RE: Performance Problems.. Server hardware smoked by $500 box?

From: John Straiton (jsmailing_at_clickcom.com)
Date: 09/12/03

  • Next message: John Straiton: "RE: Performance Problems.. Server hardware smoked by $500 box?" 
    To: "'Marc Slemko'" <marcs@znep.com>
Date: Fri, 12 Sep 2003 10:30:58 -0400

    > The first step would be to try to quantify the performance
    > difference in serving the actual web pages. Find a single
    > page that you think is slow on the production system and that
    > can be accessed without having to be part of a session, and
    > quantify the performance difference for that page. Remember
    > you don't care about high load, just a single user request.
    > You could use apachebench ("ab", comes with apache...
    > something like "ab -c 1 -n 20
    > http://server/path/to/page") or any simple command line tool
    > that you can time (eg. repeatedly run "time GET
    http://server/path/to/page"). Do this from as near as possible to the
    box you are running the web browser that sees the slowness loading.

    I ran a couple of tests, and put the one you requested along with one of
    the more amusing ones to me, below. These request a page that uses PHP
    sessions (the sessions are kept over NFS) and a couple of database
    queries. All 3 servers use the same database, tho obviously the database
    server handles them locally along with handling the files locally vs
    over NFS like the other two would.

    I think to sidestep any more testing that may/may not give us more
    clues, what we're going to press forward with is trying to get another
    >133Mhz FSB setup in here since they're so cheap and just testing to see
    if we see similar results if we set it's harddrive up as a mirror of the
    production web machine. If by using the same OS installation, and only
    change the underlying hardware, I'd say that would more-than-likely tell
    us if this is strictly a hardware issue, assuming it performs equally
    well as the development machine while using the production machine's
    setup.

    John Straiton
    jks@ clickcom.com
    Clickcom, Inc
    704-365-9970x101

    Running "ab -c 1 -n 10" on these machines:
    >Production Web over NFS
    Benchmarking 209.198.22.161 (be patient).....done
    Server Software: Apache/2.0

    Server Hostname: 209.198.22.161
    Server Port: 80

    Document Length: 67769 bytes

    Concurrency Level: 1
    Time taken for tests: 4.918 seconds
    Complete requests: 10
    Failed requests: 0
    Broken pipe errors: 0
    Total transferred: 681350 bytes
    HTML transferred: 677690 bytes
    Requests per second: 2.03 [#/sec] (mean)
    Time per request: 491.80 [ms] (mean)
    Time per request: 491.80 [ms] (mean, across all concurrent
    requests)
    Transfer rate: 138.54 [Kbytes/sec] received

    >Production DB serving pages locally
    Benchmarking 209.198.22.35 (be patient).....done
    Server Software: Apache/1.3.27

    Server Hostname: 209.198.22.35
    Server Port: 80

    Document Length: 68585 bytes

    Concurrency Level: 1
    Time taken for tests: 2.232 seconds
    Complete requests: 10
    Failed requests: 0
    Broken pipe errors: 0
    Total transferred: 689870 bytes
    HTML transferred: 685850 bytes
    Requests per second: 4.48 [#/sec] (mean)
    Time per request: 223.20 [ms] (mean)
    Time per request: 223.20 [ms] (mean, across all concurrent
    requests)
    Transfer rate: 309.08 [Kbytes/sec] received

    > Development Server over NFS
    Benchmarking dev.clickcomworks.net (be patient).....done
    Server Software: Apache/1.3.27

    Server Hostname: dev.clickcomworks.net
    Server Port: 8000

    Document Length: 68237 bytes

    Concurrency Level: 1
    Time taken for tests: 1.799 seconds
    Complete requests: 10
    Failed requests: 0
    Broken pipe errors: 0
    Total transferred: 686380 bytes
    HTML transferred: 682370 bytes
    Requests per second: 5.56 [#/sec] (mean)
    Time per request: 179.90 [ms] (mean)
    Time per request: 179.90 [ms] (mean, across all concurrent
    requests)
    Transfer rate: 381.53 [Kbytes/sec] received

    Now with "ab -c 10 -n 10", which is just beautiful

    >Production Web over NFS
    Benchmarking 209.198.22.161 (be patient).....done
    Server Software: Apache/2.0

    Server Hostname: 209.198.22.161
    Server Port: 80

    Document Length: 67769 bytes

    Concurrency Level: 100
    Time taken for tests: 6.424 seconds
    Complete requests: 10
    Failed requests: 0
    Broken pipe errors: 0
    Total transferred: 817620 bytes
    HTML transferred: 813228 bytes
    Requests per second: 1.56 [#/sec] (mean)
    Time per request: 64240.00 [ms] (mean)
    Time per request: 642.40 [ms] (mean, across all concurrent
    requests)
    Transfer rate: 127.28 [Kbytes/sec] received

    >Production DB over NFS
    Benchmarking 209.198.22.35 (be patient).....done
    Server Software: Apache/1.3.27

    Server Hostname: 209.198.22.35
    Server Port: 80

    Document Length: 68585 bytes

    Concurrency Level: 10
    Time taken for tests: 34.430 seconds
    Complete requests: 100
    Failed requests: 0
    Broken pipe errors: 0
    Total transferred: 6898700 bytes
    HTML transferred: 6858500 bytes
    Requests per second: 2.90 [#/sec] (mean)
    Time per request: 3443.00 [ms] (mean)
    Time per request: 344.30 [ms] (mean, across all concurrent
    requests)
    Transfer rate: 200.37 [Kbytes/sec] received

    >Development over NFS
    Benchmarking dev.clickcomworks.net (be patient).....done
    Server Software: Apache/1.3.27

    Server Hostname: dev.clickcomworks.net
    Server Port: 8000

    Document Length: 68237 bytes

    Concurrency Level: 100
    Time taken for tests: 2.093 seconds
    Complete requests: 10
    Failed requests: 0
    Broken pipe errors: 0
    Total transferred: 1046656 bytes
    HTML transferred: 1040240 bytes
    Requests per second: 4.78 [#/sec] (mean)
    Time per request: 20930.00 [ms] (mean)
    Time per request: 209.30 [ms] (mean, across all concurrent
    requests)
    Transfer rate: 500.07 [Kbytes/sec] receive

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