Thanks Joe,
I've googled and searched a good deal, and only found this relevant one
http://www.houseoffusion.com/cf_lists/cache/4/19/19054.htm
Is this it ?
As far as I can see, what i am experiencing
is very simlar, though slightly worse as this actually
stops the server from responding altogether
not poor performance, rather no performance ;).
bit of an opener for Denial of Service attacks no ?
ie: If I know a webserver uses a cfwddx and runs CFMX
then .. a constant hit, and down it comes.
As an example, one of the pages being converted from 4.5 to MX
has 3 CFWDDX calls on the one page. I only have to generate
a burst of 3-5 seconds on a freshly rebooted server
and MX dies.
If there is no fix, we are a bit worried
about this as the site has over 250 references to <cfwddx>
(was a fundamental design to the site).
?help :-)
> -----Original Message-----
> From: Joe Eugene [mailto:[EMAIL PROTECTED]
> Sent: Friday, 21 March 2003 4:15 PM
> To: CF-Talk
> Subject: RE: CFMX crashes with high load on cfwddx
>
>
> > Found I can bring down our MX server where cfwddx is used.
>
> This is a known problem, i am not sure if MM is doing
> anything about it.
> Some MM folks here might be able to answer the status on the
> cfwddx issue.
>
> Joe Eugene
>
>
> > -----Original Message-----
> > From: Buckland, Ramon [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, March 20, 2003 8:31 PM
> > To: CF-Talk
> > Subject: CFMX crashes with high load on cfwddx
> >
> >
> > Hi,
> >
> > Found I can bring down our MX server where cfwddx is used.
> >
> > In a nut shell,
> > obtain wddx string and convert it.
> >
> > <cfwddx action="WDDX2CFML" input="#wddxPacket#" output="st_RS">
> >
> > We use WDDX all over the site as our data layer
> > by retreiving through cfhttp.
> >
> > I tested the cfhttp connections but it all came down to
> this example.
> > (no cfhttp at all)
> >
> > -------------------------------------
> > <cfset wddxPacket = "<wddxPacket
> > version='1.0'><header/><data><struct><var
> > name='STATUS'><string>1</string></var><var
> > name='RETURNCODE'><string>no_db</string></var></struct></data></wd
> > dxPacket>">
> > <cfwddx action="WDDX2CFML" input="#wddxPacket#" output="st_RS">
> >
> > -------------------------------------
> > Put that in a cfm file and ...
> >
> > Stress testing pages by holding down ,CTRL-R in a browser (IE)
> > the server stops resonding.
> >
> > + From a fresh restart it takes about 5 minutes to bring
> the server down
> > + From a page with many wddx conversions, I am able to
> bring the server
> > down in about 5 seconds.
> >
> > * WARNING * This crashes my Dev MX Server on IIS
> > PIII 1.4Ghz , 1.3G RAM
> > IIS5 Win2k All latest patches from MS as of 10 hrs ago.
> > MX Updater 3
> >
> > Please tell me I can fix this with config changes :-)
> >
> > Symptoms of the crash are:
> > MX stops responding, IIS keeps purring
> > Restart MX a few times and eventually, IIS stops as well
> > (I even had inetinfo hang and not die until I restarted IIS
> > Admin Service)
> >
> > suggestions ?
> >
> >
> >
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