Jira (PUP-9092) External process spawning rate (including "exec" resource) is too slow

[Aristarkh Zagorodnikov (JIRA)]

Title: Message Title

Aristarkh Zagorodnikov updated an issue   Puppet / PUP-9092 External process spawning rate (including "exec" resource) is too slow Change By: Aristarkh Zagorodnikov *Puppet Version: 4.10.5+* *Puppet Server Version: irrelevant* *OS Name/Version: Any supported Windows OS* Running external processes by puppet on Windows is very slow. When applying manifests that contain many "exec" resources, it may take many minutes to apply. When analyzing logs, I took note that even simple "reg query" process took 1.02/1.03 second to run. Windows doesn't spawn processes that slow, I wrote simple example in C# which showed my that ny machine is capable of executing about 140 of such commands per second (no parallelism, waiting for exit of each process before spawning another). I did a little bit of digging and found this [piece of code|https://github.com/puppetlabs/puppet/blob/31cd0aa11218e882c60de416e0f89af7b3c5262b/lib/puppet/util/windows/process.rb#L17]. This code waits for at least one second, unless the process terminated _immediately_ (which is rarely feasible). Replacing `sleep(1)` with `sleep(0)` is the simplest fix, but is not too efficient from a CPU consumption standpoint, so I propose a different fix in a [ PR linked below #7033|https://github . com/puppetlabs/puppet/pull/7033]. *Desired Behavior: Processes are spawned at a rate that is comparable to Windows native rate* *Actual Behavior: Processes are considered to be running at least for 1 second, even if they exit immediately*   Add Comment   This message was sent by Atlassian JIRA (v7.7.1#77002-sha1:e75ca93) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at https://groups.google.com/group/puppet-bugs. For more options, visit https://groups.google.com/d/optout.