THx Wido, let me add this to agent.properties template on master, since it's missing, I have no idea where you got it from (perhaps from code that uses it)....
thx On Fri, 9 Nov 2018 at 13:35, Wido den Hollander <w...@widodh.nl> wrote: > > > On 11/9/18 1:33 PM, Andrija Panic wrote: > > Thanks Wido - though I don't seem to be able to find any related setting > > (there is host.overcommit.mem.mb but that is not it - unless you can > > define negative value to it ) ? > > > https://github.com/apache/cloudstack/blob/master/agent/conf/agent.properties > > > > host.reserved.mem.mb=32768 > > That one should be the setting you might want to look at. > > In this case 32G is reserved and not available to CS. > > Wido > > > > > thx > > > > On Fri, 9 Nov 2018 at 13:03, Wido den Hollander <w...@widodh.nl > > <mailto:w...@widodh.nl>> wrote: > > > > > > > > On 11/9/18 12:56 PM, Andrija Panic wrote: > > > afaik not - but I did run once or twice intom perhaps looselym > > connected > > > issue - ACS reports 100% of host RAM (makes sense) asavailable for > VM > > > deployment to ACS - so in 1-2 cases I did run into out of memory > > killer, > > > crashing my VMs. > > > > > > It would be great to have some amount of "reserve RAM" for host OS > > - or > > > simply have PER HOST RAM disableTreshold setting, similar to > > cluster level > > > "cluster.memory.allocated.capacity.disablethreshold", just on host > > level... > > > > > > > > > You can do that already, in agent.properties you can set reserved > > memory. > > > > But I doubt indeed that we need such a limit in ACS at all, why do we > > need to limit the amount of Instances on a hypervisor? > > > > Or at least set it to a very high number by default. > > > > Wido > > > > > On Fri, 9 Nov 2018 at 12:03, Rafael Weingärtner > > <rafaelweingart...@gmail.com <mailto:rafaelweingart...@gmail.com>> > > > wrote: > > > > > >> Do we need these logical constraints in ACS at all? > > >> > > >> On Fri, Nov 9, 2018 at 6:57 AM Wido den Hollander <w...@widodh.nl > > <mailto:w...@widodh.nl>> wrote: > > >> > > >>> > > >>> > > >>> On 11/8/18 11:20 PM, Simon Weller wrote: > > >>>> I think these is legacy and a guess back in the day. It was 50 > > at one > > >>> point and it was lifted higher a few releases. ago. > > >>>> > > >>> > > >>> I see. I'm about to do a test with a bunch of 128GB hypervisors > and > > >>> spawning a lot of 128M VMs. Trying to see where the limit might > > be and > > >>> also stress the VR a bit by loading a lot of DHCP entries. > > >>> > > >>> Wido > > >>> > > >>>> > > >>>> > > >>>> > > >>>> ________________________________ > > >>>> From: Ivan Kudryavtsev <kudryavtsev...@bw-sw.com > > <mailto:kudryavtsev...@bw-sw.com>> > > >>>> Sent: Thursday, November 8, 2018 3:58 PM > > >>>> To: dev > > >>>> Subject: Re: KVM Max Guests Limit > > >>>> > > >>>> Hi all, +1 for higher numbers. > > >>>> > > >>>> чт, 8 нояб. 2018 г. в 16:32, Wido den Hollander <w...@widodh.nl > > <mailto:w...@widodh.nl>>: > > >>>> > > >>>>> Hi, > > >>>>> > > >>>>> I see that for KVM we set the limit to 144 guests by default, > can > > >>>>> anybody tell me why we have this limit set to 144? > > >>>>> > > >>>>> Searching a bit I found this: > > >>>>> https://access.redhat.com/articles/rhel-kvm-limits > > >>>>> > > >>>>> "This guest limit does not apply to Red Hat Enterprise Linux > with > > >>>>> Unlimited Guests. There is no guest limit for Red Hat > Enterprise > > >>>>> Virtualization" > > >>>>> > > >>>>> There is always a limit somewhere, but why do we set it to 144? > > >>>>> > > >>>>> I would personally vote for increasing this to 500 or > something so > > >> that > > >>>>> users don't run into it that easily. > > >>>>> > > >>>>> Also, the log line is printed in DEBUG mode only when a host > > reaches > > >>>>> this limit, so I created a PR to set this to INFO: > > >>>>> https://github.com/apache/cloudstack/pull/3013 > > >>>>> > > >>>>> Any input? > > >>>>> > > >>>>> Wido > > >>>>> > > >>>> > > >>>> > > >>>> -- > > >>>> With best regards, Ivan Kudryavtsev > > >>>> Bitworks LLC > > >>>> Cell RU: +7-923-414-1515 > > >>>> Cell USA: +1-201-257-1512 > > >>>> WWW: http://bitworks.software/ <http://bw-sw.com/> > > >>>> > > >>> > > >> > > >> > > >> -- > > >> Rafael Weingärtner > > >> > > > > > > > > > > > > > > -- > > > > Andrija Panić > -- Andrija Panić
