about 40 times slower "git log --raw"

> David Kastrup <dak@gnu.org> writes:
>
>> Duy Nguyen <pclouds@gmail.com> writes:
>>
>> Something's _really_ fishy about that cache behavior.  Note that the
>> _system_ time goes up considerably, not just user time.  Since the
>> packs are zlib-packed, it's reasonable that more I/O time is also
>> associated with more user time and it is well possible that the user
>> time increase is entirely explainable by the larger amount of
>> compressed data to access.
>>
>> But this stinks.
>
> And an obvious contender for the stinking is that the "LRU" scheme used
> here is _strictly_ freeing memory based on which cache entry has been
> _created_ the longest time ago, not which cache entry has been
> _accessed_ the longest time ago.  Which means a pure round-robin
> strategy for freeing memory rather than LRU.
>
> Let's see what happens when changing this.