Buildbot Performance

Christopher Nielsen mascguy at rochester.rr.com
Mon May 17 22:30:37 UTC 2021


If you total up the memory allocated across all VMs, is there at least one or two GB free for the hypervisor?

> On 2021-05-17-M, at 18:26, Ryan Schmidt <ryandesign at macports.org> wrote:
> 
>> On May 17, 2021, at 07:36, Christopher Nielsen wrote:
>> 
>> As for overcommitment: I’m simply suggesting that we reduce the number of vCPUs per builder, from eight to six.
> 
> And I'm suggesting that doing so will slow things down in those situations when only one or two VMs on a host are busy.
> 
> If I reduce the number of vCPUs from 8 to 6, then there would be 2 GB extra RAM per VM in each server that I could move elsewhere.
> 
>> Otherwise, the formula MacPorts base uses to calculate builds jobs and such is fine as-is, and I’m not advocating that we change it.


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