On Fri, Sep  2, 2022 at 16:21:51 +0200, Paul Gevers wrote:

> > > On 11-07-2022 15:14, Julien Cristau wrote:
> > > > What are the specs of these hosts?
> > > 
> > > We have m5a.large instances with Amazon:
> > > https://aws.amazon.com/ec2/instance-types/m5/
> > > 
> > > M5a and M5ad instances feature AMD EPYC 7000 series processors with an all
> > > core turbo clock speed of 2.5 GHz. The AMD-based instances provide
> > > additional options for customers that do not fully utilize the compute
> > > resources and can benefit from a cost savings of 10%. With M5ad instances,
> > > local NVMe-based SSDs are physically connected to the host server and
> > > provide block-level storage that is coupled to the lifetime of the 
> > > instance.
> > > 
> > > vCPU      Memory (GiB) Instance Storage (GB) Network Bandwidth (Gbps)     
> > > EBS
> > > Bandwidth (Mbps)
> > > 2         8            EBS-Only              Up to 10     Up to 2,880
> > > 
> > > > How long are tests allowed to take?
> > > 
> > > 10000 seconds, i.e. 2 hours and 47 minutes.
> > > 
> > Hmm.  Looking at
> > https://ci.debian.net/packages/m/mercurial/unstable/amd64/ some of the
> > runs seem to finish in under 10 minutes, others take over 2 hours (but
> > end up passing anyway).  Are all instances the same?  Most of the "fast"
> > runs seem to be on ci-worker13.
> 
> As I mentioned in my original report, I noticed the same about the passing
> tests and I said ci-worker13 is a completely different beast. All instances
> *except* ci-worker13 are the same, the one I mentioned above. ci-worker13 is
> an m3.large.x86 host at equinix:
> https://metal.equinix.com/product/servers/m3-large/
> 
How fast is the storage on the aws hosts?  It looks like EBS has a
number of variations with different characteristics, and the hg
testsuite is probably quite dependent on that.  It might also be
interesting to see how it does when running in a tmpfs (or at least with
/tmp on a tmpfs).

Cheers,
Julien

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