<div dir="ltr">Thanks for the prompt answer sean, we shall set up concurrency to 24.<div><br></div><div>Nuria</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Sep 4, 2014 at 6:43 PM, Sean Pringle <span dir="ltr"><<a href="mailto:springle@wikimedia.org" target="_blank">springle@wikimedia.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra">Labsdb has max_user_connections=512, however that is intended to be a safety limit to avoid DOS, not a target to aim for :-) We can apply max_user_connections per account or per host if necessary, but it would be nice to avoid draconian measures.<br><br>Don't plan for 100s of concurrent connections. As a rule of thumb for slow queries, consider that the servers have 24 cores, so more than 24 concurrent slow queries in mysqld will start to be painful for everyone.<br><br><br><div class="gmail_quote"><div><div class="h5">On Fri, Sep 5, 2014 at 6:15 AM, Nuria Ruiz <span dir="ltr"><<a href="mailto:nuria@wikimedia.org" target="_blank">nuria@wikimedia.org</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr">Hello Labs People:<div><br></div><div>In the analytics team we are working in some big changes for wikimetrics and we have some questions about number of connections the wikimetrics user can sustain on labs db . <br>
<div><br></div><div>Is there a limit on database connections per labs instance? Is there an additional limit on mysql db connections per database instance?</div></div><div><br></div><div>Thanks, </div><span><font color="#888888"><div><br></div><div>
Nuria</div></font></span></div>
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