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Re: MySQL on T2000

Single thread performance of the T2000 is definatly lower than of x86 hardware, but a factor of 30 is to high. I would have expected factor 3-4, maybe 10.

We use a T2000 for LDAP and MySQL server in Solaris 10 LDOMs, and the system perform reasonably well.

Mit freundlichen Grüßen,

Rainer Herbst
Zentrale Einrichtung für Informations-
verarbeitung und Kommunikation (ZEIK)
Universität Potsdam
Am Neuen Palais 10, Haus 8, Zimmer 0.70a
14469 Potsdam
Tel. 0331 - 977 1039

Quoting Patrick Baggett <baggett.patrick@gmail.com>:

Just from reading others' questions and answers over the web, I wouldn't be
surprised if that was the case, especially if you are doing anything that
needs an FPU in there. Also IIRC, they are in-order CPUs, which means
having proper compiler flags will make a difference. Stock MySQL from
Debian probably doesn't have any special flags applied, whereas you'd
probably want "-mtune=niagara".

I'm interested in finding out the answer as well -- I've considering
picking up a used T2-based, which has similar characteristics, since they
are down to a few hundred dollars.


On Mon, Jan 27, 2014 at 1:35 PM, Chris Lawrence <chris@nrsys.org> wrote:


I have been gifted a Sun T2000 from my employer as a hand-me-down
piece of hardware.  I have had plenty of experience using it as a
Solaris 10 box, and we generally ran Oracle and our in-house products
on the hardware with good results.

After getting the hardware, without a Sun contract I went with Debian,
which was fine as my expertise/background is more heavily Linux than
Solaris anyways.

After a lot of tinkering I got the system as I liked it, prepared to
host several LXC containers, separated as database and web servers for
a project for my friend's gaming website.  All went well, until I
started working with MySQL.  I started noticing significant
differences in performance, and, I went down the rabbit hole to find
plenty of articles talking about how MySQL doesn't run well on The
T2000's due to single threadedness sort of reasons.

I've done a good amount of fine tuning of the database, but I'm
finding any query of complexity taking sometimes as much as 30x longer
to execute than on same-era x86 hardware running Debian.

I am really just trying to figure out if I'm wasting my time by trying
to 'fix' this, or if its a reality of the hardware platform.  Even
simple 'select BENCHMARK' queries are returning back after 25-30
seconds, whereas on the x86 box it comes back in 1-2 seconds.

Is MySQL on this hardware platform a lost cause, or am I missing
something obvious?

Thanks in advance!



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