Hi,
One more question.
How to interpret the y-axis counters? I mean, I don’t know what does ‘10m’
and ‘20m’ means. That is, I don’t know what ‘m’ means.
Best regards,
Rongrong
Ext: 58606251
Cell phone: 13581551124
________________________________
From: ZHANG Rongrong
Sent: 2011年3月15日 15:31
To: 'saurabh verma'
Cc: '[email protected]'; '[email protected]'
Subject: RE: [Ganglia-general] problem in interpreting the scale of ganglia
graphic counters
Got it . Thanks so much.
Best regards,
Rongrong
Ext: 58606251
Cell phone: 13581551124
________________________________
From: saurabh verma [mailto:[email protected]]
Sent: 2011年3月15日 15:25
To: ZHANG Rongrong
Cc: Bernard Li; [email protected]
Subject: Re: [Ganglia-general] problem in interpreting the scale of ganglia
graphic counters
Its defined in the gmetad.conf , how the data is being polled
data_source "my cluster" [polling interval] address1:port addreses2:port ...
The keyword 'data_source' must immediately be followed by a unique
string which identifies the source, then an optional polling interval in
seconds. The source will be polled at this interval on average.
If the polling interval is omitted, 15sec is asssumed.
While graphing the data , It depends on the size of image you are graphing ,
When you are graphing for lets say two days for 300 width pixel graph , rrdtool
graph calculates a pixel value on a graph by its default reducing factor i.e
average, It averages the data so that you get uniform display of data points ,
If you increase your image size each pixel will hold less number of data points
i.e granular graph .
~saurabh
On 15-Mar-2011, at 12:08 PM, ZHANG Rongrong wrote:
Yes. The “last hour data” and the “last two days data” is like this,
^
^
20 m |
20m|
|
|
|
|
10 m |
10m|
|
|
|_________________________________>
|___________________________________>
0 12:20 12:40 13:00
0 13 14
I want to know if the data is calculated per minute or differently between
these two graphs?
Best regards,
Rongrong
Ext: 58606251
Cell phone: 13581551124
________________________________
From: Bernard Li [mailto:[email protected]]
Sent: 2011年3月15日 14:17
To: [email protected]
Subject: Re: [Ganglia-general] problem in interpreting the scale of ganglia
graphic counters
Hi Rongrong:
Did you mean how frequently the metric data is collected? Or how does the "last
hour data" get consolidated to "last two days data"?
P.S. The images you have posted are too big, please either compress them or
upload them to an external image hosting site and post the URL here. The
mailing-list supports up to 40KB emails.
Regards,
Bernard
2011/3/14 ZHANG Rongrong <[email protected]>
Please see these two pictures, the first is The Last Hour’s data, and the
second is the Last Two Days data. We want to know the interval between the
calcutation. I mean, how long does it calculate once?
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