HAProxy devel Multithreading

michaelschefczyk · Mar 8, 2019, 4:36 PM

Dear All,

The HAProxy devel package includes the option to set threads in order to provide more CPU capacity to HAProxy. That option does come with a substantial warning message.

Would anyone be so kind to share experience in this field? Relevant aspects should include ACL and SSL offloading. Does HAProxy really not work upon setting a few threads (e. g., 4 on more powerful 8-12 core CPUs)? Are there other real downsides, such as crashes of HAProxy or the OS or the like?

Regards,

Michael Schefczyk

PiBa · Mar 8, 2019, 6:25 PM

@michaelschefczyk
Recently (26-1-2019) haproxy itself removed the warning from their docs, the package on pfSense should get a little update to remove that warning as well..

"It was mentioned when releasing 1.8 but early bugs have long been
addressed"
http://git.haproxy.org/?p=haproxy.git;a=commit;h=1f672a8162eda18c404c6784dd749b6e061e2e4d

Afaik there are no issues anymore.. (Which in the early days used to included haproxy crashes and hangs spinning at 100% cpu usage of a core..)