At last weeks' LPC, there was some interest in my patches for Auto/Lazy
Migration to improve locality and possibly performance of unpinned guest
VMs on a NUMA platform. As a result of these conversations I have reposted
the patches [4 series, ~40 patches] as RFCs to the linux-numa list. Links
to threads given below.
I have rebased the patches atop 3Nov10 mmotm series [2.6.36 + 3nov mmotm].
The patched kernel builds, boots and survives some fairly heavy testing on
an 8 node istanbul x86_64. Under heavy load, I do encounter a race in the
somewhat optional migration cache. Currently this generates a warning and
carries on, but the one migration cache entry and related page is then
wedged. This would need to be resolved.
The series/threads in the order applied:
[PATCH/RFC 0/14] Shared Policy Overview
http://markmail.org/message/trvpl3t7gimvwht6
[PATCH/RFC 0/8] numa - Migrate-on-Fault
http://markmail.org/message/mdwbcitql5ka4uws
[PATCH/RFC 0/11] numa - Automatic-migration
http://markmail.org/message/zik3itmqed65mol2
[PATCH/RFC 1/5] numa - migration cache - core implementation
http://markmail.org/message/xvck7enyezx6chyi
RESEND: [PATCH/RFC 1/5] numa - migration cache - core implementation
http://markmail.org/message/xgvvrnn2nk4nsn2e
resend to add back the patch description missing from 1st attempt.