Re: Cached file read performance

2006-12-23 Thread Attilio Rao
2006/12/23, David Xu <[EMAIL PROTECTED]>: On Saturday 23 December 2006 03:29, Alexander Leidinger wrote: > I want to point out http://www.freebsd.org/projects/ideas/#p-memcpy > here. Just in case someone wants to play around a little bit. > > Bye, > Alexander. I have read the code, if a buffer

Re: Cached file read performance

2006-12-23 Thread Bruce Evans
On Sat, 23 Dec 2006, I wrote: The problem becomes smaller as the read block size appoaches the file system block size and vanishes when the sizes are identical. Then there is apparently a different (smaller) problem: Read size 16K, random: %%% granularity: each sample hit covers 16 byte(s) for

Re: Cached file read performance

2006-12-23 Thread Bruce Evans
On Sat, 23 Dec 2006, Mark Kirkwood wrote: Bruce Evans wrote: None was attached. (meaning the c prog yes?) I notice that it is stripped out from the web archive... so here's a link: http://homepages.paradise.net.nz/markir/download/freebsd/readtest.c However, I couldn't see much differe