On Tue, 30 Aug 2022 at 14:16, Mikolaj Izdebski <mizde...@redhat.com> wrote:
> On Thu, Aug 25, 2022 at 9:53 AM Miro Hrončok <mhron...@redhat.com> wrote: > > To submit more scratch builds we would need larger builder capacity. > This doesn't necessarily mean more or better hardware. > Better Koji configuration would help a lot. > We have some very powerful builders with up to 224 processors, but > their capacity is set to 2. > This means that the builder stops accepting new tasks once load gets > to 2, which is less than 1 %. > > Example buildhw-a64-20.iad2.fedoraproject.org > Capacity is 2, check with: koji hostinfo > buildhw-a64-20.iad2.fedoraproject.org > 224 CPUs, load average: 2.04, 2.07, 2.05 > memory: 251Gi total, 7.3Gi used, 242Gi available > Yet, at the time of writing the builder is marked as not ready (!!) > for taking more builds due to exceeded capacity. > > This is not an individual case, we have many builders like that. > > I believe there are 2 builders with 224 CPU's. They are both 'prototype' aarch64 systems we got on loan from a vendor and are tempermental. They do not have good disk IO and do not have the capability of increasing the disk IO. This means that you have a very very fast cpu and slow as treacle disk io. The network on them has also been 'fun' where if the net access got too high, it would require a complete power cycle with the plugs pulled out because the BMC is not licensed. Most of the 'big' builders I remember are similar in hardware.. They look great on paper, but if you try to give them a large capacity you end up with even slower builds because they are loaners or spares which are good for specific workloads and not general usage. -- Stephen Smoogen, Red Hat Automotive Let us be kind to one another, for most of us are fighting a hard battle. -- Ian MacClaren
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