On 04/02/15 18:00, Robert Watson wrote:
On Thu, 2 Apr 2015, Mateusz Guzik wrote:
If you carefully read the thread I referred to, you would notice that
on many arches, save amd64 and i386, all systems stats are prone to
mangling the stats due to migration within PCPU_INC. Look here:
grep '^#define PCPU_ADD' sys/*/include/pcpu.h
Do we have reports on not precise enough statistics, yet?
How many non-x86 installations with multiple cpus and high traffic are
out there?
Not sure if this was a rhetorical question or not, but: quite a few. We
have support for several highly threaded 64-bit MIPS systems including
those from Cavium and Broadcom (was NetLogic Micro was RMI). Several
reference systems are in the netperf cluster including 16- and 32-thread
systems normally deployed in high-performance network products. It's
possible that ARMv8 systems will gradually displayce 64-bit MIPS systems
in this arena in the future, but hard to say. Either way, it's not x86.
:-)
Hi,
I've sketched up my proposal here, please have a look.
https://reviews.freebsd.org/D2211
--HPS
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
