Random Slow Requests that CFTrace Can't Find

Description:
I am troubleshooting some slow loading pages and have been getting some interesting and inconsistent results. I'd like some help on how to better troubleshoot the problem, so that I can fix it. I started by looking at database query times, but have ruled it out. Next, I added numerous trace elements to the page in question to see where the slowness is occurring. To my dismay, the slowness occurs only sometimes and at different points in my traces. I'm confused by the results. What can I do to isolate where the problem is happening?
I've renamed my files and traces for anonymity. There is quite a lot of logic happening in the pages I'm running.
Below is some information about my setup. I've added a "Total DB Time" to the standard CF debugging page to try and prove that this is not a slow running database request. The examples below were taken from my local machine with nothing else running on it. I clicked refresh on the same page several dozen times and copied a few of the more interesting results. In reality, the results are very random in appearance. Sometimes I'll get a dozen refreshes that are under 500ms, and sometimes it seems like every request is over 4000ms. Check out the total db time and the trace times.
Information:
- Coldfusion 9 (all hot fixes and updates applied)
- JRUN
- Default JRE Version
- Windows 7
- Apache
- MySQL
What I have tried without any success:
- Running the code on numerous computers (at least 5 other computers confirming the same results)
- Running it on different java versions
- Running it on Coldfusion 7 MX
- Running CF on JBoss instead of Jrun
- Enabling and disabling all database caching
- Enabling and disabling trusted cache
- Setting a really high or low total cached query value
- Enabling and disabling white space management
- Changing the MySQL JDBC driver
Total Time : 573ms
Total DB Time : 32ms
information type [17:03:11.807 widget\example_page.cfm @ line: 106] [450 ms (1st trace)] - One
information type [17:03:11.809 widget\example_page.cfm @ line: 137] [452 ms (2 ms)] - Two
information type [17:03:11.818 widget\example_page.cfm @ line: 212] [461 ms (9 ms)] - Three
information type [17:03:11.858 widget\example_page.cfm @ line: 443] [501 ms (40 ms)] - Five
information type [17:03:11.862 widget\example_page.cfm @ line: 451] [505 ms (4 ms)] - Six
information type [17:03:11.865 widget\example_page.cfm @ line: 465] [508 ms (3 ms)] - Seven
information type [17:03:11.873 widget\example_page.cfm @ line: 603] [516 ms (8 ms)] - Eight
information type [17:03:11.900 widget\example_page.cfm @ line: 641] [543 ms (27 ms)] - Nine
information type [17:03:11.902 widget\example_page.cfm @ line: 667] [545 ms (2 ms)] - Ten
information type [17:03:11.914 widget\example_page.cfm @ line: 786] [557 ms (12 ms)] - Eleven
information type [17:03:11.924 widget\example_page.cfm @ line: 926] [567 ms (10 ms)] - Twelve
information type [17:03:11.928 widget\example_page.cfm @ line: 987] [571 ms (4 ms)] - Thirteen
information type [17:03:11.929 widget\example_page.cfm @ line: 1099] [572 ms (1 ms)] - Fourteen
information type [17:03:11.930 widget\example_page.cfm @ line: 1114] [573 ms (1 ms)] - Fifteen
Total Time: 449ms
Total DB Time : 44ms
information type [17:06:11.286 widget\example_page.cfm @ line: 106] [342 ms (1st trace)] - One
information type [17:06:11.288 widget\example_page.cfm @ line: 137] [344 ms (2 ms)] - Two
information type [17:06:11.294 widget\example_page.cfm @ line: 212] [350 ms (6 ms)] - Three
information type [17:06:11.317 widget\example_page.cfm @ line: 443] [373 ms (23 ms)] - Five
information type [17:06:11.319 widget\example_page.cfm @ line: 451] [375 ms (2 ms)] - Six
information type [17:06:11.320 widget\example_page.cfm @ line: 465] [376 ms (1 ms)] - Seven
information type [17:06:11.322 widget\example_page.cfm @ line: 603] [378 ms (2 ms)] - Eight
information type [17:06:11.358 widget\example_page.cfm @ line: 641] [414 ms (36 ms)] - Nine
information type [17:06:11.360 widget\example_page.cfm @ line: 667] [416 ms (2 ms)] - Ten
information type [17:06:11.377 widget\example_page.cfm @ line: 786] [433 ms (17 ms)] - Eleven
information type [17:06:11.386 widget\example_page.cfm @ line: 926] [442 ms (9 ms)] - Twelve
information type [17:06:11.391 widget\example_page.cfm @ line: 987] [447 ms (5 ms)] - Thirteen
information type [17:06:11.392 widget\example_page.cfm @ line: 1099] [448 ms (1 ms)] - Fourteen
information type [17:06:11.393 widget\example_page.cfm @ line: 1114] [449 ms (1 ms)] - Fifteen
Total Time: 4097ms
Total DB Time : 36ms
information type [17:06:32.824 widget\example_page.cfm @ line: 106] [511 ms (1st trace)] - One
information type [17:06:32.826 widget\example_page.cfm @ line: 137] [513 ms (2 ms)] - Two
information type [17:06:32.833 widget\example_page.cfm @ line: 212] [520 ms (7 ms)] - Three
information type [17:06:32.864 widget\example_page.cfm @ line: 443] [551 ms (31 ms)] - Five
information type [17:06:32.865 widget\example_page.cfm @ line: 451] [552 ms (1 ms)] - Six
information type [17:06:32.867 widget\example_page.cfm @ line: 465] [554 ms (2 ms)] - Seven
information type [17:06:32.870 widget\example_page.cfm @ line: 603] [557 ms (3 ms)] - Eight
information type [17:06:36.381 widget\example_page.cfm @ line: 641] [4068 ms (3511 ms)] - Nine
information type [17:06:36.382 widget\example_page.cfm @ line: 667] [4069 ms (1 ms)] - Ten
information type [17:06:36.395 widget\example_page.cfm @ line: 786] [4082 ms (13 ms)] - Eleven
information type [17:06:36.404 widget\example_page.cfm @ line: 926] [4091 ms (9 ms)] - Twelve
information type [17:06:36.408 widget\example_page.cfm @ line: 987] [4095 ms (4 ms)] - Thirteen
information type [17:06:36.409 widget\example_page.cfm @ line: 1099] [4096 ms (1 ms)] - Fourteen
information type [17:06:36.410 widget\example_page.cfm @ line: 1114] [4097 ms (1 ms)] - Fifteen
Total Time: 4048ms
Total DB Time : 34ms
information type [17:07:34.427 widget\example_page.cfm @ line: 106] [520 ms (1st trace)] - One
information type [17:07:37.864 widget\example_page.cfm @ line: 137] [3957 ms (3437 ms)] - Two
information type [17:07:37.870 widget\example_page.cfm @ line: 212] [3963 ms (6 ms)] - Three
information type [17:07:37.893 widget\example_page.cfm @ line: 443] [3986 ms (23 ms)] - Five
information type [17:07:37.894 widget\example_page.cfm @ line: 451] [3987 ms (1 ms)] - Six
information type [17:07:37.896 widget\example_page.cfm @ line: 465] [3989 ms (2 ms)] - Seven
information type [17:07:37.898 widget\example_page.cfm @ line: 603] [3991 ms (2 ms)] - Eight
information type [17:07:37.926 widget\example_page.cfm @ line: 641] [4019 ms (28 ms)] - Nine
information type [17:07:37.928 widget\example_page.cfm @ line: 667] [4021 ms (2 ms)] - Ten
information type [17:07:37.940 widget\example_page.cfm @ line: 786] [4033 ms (12 ms)] - Eleven
information type [17:07:37.948 widget\example_page.cfm @ line: 926] [4041 ms (8 ms)] - Twelve
information type [17:07:37.952 widget\example_page.cfm @ line: 987] [4045 ms (4 ms)] - Thirteen
information type [17:07:37.953 widget\example_page.cfm @ line: 1099] [4046 ms (1 ms)] - Fourteen
information type [17:07:37.955 widget\example_page.cfm @ line: 1114] [4048 ms (2 ms)] - Fifteen
Total Time: 447ms
Total DB Time : 27ms
information type [17:08:11.871 widget\example_page.cfm @ line: 106] [357 ms (1st trace)] - One
information type [17:08:11.872 widget\example_page.cfm @ line: 137] [358 ms (1 ms)] - Two
information type [17:08:11.878 widget\example_page.cfm @ line: 212] [364 ms (6 ms)] - Three
information type [17:08:11.901 widget\example_page.cfm @ line: 443] [387 ms (23 ms)] - Five
information type [17:08:11.905 widget\example_page.cfm @ line: 451] [391 ms (4 ms)] - Six
information type [17:08:11.906 widget\example_page.cfm @ line: 465] [392 ms (1 ms)] - Seven
information type [17:08:11.908 widget\example_page.cfm @ line: 603] [394 ms (2 ms)] - Eight
information type [17:08:11.934 widget\example_page.cfm @ line: 641] [420 ms (26 ms)] - Nine
information type [17:08:11.936 widget\example_page.cfm @ line: 667] [422 ms (2 ms)] - Ten
information type [17:08:11.947 widget\example_page.cfm @ line: 786] [433 ms (11 ms)] - Eleven
information type [17:08:11.955 widget\example_page.cfm @ line: 926] [441 ms (8 ms)] - Twelve
information type [17:08:11.959 widget\example_page.cfm @ line: 987] [445 ms (4 ms)] - Thirteen
information type [17:08:11.960 widget\example_page.cfm @ line: 1099] [446 ms (1 ms)] - Fourteen
information type [17:08:11.961 widget\example_page.cfm @ line: 1114] [447 ms (1 ms)] - Fifteen
Total Time: 4156ms
Total DB Time : 45ms
information type [17:08:37.412 widget\example_page.cfm @ line: 106] [549 ms (1st trace)] - One
information type [17:08:37.414 widget\example_page.cfm @ line: 137] [551 ms (2 ms)] - Two
information type [17:08:37.422 widget\example_page.cfm @ line: 212] [559 ms (8 ms)] - Three
information type [17:08:37.452 widget\example_page.cfm @ line: 443] [589 ms (30 ms)] - Five
information type [17:08:37.454 widget\example_page.cfm @ line: 451] [591 ms (2 ms)] - Six
information type [17:08:37.456 widget\example_page.cfm @ line: 465] [593 ms (2 ms)] - Seven
information type [17:08:37.462 widget\example_page.cfm @ line: 603] [599 ms (6 ms)] - Eight
information type [17:08:37.507 widget\example_page.cfm @ line: 641] [644 ms (45 ms)] - Nine
information type [17:08:37.510 widget\example_page.cfm @ line: 667] [647 ms (3 ms)] - Ten
information type [17:08:41.001 widget\example_page.cfm @ line: 786] [4138 ms (3491 ms)] - Eleven
information type [17:08:41.010 widget\example_page.cfm @ line: 926] [4147 ms (9 ms)] - Twelve
information type [17:08:41.016 widget\example_page.cfm @ line: 987] [4153 ms (6 ms)] - Thirteen
information type [17:08:41.017 widget\example_page.cfm @ line: 1099] [4155 ms (2 ms)] - Fourteen
information type [17:08:41.019 widget\example_page.cfm @ line: 1114] [4156 ms (1 ms)] - Fifteen
Let me know if there's anything else I can provide.
J

Have you opened Disk Utility>First Aid and run Verify and Repair?
Also look at these comprehensive documents for other possible solutions:
https://discussions.apple.com/docs/DOC-3521
https://discussions.apple.com/docs/DOC-3353
Ciao.
Message was edited by: OGELTHORPE

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