haproxy/include
Your Name 1e237d037b MINOR: plock: use an ARMv8 instruction barrier for the pause instruction
As suggested by @AGSaidi in issue #958, on ARMv8 its convenient to use
an "isb" instruction in pl_cpu_relax() to improve fairness. Without it
I've met a few watchdog conditions on valid locks with 16 threads,
indicating that some threads couldn't manage to get it in 2 seconds. I
never happened again with it. In addition, the performance increased
by slightly more than 5% thanks to the reduced contention.

This should be backported as far as 2.2, possibly even 2.0.
2020-11-29 14:53:33 +01:00
..
haproxy REORG: tcpcheck: Move check option parsing functions based on tcp-check 2020-11-27 10:30:23 +01:00
import MINOR: plock: use an ARMv8 instruction barrier for the pause instruction 2020-11-29 14:53:33 +01:00