tree 78504370177a37c5dc738e016ab16d4b82b6dc67
parent dc72fbb8e8cb895572c51389e1f8882be0fa89af
author Willy Tarreau <w@1wt.eu> 1631107245 +0200
committer Willy Tarreau <w@1wt.eu> 1631108685 +0200
encoding latin1

OPTIM: vars: only takes the variables lock on shared entries

There's no point taking the variables locks for sess/txn/req/res
contexts since these ones always run inside the same thread anyway.
This patch conditions the lock on the variable's scope to avoid
flushing cache lines when not needed.

This showed an improvement of ~5% on a 16-thread machine with 12
variables.