On Sun, 24 Mar 2013 11:01:05 -0500
Adam Vande More wrote:
> These are interesting results. Did you try tuning any of the jemalloc
> options in /etc/malloc.conf?
No tuning, jemalloc was tested "out of the box" just for curiosity.
> I think increasing the number of arenas may help the contention
On 24 March 2013 11:45, Adam Vande More wrote:
> jemalloc also has concurrency issues when threads > areas:
>
> http://people.freebsd.org/~jasone/jemalloc/bsdcan2006/jemalloc.pdf
Right.
I still think it's worth trying the mysql test in a debian/kfreebsd
install in a jail on the same machine you
jemalloc also has concurrency issues when threads > areas:
http://people.freebsd.org/~jasone/jemalloc/bsdcan2006/jemalloc.pdf
On Sun, Mar 24, 2013 at 12:51 PM, Adrian Chadd wrote:
> The contention is due to memory allocations being page aligned and
> those pools all hitting the same cache line
The contention is due to memory allocations being page aligned and
those pools all hitting the same cache line mappings.
Adrian
On 24 March 2013 09:09, Adam Vande More wrote:
> I think increasing the number of arenas may help the contention, eg "ln -s
> 3N /etc/malloc.conf"
>
> On Sun, Mar 24
I think increasing the number of arenas may help the contention, eg "ln -s
3N /etc/malloc.conf"
On Sun, Mar 24, 2013 at 11:01 AM, Adam Vande More wrote:
> These are interesting results. Did you try tuning any of the jemalloc
> options in /etc/malloc.conf?
>
>
> On Sat, Mar 23, 2013 at 3:34 PM, D
These are interesting results. Did you try tuning any of the jemalloc
options in /etc/malloc.conf?
On Sat, Mar 23, 2013 at 3:34 PM, Daniel Bilik wrote:
> On Fri, 22 Mar 2013 10:03:27 +0100
> Davide D'Amico wrote:
>
> > Hi, I'm doing performance tests on a DELL R720, follows dmesg:
> > ...
> > I
I haven't worked with CentOS since 6.0. I work on many other variants at this
time. I'm more than happy to take a look after I get my company off the
ground (A couple more months or land my next contracting gig)
Anyhow, unlike with jails, it seems no matter what type of VM I use, there'
... and how about setting up MySQL inside a Linux jail? Say,
installing debian/kfreebsd in a jail and then testing mysql in there?
Adrian
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On 3/23/13 3:44 AM, Davide D'Amico wrote:
Il 23.03.2013 01:34 Paul Pathiakis ha scritto:
Hi,
There are several things about this that are highly suspect.
First, wipe out the hardware RAID. The processor doing RAID
computation is, probably, MUCH slower than a core on the CPU. Even if
it's RAID-
On Sun, 24 Mar 2013 09:11:53 +0100
Davide D'Amico wrote:
> Ok, I'll try tomorrow and I'll post results here. Some particular
> parameter to use?
Well, sysbench's "simple" is really simple ;-), it performs a single
SELECTs (unlike "nontrx", which can be made to perform also writes). Table
size yo
On Sun, 24 Mar 2013 06:59:29 +0100
Davide D'Amico wrote:
> I'll try the 'simple' dataset, but do you think I have some chance to
> "solve" the issue?
Not sure. But in case you'll get much more similar (CentOS vs. FreeBSD)
results from "simple" OLTP test, as opposed to very differrent numbers
fo
Ok, I'll try tomorrow and I'll post results here. Some particular parameter to
use?
Daniel Bilik ha scritto:
>On Sun, 24 Mar 2013 06:59:29 +0100
>Davide D'Amico wrote:
>
>> I'll try the 'simple' dataset, but do you think I have some chance to
>
>> "solve" the issue?
>
>Not sure. But in case yo
Il 24.03.2013 07:10 Mehmet Erol Sanliturk ha scritto:
On Sat, Mar 23, 2013 at 10:59 PM, Davide D'Amico
wrote:
Il 22.03.2013 16:56 Евгений Хоркин ha scritto:
Hi Davide!
Sorry if I do a reply 'here' but some posts where filtered by
antispam.
To Daniel Bilik: yes, I used the 'complex' OLTP
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