<div dir="ltr"><div>I seem to recall reading in a book cerca Solaris 10 about the kernel internals that it supported UNSIGNED SMALL INT (about 65k) cores but I am having a hard time finding anything to back that up and I gave that book away in a donation pile many years ago so I can't double check easily.</div><div><br></div><div>I know my loose recollection isn't that helpful but it jives with the other folks suggesting that the limit is way higher than BSD :)<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jan 8, 2021 at 12:01 PM Chris <<a href="mailto:oidev@bsdos.info">oidev@bsdos.info</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 2021-01-08 08:39, Andreas Wacknitz wrote:<br>
> Am 08.01.21 um 17:15 schrieb Chris:<br>
>> On 2021-01-08 01:17, Joshua M. Clulow via oi-dev wrote:<br>
>>> On Thu, 7 Jan 2021 at 23:53, Chris <<a href="mailto:oidev@bsdos.info" target="_blank">oidev@bsdos.info</a>> wrote:<br>
>>>> I'm looking to help building packages. Both current, as<br>
>>>> well as newer versions. I have a large server farm. But<br>
>>>> primarily BSD based. As such I'm looking into a new build<br>
>>>> box, based on an Opteron or Xeon. So before I take the<br>
>>>> plunge. I was hoping to add as many CPU/cores as possible.<br>
>>>> Which begs the question: haw many CPUs does OI support?<br>
>>> <br>
>>> I don't think you'll be able to buy a machine with more CPUs than we<br>
>>> support in illumos. I've personally used older HP machines with 4 CPU<br>
>>> sockets and thus a lot of cores, and modern AMD systems which have a<br>
>>> still surprising number of cores in one or two packages.<br>
>>> <br>
>>> In the unlikely event that you hit a problem based on core count, I am<br>
>>> sure it will just be a bug that can be fixed.<br>
>> OK so 4 sockets @16 cores/ea, or 2 sockets @64 cores/ea won't be a<br>
>> problem then.<br>
>> Thanks for the reply! :-)<br>
>> Time to go shopping.<br>
>> <br>
>> <br>
>> --Chris<br>
>>> <br>
>>> <br>
>>> Cheers.<br>
>> <br>
> Tell us when your server exceeds 384 Cores / 3072 Threads. AFAIK that's<br>
> what actual Fujitsu/Oracle M12 provide at max. :D<br>
Sweeeeeet! :-)<br>
TBH the only reason I brought it up was that we had a similar question on<br>
one of the FreeBSD lists. Where they had difficulty exceeding 96 on a 128.<br>
I've forgotten whether it turned out to be config of (actual) limitation.<br>
Mind you that was BSD. But given the shared heritage, it seemed an<br>
appropriate question.<br>
Thanks for the stats. Maybe I should give Fujitsu a look. :-)<br>
<br>
--Chris<br>
> <br>
> <br>
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<br>
-- <br>
~40yrs of UNIX and counting<br>
<br>
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</blockquote></div>