'Graphs' Tag

  • Generating Google line charts with SQL, part II

    March 3, 2011

    This post continues Generating Google line charts with SQL, part I, in pursue of generating time series based image charts. We ended last post with the following chart: http://chart.apis.google.com/chart?cht=lc&chs=400x200&chtt=SQL%20chart&chxt=x,y&chxr=1,-4716.6,5340.0&chd=s:dddddddddeeeeeefffffffffeeeedddcccbbaaZZZYYYXXXXXXXXXYYYZZabbcdeefghhijkkllmmmmmmmmllkkjihgfedcbZYXWVUTSRRQQPPPPQQQRSTUVWXZacdfgijlmnpqrssttuuuttssrqonmkigfdbZXVTSQONMLKJIIIIIIJKLMOPRTVXZbegilnprtvwyz01111110zyxvtrpnkifcaXUSPNLJHFECBBAAABBCEFHJLNQTWZcfilortwy1346789999876420yvspmjfcYVSOL which has a nice curve, and a proper y-legend, but incorrect x-legend and no ticks nor grids. To date, Google Image Charts do not support time-series […]

  • Generating Google line charts with SQL, part I

    February 1, 2011

    In this series of posts I wish to show how Google Charts can be generated via SQL. We discuss the Google Charts limitations which must be challenged, and work towards a simple chart. I'm going to present the algorithm I use in mycheckpoint, a MySQL monitoring utility, which generates Google charts by raw data using […]

  • mycheckpoint (rev. 170): improved custom queries; local charting; page/swap I/O monitoring; improved HTML reports

    July 16, 2010

    Revision 170 of mycheckpoint, a MySQL monitoring solution, has been released. New and updated in this revision: Improved custom queries: lifting of limitations from previous, introductory revision; better HTML presentation Local, inline charting: no rendering of Google Charts, unless explicitly requested. All charts are now rendered locally using JavaScript. No data is now sent over […]

  • mycheckpoint (rev. 132): custom monitoring, custom charts, process list dump

    June 4, 2010

    Revision 132 of mycheckpoint has been released. New and updated in this revision: Custom monitoring: monitoring & charting for user defined queries HTML reports for custom monitoring Process list dump upon alert notifications Custom monitoring & charts Custom monitoring allows the user to supply with a query, the results of which will be monitored. That […]

  • Static charts vs. interactive charts

    March 2, 2010

    I'm having my usual fun with charts. Working on mycheckpoint, I've generated monitoring charts using the Google Chars API. But I've also had chance to experiment and deploy interactive charts, JavaScript based. In particular, I used and tweaked dygraphs. I'd like to note some differences in using charts of both kinds. And I think it […]

  • mycheckpoint (rev. 88): mount points monitoring, improved charting, enhanced auto-deploy

    February 10, 2010

    Revision #88 of mycheckpoint is released. In this revision: Disk space monitoring Improved charting Enhanced auto-deploy And more... Disk space monitoring mycheckpoint now monitors (on Linux only) three mount points: The "/" (root) mount point The datadir mount point The tmpdir mount point It may well be the case that two of the above (or […]

  • mycheckpoint rev. 76: OS monitoring, auto deploy, brief HTML and 24/7 reports

    January 5, 2010

    Revision 76 of mycheckpoint comes with quite a few improvements, including: OS monitoring (CPU, load average, memory) Auto-deploy Improved charting Brief HTML reports 24/7 charts OS Monitoring When monitoring the local machine, mycheckpoint now monitors CPU utilization, load average, memory and swap space. This only applies to the Linux operating system; there is currently no […]

  • New and noteworthy in mycheckpoint (rev. 57)

    December 16, 2009

    Rev. 57 of mycheckpoint has been released and is available for download. New and updated in this revision: Remote host monitoring Improved charting Flexible charting Fix to questions vs. queries issues Remote host monitoring It is now possible to monitor one host, while writing into another. Either or both could be remote hosts: mycheckpoint --host=localhost […]

  • SQL multi line chart

    November 3, 2009

    Time for another charting SQL query. I wish to present a single-query generated multi-line/area chart. I'll walk through some of the steps towards making this happen. By the end of this post I'll present some real-data charts, area charts and colored charts. +---------+-----------------------------------------------------------------------------------+ | y_scale | chart                                                                             | +---------+-----------------------------------------------------------------------------------+ | 1       | ****---------#######----------------------------------------*******--------###### | | […]

  • SQL pie chart

    August 12, 2009

    My other half says I'm losing it. But I think that as an enthusiast kernel developer she doesn't have the right to criticize people. ("I like user space better!" - she exclaims upon reading this). Shown below is a (single query) SQL-generated pie chart. I will walk through the steps towards making this happen, and […]

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