filesystem performance with lots of small files

Marian Hettwer MH at
Fri Aug 26 07:43:32 GMT 2005

Hej there,

Claus Guttesen wrote:
>>I didn't changed anything from the defaults... it looks like that:
>>mhettwer at submaster-test$ sysctl vfs.ufs.dirhash_maxmem
>>vfs.ufs.dirhash_maxmem: 2097152
>>mhettwer at submaster-test$ sysctl vfs.ufs.dirhash_mem
>>vfs.ufs.dirhash_mem: 368622
> You could try the following change:
> sysctl vfs.ufs.dirhash_maxmem=8388608
> Did you use the GENERIC-kernel? If so, remember that witness,
> invariants etc. are a part of the RELENG_6-branch. You should disable
> these settings with a custom-build kernel. You may also want to read
> /usr/src/UPDATING.
As I wrote in my first mail, it's basicly a GENERIC Kernel, but without 
debugging options. I read UPDATING :)
afaik, I removed all debugging features from the GENERIC Kernel ...


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