Stunnel - Future plans to use something else?
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I'm not sure about 8.3 but I'm pretty sure that hasn't changed since 8.2.1.
Using ldd on 8.2.1's stunnel binary shows dependencies on libpthread and libwrap so I'm guessing it was compiled with thread and wrapper support.
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JeffBerntsen psafont Additionally it may be worth making sure it's at least version 5.70 though much better and preferred to be version 5.72. As this new version has several major bug and vulnerabilities fixed.
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So it doesn't seem to be an issue: XAPI will spawn multiple stunnel process if needed. XAPI itself is not multithreaded, so the bottleneck might not be stunnel after all.
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olivierlambert said in Stunnel - Future plans to use something else?:
So it doesn't seem to be an issue: XAPI will spawn multiple stunnel process if needed. XAPI itself is not multithreaded, so the bottleneck might not be stunnel after all.
psafont Maybe worth multithreading the XAPI to help its performance, so that when going through stunnel it doesn't act as a bottleneck.
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I think it's a pretty complex issue, but I'm not a XAPI dev, so I can't answer
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@john-c This involves waiting on a stable OCaml 5 version being release, then porting the whole codebase to use the new multithreading APIs, this is a very complex matter, and it will take a long time until it's realised
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And there's maybe easier bottleneck to fix before
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psafont said in Stunnel - Future plans to use something else?:
@john-c This involves waiting on a stable OCaml 5 version being release, then porting the whole codebase to use the new multithreading APIs, this is a very complex matter, and it will take a long time until it's realised
Is there any plans on that or is it already on some kind of roadmap?
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nikade We've already fixed some issues to start using ocaml 5 regarding the C interfaces. Handling threading in ocaml 5 is still an open problem that the ecosystem has not yet solved (there are many libraries competing now). We still need to create a credible strategy to port xapi to the new model, and don't have any timelines yet
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psafont said in Stunnel - Future plans to use something else?:
nikade We've already fixed some issues to start using ocaml 5 regarding the C interfaces. Handling threading in ocaml 5 is still an open problem that the ecosystem has not yet solved (there are many libraries competing now). We still need to create a credible strategy to port xapi to the new model, and don't have any timelines yet
Yea porting it is probably not a bad idea, but I guess that involves the biggest tasks as well
All tho if you port it there might be opportunities to re-do a lot of things that you have been looking to fix for ages.Crossing my fingers that this is something that you get time to do in the near future, there is a real chance here to take a big part of the esxi market as a lot of ppl are migrating.
