DOC: config: provide some configuration hints for "http-reuse"

This adds some configuration hints regarding various workloads that do
not manage to achieve high reuse rates due to too low a global maxconn
or thread groups.

This fixes github issue #1472.

(cherry picked from commit 44fce8bd73cc743afc7e7f3f70a5a177a9557e62)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit e3bafd59809a6647c5e2d8950ab0ca50b2dd5d12)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 200559b929da4643866a39397b4a985af5466300)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed