Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata

Jamie Lokier
2003-09-11T16:55:24Z

richard.brunner@amd.com wrote:
> Don't worry! I am pretty certain the patch won't impact the
> performance of the 2.6 kernel on processors from other vendors ;-)

is_prefetch() will slow down programs which depend on lots of SEGV
signals: those garbage collectors which use mprotect and SIGSEGV to
track dirty pages.

I wonder how much it will slow them down.

-- Jamie