Performance Zen

Author: spierzchala

  • GrabPERF: Updates to the Index/Multi-Test Graphs

    Well, I am starting to try and improve the performance of the slowest graphs on the site, the Index/Multi-Test graphs.
    I have managed to completely eliminate the need for the temp tables I had been using, migrating to a pure associative array method. This is in the code that ensures that any tests that return no results for a given time period don’t cause PHPlot to throw a hissy fit.
    There has to be a way to do it faster. I have a couple of methods I am considering, but arrays within arrays scare me just a little!
    Let me know if you see any performance degradations.

  • The Truth Police

    Heh.

    Count on SkyNews to bring you an unintended laugh.
    Via: Fred Wilson
    Then do the following:

    Turns out that if you type “failure” into Google and hit “I feel lucky” you’ll get the official biography of, well, I don’t want to ruin the suprise.

    Heh!
    Via: Scoble

  • Katrina — The Facts the Bush Cabal Won’t Be Sharing

    Here you go. Read this.
    New Orleans has exposed the lie that is the Melting Pot.
    The United States is one white, christian nation, indivisible, except when profit is to be made.
    Then slave labour is allowed.

  • Technorati satire

    Ouch.
    Technorati accelerator.
    This one has to hurt. They are getting better…
    Via: The Blog Herald

  • Siebel: Dog has a new owner

    Oracle Agrees to Buy Siebel for $10.66 a Share
    Vaults Oracle to Number 1 in Customer Relationship Management
    Nice to be number one…unfortunately, the well is deep and it will be a while before this shotgun wedding finds any love.

  • GrabPERF: Search Index Weekly Results (Sep 5-11, 2005)

    The weekly GrabPERF Search Index Results are in.
    Week of September 4-11, 2005

    TEST                     RESULT  SUCCESS  ATTEMPTS
--------------------  ---------  -------  --------
PubSub - Search       0.5421396    99.72      5680
Google - Search       0.5741554   100.00      5681
Yahoo - Search        0.8028792    99.95      5678
eBay - Search         0.9255761   100.00      5681
Feedster - Search     1.2524916    99.86      5679
MSN - Search          1.2737601    98.40      5681
BestBuy.com - Search  1.3964269    99.91      5680
Technorati - Search   1.4128937    99.98      5681
BlogLines - Search    1.6020669    99.16      5681
Amazon - Search       1.9909649    99.74      3108
BENCHMARK RESULTS     2.0313721    99.50     76849
Blogdigger - Search   2.3336642    98.53      5577
Newsgator - Search    2.5181818    99.68      5681
IceRocket - Search    4.3043685    99.77      5680
Blogpulse - Search    7.4959768    98.40      5681

    These results are based on data gathered from three remote measurement locations in North America. Each location takes a measurement approximately once every five minutes.
    The measurements are for the base HTML document only. No images or referenced files are included.

    Technorati: , , , , ,
    IceRocket: , , , , ,

  • Katrina — Stupid, Rich White People Run Your Country

    Don’t you love this country?
    Bush lifts wage rules for Katrina

    President Bush issued an executive order Thursday allowing federal contractors rebuilding in the aftermath of Hurricane Katrina to pay below the prevailing wage.

    Oh, and in the arrogant, rich, white people category, the award goes to Jefferson Parish near New Orleans. It seems that the righteous folks there have decided to re-water parts of New Orleans so that their area can get up and running faster. [here]
    Remind me again why the United States continues to think that they are the moral leaders of the world community.

  • GrabPERF: Search Index Weekly Results (Aug 29-Sep 4, 2005)

    The weekly GrabPERF Search Index Results are in. Sorry for the delay.
    Week of August 29, 2005 – September 4, 2005

    TEST                     RESULT  SUCCESS  ATTEMPTS
--------------------  ---------  -------  --------
PubSub - Search       0.4132426    99.95      5561
Google - Search       0.5546451   100.00      5570
MSN - Search          0.7807107    99.87      5572
Yahoo - Search        0.7996602    99.98      5571
eBay - Search         0.9371296   100.00      5571
Feedster - Search     1.1738754    99.96      5569
Newsgator - Search    1.2168921    99.96      5569
BlogLines - Search    1.2857559    99.71      5571
BestBuy.com - Search  1.4136253    99.98      5572
Blogdigger - Search   1.8896126    99.74      5462
BENCHMARK RESULTS     1.9096960    99.79     75419
Amazon - Search       1.9795655    99.84      3123
Technorati - Search   2.7727073    99.60      5566
IceRocket - Search    5.0256308    99.43      5571
Blogpulse - Search    6.5206247    98.98      5571

    These results are based on data gathered from three remote measurement locations in North America. Each location takes a measurement approximately once every five minutes.

    The measurements are for the base HTML document only. No images or referenced files are included.

  • GrabPERF: Graphing Performance

    One of the issues with not being a coder is that development tends to be kludegy. Add in SQL queries and the mess gets worse.
    I have made some mods to the Index graphs (daily and hourly) that should only penalize the first person in one of my persistent database connections. After that, the queries are cached.
    And while sitting here, I just realized I could improve the speed of this process even more.
    I. Am. An. Idiot.
    I will fix it….later.

  • GrabPERF Server updated to PHP 5.1 RC1

    I was having issues upgrading the site to PHP 5.1, mainly because it broke a number of the GrabPERF graphs.
    Then I read the PHP docs. Turns out that there have been some internal changes to the strtotime() function. I had been using strtotime(date(Ymd H), time()) in the broken graphs; this now returns FALSE, not a numeric value.
    A simple switch to strtotime(date(YmdH0000), time()) resolved the problem entirely.
    If you see any weirdness, let me know!