Speed difference under load

[K J]

>
> The slowdown is almost certainly in your client library. The server, on
> our systems, takes about 1.5 milliseconds to start up, and a fraction of
> a millisecond to answer the first request. But your client might be
> doing a lot of work the first time it executes. You didn't say what your
> client language and environment is, so it's kind of hard to even take a
> useful guess.


The app is running on PHP and is using the PHP memcache library:
http://cn2.php.net/manual/en/ref.memcache.php

I record the time it takes to render a page, and every page ends up taking 1
second or so.  Most of that 1 second is due to the very first memcache get
request.  It happens at every page that uses memcache.  The only time this
problem goes away is when I run a load testing tool and start having
multiple users hit the system constantly.




On 10/27/07, Steven Grimm <sgrimm at facebook.com> wrote:
>
> K J wrote:
> > So it's normal to have Memcache's response time be 1 second, if the
> > system is relatively idle?  This happens when I'm basically the only
> > user on the system, logging in, checking pages, etc.
>
> The slowdown is almost certainly in your client library. The server, on
> our systems, takes about 1.5 milliseconds to start up, and a fraction of
> a millisecond to answer the first request. But your client might be
> doing a lot of work the first time it executes. You didn't say what your
> client language and environment is, so it's kind of hard to even take a
> useful guess.
>
> -Steve
>
>
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