Le 10 janv. 2017 12:45 AM, "Jakov Sosic" <[email protected]> a écrit :
Hi guys, I'm wondering what is the highest number of executors on a single jenkins master instance that you have seen? What number of executors is some kind of theoretical maximum for Jenkins, and are there any information at which number Master gets overwhelmed? I'm currently running single master, with 360 executors on 3 slaves, but am getting executors starvations from time to time. That, I think, is not good. But is not a Jenkins issue. More engineering and isolation issue: what tasks are you running? By experience you should try and target 1 agent=1 executor. But it really depends on tasks you're running. Bottom line being: not worth the engineering time to diagnose issues when many big builds together at the wrong time will basically kill the whole machine. Better isolate with dedicated VMs per agent. I was thinking of battling it with dynamic slaves, but I've heard that it's not very good idea to run more then 100 executors per a single Jenkins master instance. No. That is wrong. Curious where you heard that. I regularly see masters with hundreds of agents. One thing that can arise on big configs is the GC misconfiguration (the JVM defaults to parallel GC, which is basically a very unfortunate choice for user facing apps like Jenkins masters, or any webapp really. Only suited for batches...). For example resulting in long freezes from a user standpoint. We cannot unfortunately improve that where ppl are running the war directly but there's work ongoing to choose better defaults for other packagings (thanks Sam!) See Stephen's talk, where basically he played with many definitions of "the biggest cluster in the world" :) What are your thoughts / experiences with this? Thanks, Jakov -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/ms gid/jenkinsci-users/ab321ca7-e682-fc43-53c3-20292194ba7b%40gmail.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/CANWgJS4vFJFyzSuVMv6HUcFsA1OZubR6sz9bTtOOaSjo%3D0jhjA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
