FFS optimizations with dirhash, as blogged by rsadowski@

Rafael Sadowski (rsadowski@),OpenBSD developer and prolific blogger,has been looking into file system performance optimizations on our favoriteoperating system, and is now sharing his tips and tricks inFFS optimizations with dirhash on his blog.

He leads in with a TL;DR:

tl;dr

Consider playing with sysctl vfs.ffs.dirhash_maxmem to increase the maximum dirhash cache.

That said, it is worth your time toread the whole thing!