<div dir="ltr"><div class="gmail_default" style="font-size:large">I tested Tokudb long ago but strange enough you cannot have huge-pages enabled in the server. My servers have a minimum of 500 G of RAM, so the idea is a no-go. All virtualization technologies benefit from huge-pages. I donĀ“t know if the Tokudb developers live in a parallel universe.<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Nov 11, 2014 at 10:29 PM, Fajar A. Nugraha <span dir="ltr"><<a href="mailto:list@fajar.net" target="_blank">list@fajar.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Wed, Nov 12, 2014 at 9:27 AM, CDR <<a href="mailto:venefax@gmail.com">venefax@gmail.com</a>> wrote:<br>
><br>
> That is how we do business now, over TCP. By the way, I downloaded a new derivative of Mysql, <a href="http://paralleluniverse-inc.com/" target="_blank">http://paralleluniverse-inc.com/</a>, and it seems, in my tests, several times faster than any other version, at least for this query<br>
> select count(*) from table; where table has 550 million records. I have the exact same table on Mariadb and regular mysql, and it takes around 10 times longer to get the result, on the same vmware datastore. Do I have to think that this results are not real and I am perhaps doing something wrong? If anybody can test this free technology, I would be grateful. They claim to work in parallel.<br>
><br>
<br>
<br>
</span>Your question would be more appropriate on mysql list.<br>
<br>
However here's some comments from me:<br>
- select count(*) is NOT a suitable query for performance measurement.<br>
Short version: some storage engines cheat, they don't exactly do the<br>
count, only returns the estimate.<br>
- if you read <a href="http://www.paralleluniverse-inc.com/parallel_universe_5.5-3.1_usage_guide.txt" target="_blank">http://www.paralleluniverse-inc.com/parallel_universe_5.5-3.1_usage_guide.txt</a><br>
, you'll see that only certain kinds of queries will benefit from<br>
their tech, and even then you must explicitly set some variables<br>
- for generic use on a single server, I currently use tokudb (on some<br>
server) and mariadb with tokudb engine (on some others). I'm happy<br>
with the results so far<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Fajar<br>
</font></span><div class="HOEnZb"><div class="h5">_______________________________________________<br>
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