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dim_STAT User's Guide. by Dimitri |
Single-Host Analyzing |
Single-Host is quite similar to Multi-Host, but gives wider variety of parameters as it working only with one given STAT collect. Let's use as example Demo collect (given by default with dim_STAT database) and analyze IOSTAT" data...So, you may open your browser now and just follow me step by step connecting to your dim_STAT server.
Choose Collect and STAT |
Example IOSTAT: Choose Disks criteria |
Choice of options is much more wide in Single-Host mode, you may really go in depth of collected data and obtain more an more detailed views adapting them to your needs...Disks - several possible combinations :) (but quite similar for all multi-line STATs)
- nothing selected (as it) means just using all data without any select refine
- you may refine your criteria by selecting only needed disk(s)
- you may exclude selected disk(s) by selecting 'Inversed Selection' checkbox
- you may use value-oriented selection (ex. Top-10 Busy% disks)
- you may exclude disks with unwanted data values
- or simply give a select pattern (very useful if you want to avoid SDS metadevices, etc.)Interval is similar to Multi-Host. To simplify, let's see last 100 measured data per disk (there are few)
Values Special Operations may be used on demand. You can see them per disks basis, or SUM/AVG for all of them, or even group values by first N characters from the disk name (very useful if you want to analyze I/O activity per controller), as well by last N characters (negative N value will mean 'last').
Example IOSTAT: Choose STAT Variables |
Data Presentation may vary from three forms:
- Graphics - graphical representation (as we already saw before)
- Table of Results - collect's raw data presented as HTML or Text output (table) and printed on screen or into temporary file
- Top-N values - just in few clicks check the MAX/MIN values of any STAT variables during given time period (for ex: if there was no any disks more busy than 30% - it's ok, and you even don't need to look at graphs, or if there are any - you know at once the time slices you need to analyze for possible activity jump)...So well, here I want to see:
- Graph
- with disk Busy%
- and Bookmark LinksBookmark Links may be inserted on the bottom of every viewed graph. Clicking on one of these links will show you another statistics view for exactly the same time period!
Start!
Example IOSTAT: Result Graph |
Some new points here: under graph you'll see a list of Bookmark links, if you click on "CPU" (for ex.) new graph will appear with CPU activity during the same time period you're observing (it's important, because even 3 days later it'll point to the same time slice).You'll also find "Add LOG-Massage" field as for Multi-Host.
And the new one: Save Graph as Bookmark.
Save Graph as Bookmark... |
Is a really cool feature to save your time: right now you may simply give a short and long names for obtained graph view and save it as a new "Bookmark". Once it done, all your options selection will be saved (booked) under given name and instead of clicking on all checkboxes to get similar data but for another time period or another STAT collect - all you'll need is just click on one button with your "Bookmark Name"!Next section is about Bookmarks...
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