[Bug 3817] InstallShield very slow when copying many small files

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=3817





------- Additional Comments From dmda at yandex.ru  2007-08-07 17:42 -------
What's about TTL approach?
Say we have read a directory to lookup for a file. Next time we can check if 
the cache is not dirty by applyting TTL logic. If TTL is not expired, we can 
use cache, otherwise it's necessary to refill.
Say with 2 seconds TTL, I'd expect great performance increase. As a bonus, we 
would not need to keep coherency at all. Nothing wrong if one process has 
created a file and another process doesn't see this for 2 seconds. The same is 
for file deletion/rename operations. The only thing needed is critical section 
that will isolate concurent access from different threads.

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