I think the tag you are talking about is:
<CFA_TagDebugOutput>
s
At 11:57 04/08/2000 -0400, you wrote:
>A bit of advice on optimization:
>
>1) Sart with exploded debugging on- while the load test is running, use a
>browser to hit various pages of the site. Copy the exploded debugging info
>from the bottom of the screen. This should give you some detail as to what
>is taking so much time (which tags are really slowing you down). You can
>then consider techniques to optimize in those areas.
>
>2) You can also set request.cfa.mode.debug = 1 at the bottom of your
>application.cfm. This will slow things down even more (it puts Spectra in
>debug mode), but you can then use a tag (can anyone refresh my memory on the
>tag name) at the bottom of a page to output detailed tag execution stacks.
>These stacks enable you to see things like if your handlers are too slow,
>etc. . .
>
>HTH!
>
>-c
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Sent: 8/4/00 9:19 AM
>Subject: RE: (Extremely) Bad CF/Spectra Performance
>
>Ng,
>
>There are many possible reasons for poor performance in Spectra -- as is
>the
>case in any programming language.
>
>Doing searching incorrectly can lead to slows, requiring too much
>dynamic work
>on heavily-hit pages, using loops to invoke a bunch of objects that
>should be
>passed as one list to cfa_contentobjectinvokemethod can cause slows, not
>using
>SQL-style queries when they should be used can cause slows, hitting
>against
>un-optimized Verity collections can cause problems, not having templates
>cached
>can cause slows, incorrectly setting up Cluster Cats can slow things
>down (as I
>found out recently), incorrectly configuring the CF engine can cause
>problems.
>
>All I can say is that when we have written Spectra apps, the performance
>has
>been acceptable.
>
>Without a detailed understand of exactly where the problem it, I think
>it will
>be hard to narrow down the problem.
>
>What may help is to have someone do some kind of application/code review
>that
>looks in more detail at these issues and/or you might pick a very
>specific slow
>page or process and ask for comments on that.
>
>Sorry I don't have a magic or simple answer. As stated above, it is
>possible to
>have poor performing Spectra apps -- but the good news is that it is
>ALSO
>possible to write well-performing Spectra apps.
>
>David
>
>-----Original Message-----
>From: Ng Cheng Kiang [mailto:[EMAIL PROTECTED]]
>Sent: Friday, August 04, 2000 3:56 AM
>To: [EMAIL PROTECTED]
>Subject: (Extremely) Bad CF/Spectra Performance
>
>
>This is a multi-part message in MIME format.
>
>------=_NextPart_000_000B_01BFFE2C.70A39C90
>Content-Type: text/plain;
> charset="iso-8859-1"
>Content-Transfer-Encoding: quoted-printable
>
>Hi!
>
>We've just begun to perform load testing on our CF/Spectra-based website
>=
>and were extremely disappointed by its performance. We are running the =
>test site on a machine with a single 750MHz CPU, 512MB RAM, SCSI2UW =
>harddisk, NT 4.0SP5, CF4.51/SP1.01. We have migrated the user database,
>=
>policy database and contentobject database to SQL 7.0. Whether the SQL =
>database is on the same machine or another machine didn't affect our =
>test results.
>
>Using SilkPerformer, we noticed that our CPU utilization on the test web
>=
>server hit 100% when we hit it with as little as 15-20 users, and < 5 =
>concurrent connections. Which is extremely bad. Most of CPU time went to
>=
>cfserver.exe. On peak loads, response time can go above 20s or more.
>
>To give some sort of comparison, we have the same website done in ASP on
>=
>the same machine, and we can easily load it with 150 users / 500 =
>concurrent connections without the CPU utilization hitting 100%, but =
>hovering around 70-80%. We were told by our CF/Spectra vendor that CF =
>performs much better than ASP, but this is obviously not the case here.
>
>We have tried turning on all the page caching for the site, but it only
>=
>made a marginal improvement. Apparently we are not the only ones getting
>=
>poor performance with the product, according to the number of past posts
>=
>here.=20
>
>Can Allaire or someone who's 'in the know' comment on this and how I can
>=
>increase the performance? 15-20 concurrent users is big joke compared to
>=
>what I can get with ASP (10x).
>
>Thanks in advnace.
>
>Regards<br>
>CK Ng
>
>
>------=_NextPart_000_000B_01BFFE2C.70A39C90
>Content-Type: text/html;
> charset="iso-8859-1"
>Content-Transfer-Encoding: quoted-printable
>
><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
>Hi!
>
>We've just begun to perform load = testing on our=20 CF/Spectra-based
>website and were extremely disappointed by its = performance. We=20 are
>running the test site on a machine with a single 750MHz CPU, 512MB =
>RAM,=20 SCSI2UW harddisk, NT 4.0SP5, CF4.51/SP1.01. We have migrated the
>user = database,=20 policy database and contentobject database to SQL 7.0.
>Whether the SQL = database=20 is on the same machine or another machine
>didn't affect our test=20 results.
>
>Using SilkPerformer, we noticed that = our CPU=20 utilization on the test
>web server hit 100% when we hit it with as = little as=20 15-20 users, and
>< 5 concurrent connections. Which is extremely bad. = Most of=20 CPU time
>went to cfserver.exe. On peak loads, response time can go above = 20s
>or=20 more.
>
>To give some sort of comparison, we = have the same=20 website done in ASP
>on the same machine, and we can easily load it with = 150=20 users / 500
>concurrent connections without the CPU utilization hitting = 100%, but=20
>hovering around 70-80%. We were told by our CF/Spectra vendor that CF =
>performs=20 much better than ASP, but this is obviously not the case = here.
>
>We have tried turning on all the page = caching for=20 the site, but it
>only made a marginal improvement. Apparently we are not = the=20 only ones
>getting poor performance with the product, according to the = number of=20
>past posts here.
>
>Can Allaire or someone who's 'in the = know' comment=20 on this and how I
>can increase the performance? 15-20 concurrent users = is big=20 joke
>compared to what I can get with ASP (10x).
>
>Thanks in advnace.
>
>Regards<br>
>CK=20 Ng
>
>------=_NextPart_000_000B_01BFFE2C.70A39C90--
>
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