[smartos-discuss] Re: New host and CPU question

2016-12-01 Thread Len Weincier
Just to add to this. The issue is happening in an LX zone. SmartOS image is 20160915T211220Z Thanks Len On 1 December 2016 at 18:17, Len Weincier wrote: > Hi all > > Is there any issues with these cpu's and smartos - "Intel(R) Xeon(R) CPU > E7-4850 v4 @ 2.10GHz" ? > > We

Re: [smartos-discuss] Re: New host and CPU question

2016-12-01 Thread Nigel W
Hello Len, How many threads or processes is the workload generating? Joyent and LX zones see all cpus and memory of the host (regardless of cpu_cap setting as far I know) so your workload may have gone overboard when it seen the 32*4 CPU threads and 1.5TB of RAM. In particular, is the workload

[smartos-discuss] Re: SmartOS release-20161124

2016-12-01 Thread Patrick Mooney
A regression regarding ZFS property reporting was found after the release last week. The fix has been backported with a release respin placed in Manta: /Joyent_Dev/public/SmartOS/20161129T003638Z https://us-east.manta.joyent.com/Joyent_Dev/public/SmartOS/smartos.html#20161129T003638Z On 24

Re: [smartos-discuss] New host and CPU question

2016-12-01 Thread Ian Collins
On 12/ 2/16 05:17 AM, Len Weincier wrote: Hi all Is there any issues with these cpu's and smartos - "Intel(R) Xeon(R) CPU E7-4850 v4 @ 2.10GHz" ? We have a new host with 4 of those cpus and 1.5TB ram and moved some machines to the host which are now thrashing the cpu - load avg in a test

[smartos-discuss] New host and CPU question

2016-12-01 Thread Len Weincier
Hi all Is there any issues with these cpu's and smartos - "Intel(R) Xeon(R) CPU E7-4850 v4 @ 2.10GHz" ? We have a new host with 4 of those cpus and 1.5TB ram and moved some machines to the host which are now thrashing the cpu - load avg in a test zone with cpu_cap=800 is over 180 and just

Re: [smartos-discuss] Re: New host and CPU question

2016-12-01 Thread Casey Bisson
To expand on Nigel’s excellent point, I’d suggest browsing through Intel and Facebook’s (independent, I think) research on scaling Memcached threads: https://software.intel.com/en-us/articles/enhancing-the-scalability-of-memcached-0

Re: [smartos-discuss] New host and CPU question

2016-12-01 Thread Len Weincier
> > This is the classic symptom of a machine with a cpu_cap less than its CPU > (core) count. > So the vm sees all the cores and dispatches threads / processes for that many cores but the actual uasage is limited by the cpu_cap so the threads are stalling waiting for the OS to give them a slot to