An old gripe: Reading via mmap stinks

Ivan Voras ivoras at freebsd.org
Fri Jan 15 12:28:07 UTC 2010


Andrew Snow wrote:
> 
> Hi Mikhail, I assume these tests were done on UFS.  Have you tried ZFS? 
> I'm curious to see the results.

I suspect it would be noticably worse :) AFAIK ZFS integration with mmap 
does at least one extra in-memory data copy.



More information about the freebsd-stable mailing list