Lew's dashboard

Lew gave praise in Is it Rails? on June 17, 2009 21:47:

Cool Stuff

Great idea and a useful site! Are you interested in a sponsor? New Relic might be interested in sponsoring the site... Contact me at cirne@newrelic.com if you're interested.

Lew set one of Lew's replies as an official response to "Stats rubber banding from minute to minute" in New Relic

Lew replied on February 27, 2009 17:39 to the problem "Stats rubber banding from minute to minute" in New Relic:

Hi Joseph,

On the cluster breakout chart you are showing above, this pattern is typical for many apps that have a bit of excess capacity (read: available mongrels). Once in a while, a mongrel will not process any requests for an entire minute, resulting in a brief spike down in this chart.

Another thing that might cause this is when a single mongrel takes longer than a minute to process a request (not pretty, but we see it all the time). In this case, for the minute in which the mongrel was processing but not completing the request, its throughput is zero. This seems to be what is happening here, since we see a spike in throughput in the next minute for the mongrel represented by the green line, as it catches up on processing the requests that have queued up on its mongrel queue. Transaciton Tracer (in Silver and Gold) can help you diagnose why those specific requests took so long to run.

If you see this kind of "rubber banding" in charts on other pages besides the cluster breakout page, please send us a note at the support address above with a url and/or screen shot. Thanks!

Lew replied on February 18, 2009 08:16 to the problem "newrelic.com very slow" in New Relic:

Hi Jesse,

Sorry you had some performance issues with RPM. I think you were logging in just as we were deploying a major upgrade, and we had some slower-than-normal performance during that period of time. Please let us know if you see continued performance issues, and we'll dig in with - you guessed it - RPM. Thanks!

-Lew

Lew set one of Lew's replies as an official response to "How is CPM defined?" in New Relic

Lew replied on February 15, 2009 19:36 to the question "How is CPM defined?" in New Relic:

Hi Lovitt,

"CPM" does indeed measure the number of times a given component is called in a minute, so the confusing part is why the CPM count for rendering a specific view exceeds the number of calls per minute for the corresponding controller action. Perhaps this view is getting rendered more than one timer per request, or getting rendered by other controller actions? If you send your account information and steps to reproduce the issue to support@newrelic.com we can investigate further. Thanks!

-Lew

Lew set one of Lew's replies as an official response to "Is it possible to have charts auto-refresh?" in New Relic

Lew replied on January 31, 2009 06:12 to the question "Is it possible to have charts auto-refresh?" in New Relic:

Hi coneybeare,

At the moment the only page we have that auto-refreshes is the main "dashboard" page. Many of our customers leave this page open all the time for exactly this purpose.

We don't currently auto refresh our pages with charts because the data we crunch through to produce these things is significant. As we continue to improve RPM's performance and scalability (using RPM of course) we'll look at putting auto-refresh into some of the other pages in the product. Thanks for the suggestion!

Lew replied on January 06, 2009 19:58 to the question "Doesn't capture AJAX queries" in New Relic:

Hi Sanjay,

Sorry to see you are having trouble with this - RPM is definitely designed to monitor AJAX-based controller actions just as it monitors "normal" http requests.

If you provide support@newrelic.com with your account name and other info to help us investigate and repro, we can see where the problem is and get you going. Cheers,

-Lew

Lew replied on December 13, 2008 20:59 to the problem "Upgrade to Rails 2.2.2" in New Relic:

Hi Dennis,

Sorry to see you are having troulbe with RPM and Rails 2.2.2, and further apologies that we haven't gotten back to you sooner. We are investigating and hope to have some answers for you early next week. Cheers,

-Lew

Lew replied on November 19, 2008 16:40 to the question "NewRelic Lite not being initialized - using passenger+mephisto" in New Relic:

Hi there,

Thanks for reaching out, and sorry you're having troubles getting RPM to report data. The log file info is useful and suggests that there is some kind of problem getting the agent started up in your app environment. We'll have our engineers look into this and get back to you soon. Regards,

-Lew

Lew replied on November 18, 2008 19:07 to the question "Set number of CPUs or customize thresholds?" in New Relic:

Hi Matt,

We don't yet have the ability to specify the # CPU's on a server, but we do allow you to specify your own thresholds. Simply click on the traffic light icon in your dashboard and the threshold editor will appear inline, ready to go. Here is a snapshot of our thresholds.


We do plan to address the "I have more than 1 CPU on a box and want to see CPU as a percentage of all the cores available" problem some point in the future. Thanks!

Lew replied on November 14, 2008 21:48 to the question "How do you count instances per month?" in New Relic:

Hi Matt,

Let's say you want 1 app on a host to have a silver license, and the other 2 to be lite. You should sign up for 2 accounts, 1 with a single silver license, and the other a lite account. Put the appropriate license key for each app in its newrelic.yml config file.

It is easy to switch views to any of the accounts you have access to by clicking the "switch account" link at the top of the page. At this time we don't have the ability to show you all of your accounts on a single screen, but we may do that at some point in the future. Hope this helps. Thanks!

Lew set one of Lew's replies as an official response to "How do you count instances per month?" in New Relic

Lew replied on November 10, 2008 23:51 to the question "How do you count instances per month?" in New Relic:

Hi Ryan,

Great question. Our per-host pricing counts the number of concurrently managad servers (virtual or phyisical) that are monitored by RPM at the same time. So if you purchase licenses for 2 hosts, then you can have agents from 2 servers report in to RPM at the same time. We handle connections on a first come first served basis, so if a 3rd server with your rails app tries to connect to RPM, its agent connection will be rejected. But otherwise, your application will run normally on that machine.

As a result, your license can "float" from one host to another. You may need to wait for 15 minutes or so for a licensee to be released from one host to be available to another one.

Lew replied on October 30, 2008 02:59 to the question "Mongrel restarts/time" in New Relic:

Hey Morten, thanks for asking the question - it certainly counts as a +1 for me for doing a better job of reporting Mongrel restarts. We have visibility into this, and we have an ok way of showing that to you, but I think we can certainly do better. Meanwhile, hope the solution we have in place for the time being helps you out! Cheers,

-Lew

Lew set one of Lew's replies as an official response to "Is there a way to see more results on the 'slow controllers' graph?" in New Relic

Lew replied on October 22, 2008 19:18 to the question "Is there a way to see more results on the 'slow controllers' graph?" in New Relic:

Hi there,

If you are not interested in measuring the performance of specific controllers and/or actions, you can exclude them from monitoring by our agent. That way, the top 20 slowest actions will be actually the "Top 20 that I actually care about".

To do this, check out our documentation on this topic at http://sites.google.com/a/newrelic.co...

Also, RPM Gold provides a comprehensive report on all controller actions, and allows you to do in depth analysis and comparison across the whole site.

Thanks!

Lew asked a question in Get Satisfaction on October 21, 2008 19:14:

Customizing the Feedback Widget

Is there a way to customize the appearance (size, location, color, etc) of the Feedback Widget? It kind of looks out of place when I put it into our app as-is. Other than that, we are really excited about the prospects of this new feature. Great stuff!

Lew replied on October 06, 2008 16:57 to the question "no "monitoring" pull down list" in New Relic:

Hi HD,

I noticed this problem myself late last week - we have a bug filed against it and hope to have it resolved shortly. Sorry for the inconvenience. Regards,

-Lew