Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

I'm now struggling to get NYTProf to do what I need it seems to be only writing one request's worth of data when actually I'm expecting it to write 300 files all with 10 or so requests in.

PerlModule Devel::NYTProf::Apache PerlSetEnv NYTPROF file=/tmp/nytprof.out:addpid=1:endatexit=1

I can't really set MaxClients to 1 as the large response times don't occur without the concurrency.

The timings that are written out show a total of only just over 100ms even including the DB connect - which I assume I'm getting because its only logging my first request. Excluding the connect its about 30ms of time.

What I'm struggling with is how to translate one request into concurrent requests (for the purposes of estimating timing) - particularly when I'm seeing requests that with no DB activity show 1700ms average response time and with DB calls in there show 1800ms average response time. It suggests to me that something outside of my handler is taking the majority of the response time up when concurrency gets 'high'

The detailed results from 'ab' show the following:

Connection Times (ms) min mean[+/-sd] median max Connect: 48 1223 1633.2 918 14262 Processing: 2 611 368.2 573 1542 Waiting: 2 228 167.0 192 679 Total: 75 1833 1626.0 1705 14860

So the connect is definitely a big part...

OOOPS!!! Just been back and double checked the PHP results - turns out the PHP version I'd missed the 's' in the URL i.e. http and not https.

They now give similar results! Lets see if I can now do something productive with the other half of my day...


In reply to Re^3: mod_perl vs php performance when accessing Oracle under load by amasidlover
in thread mod_perl vs php performance when accessing Oracle under load by amasidlover

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (6)
    As of 2014-09-21 22:23 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (176 votes), past polls