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The test driven development guys refer to a quick, exploratory, investigation that involves coding something up to see if it works , a spike .
Any ideas why they came up with that word?
Update: The coinage by Kent Beck looks like the 'original' one to...
Started by mackenir on
, 7 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
If the spike sticks, then....
Where you put a spike in the mountain on your way up.
I always considered it to be a mountain climber analogy .
A spike in CPU usage.
Because it's out of the ordinary, like a spike in a graph.
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I have a winforms application that normally is at about 2-4% CPU. We are seeing some spikes up to 27% of CPU for limited number of times. What is the best profiling tool to determine what is actually causing this spike. We use dottrace but i dont see ...
Started by oo on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
This assumes of course that you have some sort of deterministic behavior... .
spikes consistently by invoking certain actions in the APP, then what I would do is try and get my whatever typically results in the spike, and examine those results.
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At my current company I have started to bring in agile practices and we're off to a good start. We're through our first release and are soon starting on our second release. While management has agreed not to introduce any new work during an iteration,...
Started by Sean Chambers on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Where I work, spikes tendWe use spikes when we need to investigate something which we don't know enough about to actually schedule and estimate a....
Therefore it is the PO decision to spend the Team time on a spike or on stories.
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I have a lot of data collected in rrd files. Does anyone know of a script, or part of the rrd toolset that will show 'spikes'.
Basically I would like to give it a window specified by start time and end time. Then maybe a threshold above the average for...
Started by Kyle Brandt on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at serverfault):
I have....
Is your data noisy?
Try using the TREND to highlight the spike.
Looking for spikes is an interesting problem in general.
I'm not sure whether it will print the values.
And remove spikes over a certain percentage or value.
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I hosted my application in production. Within 5 to 6 hours the application pool spikes and uses more memory?
What application objects or system objects are stored in the application pool?
Started by Ramesh on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
The memory raise behavior you are....
An application pool is a worker process spawned by IIS to host one or more applications .
If you are looking for memory leaks, try downloading the trial version of MemProfiler (or one of the other products available) .
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Might be subjective and/or discussion.. but here goes.
I've been asked to estimate a feature for the next big thing at work. I break it down.. use story points come up with a estimate. The feature however calls for interfacing with GoDiagrams a third ...
Started by Gishu on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Expect them to deliver one concrete result....
They are not about playing around with all.
They should be short, time boxed sessions.
Get better at estimating spikes.
How long it takes you to create usable/helpful spikes for unknown areas 1.
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I have a J2EE Spring/Hibernate webapp using Oracle 11g for persistence, occasionally in production the Oracle CPU spikes to 100% usage, restarting Tomcat drops the Oracle CPU. I am unable to replicate this in test, even using an export from production...
Started by BZ on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at serverfault):
Http://download....
I personally haven't done this on Oracle, but they do have online documentation to point you in the right direction .
You can enable performance tracing on the database and monitor the execution of your queries with some built in utilities .
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So, there is a horribly written site that I occasionally help out with that was originally written in classic ASP.
It was then "ported" to ASP.NET by moving the global variables to the code behind and leaving the rest of the code in the aspx...Its a huge...
Started by FlySwat on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Hi, Check out thus guy's blog
http://blogs....
Usually the best place to start is the Http.sys log:
HTTP.SYS error log - %windir%\System32\LogFiles\HTTPERR
You can also check the event log and IIS log to see if you have any additional information in there .
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I find myself needing to process network traffic captured with tcpdump . Reading the traffic is not hard, but what gets a bit tricky is spotting where there are "spikes" in the traffic. I'm mostly concerned with TCP SYN packets and what I want to do is...
Started by Vatine on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
The hardest part is tuning T1, T2 and K so that you don't get too many false positives and you don't miss any small spikes, but will become large when there....
Filters and when it exceeds a certain threshold, K, then that would be a spike.
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First, just a bit of background:
One of our customers is experiencing CPU usage spikes for WebSphere instances running one of our web apps (other instances with other apps are fine). They have a test environment and a live environment (both iSeries) which...
Started by Harry Lime on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
Can you describe the disk subsystem? Can you see if your app is spending an unusually large amount of time in iowait?
My best guess is that it is some... .
Very instinctively (being unfamiliar with iSeries platforms) I would look at disk IO related issues .
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