567508 - Request to increase memory/power for SUMO staging VM

Status: VERIFIED FIXED

(mozilla.org Graveyard :: Server Operations, task)

Description

[Stephen Donner [:stephend] Not actively reading bugmail]

I don't have profile/performance data behind it, but SUMO staging is definitely slower than prod (which is to be expected), at times up to 4x slower (i.e., I've never seen prod hit the ~5 seconds it can take to load the homepage or article page, uncached).

What are the stats on the VM, and is it possible to get it sped up?

Thanks.

(BTW, not sure if this bug should be confidential or whatever; mark as needed.)

Comment 1

[Shyam Mani [:fox2mike]]

Off the top of my head (without even looking at anything), it's probably incorrect to expect stage to be as fast as prod :D (as you rightly expected).

stage provides an environment similar to prod, it's performance isn't really of concern at all unless there is a performance issue on production that needs to be checked out.

Many of our setups have lower hardware for stage, a good example being AMO. A while back, a query that took 9 mins on dev took 30 seconds on production, which is how much the hardware varies.

Now I'll go poke and see what I can find and if we can push up a few things.

Comment 2

[Shyam Mani [:fox2mike]]

So we have 2 cores and 2 GB of RAM. I can probably jack up the RAM to 4GB...but not really sure how much that's going to help.

Poked around at sar, don't really see the box doing that much, but that's right now. Is it always sluggish? Or during specific times?

Comment 3

[James Socol [:jsocol, :james]]

The PHP side is always pretty sluggish. Maybe we can get a bit of a boost by looking at Apache prefork/worker (whichever) settings?

On the other hand, the Python side feels pretty quick to me (Rebecca, Stephen: disagree?). I'm not sure how much anything but "more power" and "stop using Tiki" will help, if the PHP/Tiki side is the bottleneck.

Comment 4

[matthew zeier [:mrz]]

James - when can this go offline to bump memory again?

Comment 5

[James Socol [:jsocol, :james]]

Any time today should be fine.

Comment 6

[matthew zeier [:mrz]]

Bumped to 4GB, booting up.

Comment 7

[James Socol [:jsocol, :james]]

Thanks, mrz.

Stephen, Rebecca: does it feel snappier?

Comment 8

[Stephen Donner [:stephend] Not actively reading bugmail]

(In reply to comment #7)
> Thanks, mrz.
> 
> Stephen, Rebecca: does it feel snappier?

Without any conclusive, concrete performance tests, it's of course subjective, but yeah, does feel a bit snappier, once the HTTP connection is made.