Yes, use logical CPU count.
Matthew
On Aug 13, 2013, at 23:17, Jeremiah Peschka jeremiah.pesc...@gmail.com wrote:
When you say CPU does that mean logical CPU core? Or is this actually
referring to physical CPU cores?
E.g. On my laptop with 4 physical cores + HyperThreading, should I set
We are not yet tuning specifically for NUMA. This recent testing had both NUMA
and nonNUMA.
I count 64 logical cores in your example, so +S 32:32.
On Aug 14, 2013, at 9:31 AM, Jeremiah Peschka jeremiah.pesc...@gmail.com
wrote:
Final question - does NUMA matter?
e.g. quad socket system
For the following information should it be +S 4:4 or +S 4:8?
root@somehost# lshw -C processor
*-cpu
description: CPU
product: Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz
vendor: Intel Corp.
physical id: 4
bus info: cpu@0
version: Intel(R) Core(TM)
threads=8 is the key phrase … +S 4:4
On Aug 14, 2013, at 10:04 AM, Guido Medina guido.med...@temetra.com wrote:
For the following information should it be +S 4:4 or +S 4:8?
root@somehost# lshw -C processor
*-cpu
description: CPU
product: Intel(R) Core(TM) i7 CPU 930
Hi Matthew,
It is a bit confusing, cause let's say +S C:T is defined as:
C = Physical cores?
T = Total threads or total - physical cores?
Is it a sum of or the physical cores and total of threads? That's the
confusing part, let's say you have a server with 8 physical cores with
no hyper
http://www.erlang.org/doc/man/erl.html#+S
+S TotalSchedulers:OnlineSchedulers
On Wed, Aug 14, 2013 at 9:57 AM, Guido Medina guido.med...@temetra.comwrote:
Hi Matthew,
It is a bit confusing, cause let's say +S C:T is defined as:
C = Physical cores?
T = Total threads or total - physical
** The following is copied from Basho's leveldb wiki page:
https://github.com/basho/leveldb/wiki/Riak-tuning-1
Summary:
leveldb has a higher read and write throughput in Riak if the Erlang scheduler
count is limited to half the number of CPU cores. Tests have demonstrated
improvements of
When you say CPU does that mean logical CPU core? Or is this actually
referring to physical CPU cores?
E.g. On my laptop with 4 physical cores + HyperThreading, should I set +S
to +S 4:4
You hint that it doesn't matter, but I just wanted to trick you into
explicitly saying something.
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