We are having problems with synchronus web request calls
blocking our ASP.NET performance. Here is the setup:
We have an aspx script on Site B with a synchronous
HttpWebRequest call to access Site A (simulating accessing
a bank credit card payment gateway). The page on Site A
currently does nothing more than wait 15 seconds before
serving a page, again simulating the potential lengthy
response from such a site.
When we open four browsers on the aspx page on Site B
"simultaneously " (which in turn causes the lengthy wait
accessing Site A), only two pages get served at a time.
The first two take 15 seconds, the second two take 30
seconds. We thought maybe this was due to make the
eequests from the same IP address, but we tried the same
thing on four machines with four different IP addresses as
clients, and got the same results (first two transactions
take 15 seconds, second two take 30 seconds).
We tried several different things including asynchronous
web requests and it seemed to make no difference. Only two
requests ever got processed at one time.
We are anticipating having to process perhaps 50 of these
transactions simultaneously, and if only two are being
processed at any given moment response time would be
horrible. I'm sure we aren't the only ones trying to do
such a thing. What might we doing wrong to cause this
behavior?
Thanks,
TomR.
11648409
3  2104 
Right, and that is why we brought up four browsers on
four different machines the second time. Yet, we still
saw only two requests being serviced at any one time.
TomR -----Original Message-----
Part of the HTTP1.0 spec was that you can only have 2
connections to aserver in one outbound connection..
"TomR" <to******@yahoo .com> wrote in message
news:0e******* *************** ******@phx.gbl. .. We are having problems with synchronus web request calls
blocking our ASP.NET performance. Here is the setup:
We have an aspx script on Site B with a synchronous
HttpWebRequest call to access Site A (simulating
accessing a bank credit card payment gateway). The page on Site A
currently does nothing more than wait 15 seconds before
serving a page, again simulating the potential lengthy
response from such a site.
When we open four browsers on the aspx page on Site B
"simultaneously " (which in turn causes the lengthy wait
accessing Site A), only two pages get served at a time.
The first two take 15 seconds, the second two take 30
seconds. We thought maybe this was due to make the
eequests from the same IP address, but we tried the same
thing on four machines with four different IP addresses
as clients, and got the same results (first two
transactions take 15 seconds, second two take 30 seconds).
We tried several different things including asynchronous
web requests and it seemed to make no difference. Only
two requests ever got processed at one time.
We are anticipating having to process perhaps 50 of
these transactions simultaneously, and if only two are being
processed at any given moment response time would be
horrible. I'm sure we aren't the only ones trying to do
such a thing. What might we doing wrong to cause this
behavior?
Thanks,
TomR.
11648409
.
Hello
Try to check in machine.config
<httpRuntime> check the value for the minFreeThreads and
minFreeLocalReq uestFreeThreads attributes
<processModel > maxWorkerThread s attribute
Best Regards
"TomR" <to******@yahoo .com> wrote in message
news:0e******** *************** *****@phx.gbl.. . We are having problems with synchronus web request calls
blocking our ASP.NET performance. Here is the setup:
We have an aspx script on Site B with a synchronous
HttpWebRequest call to access Site A (simulating accessing
a bank credit card payment gateway). The page on Site A
currently does nothing more than wait 15 seconds before
serving a page, again simulating the potential lengthy
response from such a site.
When we open four browsers on the aspx page on Site B
"simultaneously " (which in turn causes the lengthy wait
accessing Site A), only two pages get served at a time.
The first two take 15 seconds, the second two take 30
seconds. We thought maybe this was due to make the
eequests from the same IP address, but we tried the same
thing on four machines with four different IP addresses as
clients, and got the same results (first two transactions
take 15 seconds, second two take 30 seconds).
We tried several different things including asynchronous
web requests and it seemed to make no difference. Only two
requests ever got processed at one time.
We are anticipating having to process perhaps 50 of these
transactions simultaneously, and if only two are being
processed at any given moment response time would be
horrible. I'm sure we aren't the only ones trying to do
such a thing. What might we doing wrong to cause this
behavior?
Thanks,
TomR.
11648409
Thanks for replying. Perhaps you could explain a little
more about how to set up multiple connection objects? Or,
reference to documentation would be helpful too.
TomR. -----Original Message-----
lol - no I mean your web server can only have 2 requests
for each connectionto that web service... normally, web service calls are
quick, but in thiscase - they are going to hog those 2 connections.. so you
should probablysetup multiple connection objects and establish a queue
for however manyconnections you'd like to have open at a time..
"TomR" <to******@yahoo .com> wrote in message
news:00******* *************** ******@phx.gbl. .. Right, and that is why we brought up four browsers on
four different machines the second time. Yet, we still
saw only two requests being serviced at any one time.
TomR
>-----Original Message-----
>Part of the HTTP1.0 spec was that you can only have 2
connections to a >server in one outbound connection..
>
>"TomR" <to******@yahoo .com> wrote in message
>news:0e******* *************** ******@phx.gbl. ..
>> We are having problems with synchronus web request
calls >> blocking our ASP.NET performance. Here is the setup:
>> We have an aspx script on Site B with a synchronous
>> HttpWebRequest call to access Site A (simulating
accessing >> a bank credit card payment gateway). The page on
Site A >> currently does nothing more than wait 15 seconds
before >> serving a page, again simulating the potential
lengthy >> response from such a site.
>>
>> When we open four browsers on the aspx page on Site B
>> "simultaneously " (which in turn causes the lengthy
wait >> accessing Site A), only two pages get served at a
time. >> The first two take 15 seconds, the second two take 30
>> seconds. We thought maybe this was due to make the
>> eequests from the same IP address, but we tried the
same >> thing on four machines with four different IP
addresses as >> clients, and got the same results (first two
transactions >> take 15 seconds, second two take 30 seconds).
>>
>> We tried several different things including
asynchronous >> web requests and it seemed to make no difference.
Only two >> requests ever got processed at one time.
>>
>> We are anticipating having to process perhaps 50 of
these >> transactions simultaneously, and if only two are
being >> processed at any given moment response time would be
>> horrible. I'm sure we aren't the only ones trying to
do >> such a thing. What might we doing wrong to cause this
>> behavior?
>>
>> Thanks,
>> TomR.
>>
>> 11648409
>>
>
>
>.
>
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