Forum OpenACS Q&A: Best way to time TCL pages.

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1: Best way to time TCL pages.
Posted by Connie Hentosh on 11/29/01 07:49 PM
Bob OConnor posted a question in the "Open ACS handling heavy traffic" thread. I think it got lost in the numerous posts. I was curious about the same thing, so here is his post: 

What is the best way to time my dynamic tcl pages so I can clean up any 
time consuming selects and other code? 

I could do an
ns_log Notice "Start time..."
 at the beginning of the page and again just before
 ns_return 200 text/html $page_content 

Doing a
set now [database_to_tcl_string $db "select [db_sysdate] from dual"]
 May in itself add a bit of time to the test results...so, 

Suggestions and code snippets would be helpful. 

TIA
 -Bob 

 -- Bob OConnor, November 29, 2001

Any good tricks out there or pointers to docs that cover this?

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2: Response to Best way to time TCL pages. (response to 1)
Posted by Don Baccus on 11/29/01 09:06 PM
In the [Open]ACS 4 world, acs-developer-support will give you timings on every database operation used to build a given page - it gives a summary at the bottom of the page and a link to a page that gives details.

I don't think that backporting this to the 3.2.5 environment would be all that tough *if* you're also using the backported db api (the db api tracks the actual timing, using Tcl's "clock clicks" command, not the db).

There's a Tcl profiler available by my one quick attempt to get it to work within the AOLserver/OpenACS 4 environment failed.  Has anyone else  gotten this to work?

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3: Response to Best way to time TCL pages. (response to 1)
Posted by Jonathan Ellis on 11/29/01 11:43 PM
Getting nsprofile to work was pretty easy in 3.2.x following the instructions here although I floundered around a LOT before finding that page. No idea as to whether 4.x breaks anything somehow although since I belive it's all AOLServer code it should be okay.
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4: Response to Best way to time TCL pages. (response to 1)
Posted by carl garland on 12/14/01 07:25 PM
I have a wimpy point article here that has code that may be helpful.

https://openacs.org/wp/display/140/