Hi John,

We went from v14 to v15. We're also still running 32-bit server. I'm not
positive but I thought the new network layer was only available in 64-bit.
I will definitely check though. Thanks!

Brad

On 4/24/17, 2:31 PM, "Active4D-dev on behalf of Bellos, John"
<[email protected] on behalf of
[email protected]> wrote:

>I forget what version of 4D you said you came from, but if it was v13 or
>lower, try your setup with the new network layer OFF in 4D server. We've
>definitely seen some stability issues with the new network layer ON,
>using v15.4.
>
>Note that if you're using Mac 64-Bit, the new network layer is forced on
>and you can't turn it off. But on Windows 64 bit server, you can turn
>this setting off.
>
>________________________________________
>From: Active4D-dev [[email protected]] on behalf of
>Aparajita Fishman [[email protected]]
>Sent: Monday, April 24, 2017 4:29 PM
>To: Active4D Developer Discussion List
>Subject: Re: [Active4d-dev] Active4D Slowdown then Stall (weird
>A4D_HTTPD_RequestHandler_* behavior)
>
>It’s entirely possible there is some flaw in the new server code. The
>main change I made to A4D_HTTPD_RequestHandler was the correct handling
>of keep-alive connections. If you find out any more details, please post
>them here.
>
>All the best,
>
>  - Aparajita
>
>> On Apr 24, 2017, at 8:43 AM, Perkins, Bradley D <[email protected]>
>>wrote:
>>
>> Peter and Aparajita,
>>
>> Thank you both for your responses. I have been testing our development
>> system with a higher MaxThreads this morning. I haven't been able to
>> exhaust all of the threads. I was able to crash 4D through. I'll send
>> Aparajita the crash log.
>>
>> Peter, your observations are very similar to what we've seen. Under v14
>>--
>> and even with the broken keep alive feature -- we could run for a long
>> time with no problems. Reboots were usually because I had to reboot the
>> Windows server to install MS Security Patches.
>>
>> Our production system sees a fairly light load and would normally never
>> see the loads that I'm placing on it with ApacheBench unless IT is
>>running
>> a cyber scan. I'm letting it run as is with the earlier configuration to
>> see if the problem is because we've exhausted the thread pool. We
>>haven't
>> allocated an additional thread since I restarted on Saturday. Our
>> ThreadStack size was already set to 256 (docs show 128 as default).
>> As Peter notes, It could be that the problem lies elsewhere such as in
>>in
>> 4D itself.
>>
>> We upgraded hardware, OS, 4D, NTK, and Active4D. That is a lot of
>>change.
>>
>> -- Brad
>>
>> On 4/24/17, 9:09 AM, "Active4D-dev on behalf of Aparajita Fishman"
>> <[email protected] on behalf of
>> [email protected]> wrote:
>>
>>> Increase MaxThreads in the A4D_NTKConfig list. I am increasing this to
>>> 100 by default in the next release, and I am also adding code to
>>>reclaim
>>> unused threads after a configurable delay.
>>>
>>> All the best,
>>>
>>> - Aparajita
>>>
>>>> On Apr 24, 2017, at 4:51 AM, Peter Gutbrod <[email protected]>
>>>>wrote:
>>>>
>>>> Hi Brad,
>>>>
>>>> I see something similar since I've upgraded 4D-Server to V16 and
>>>>NTK/A4D
>>>> to the newest version.
>>>>
>>>> Before the server could run für month without any issue. After the
>>>> upgrade the server slows down within 1-2 days up the point, where each
>>>> request can take 10 seconds or even more. According to the 4D admin
>>>> panel there are cpu or network intensive tasks running. Server is
>>>>almost
>>>> idle, tons af free memory for 4D. Nothing suspicious in Windows
>>>> performance monitor. Rebooting 4D and the slow-down is gone -  for the
>>>> next couple of hours, then it slowly reappears.
>>>>
>>>> I realized the slowdown in a JSON API. First I thought it is something
>>>> within my A4D code, so I've calculated the time my A4D code needs to
>>>> run. But I found the slowdown happens while receiving the request.
>>>>Once
>>>> A4D starts executing the code, everything runs fast, including sending
>>>> the response.
>>>>
>>>> I've asked Rob from the pluggers, whether he had heard about slowdows
>>>> with the new version of NTK but he wasn't aware of any problems.
>>>>
>>>> In a period, where I wasn't able to restart 4D server periodically,
>>>> slowdown got so extreme, that 4D clients were unable to login due to
>>>> timeouts. In that state the only way to restart the 4D server was
>>>>with a
>>>> force quit. That convinced me, that the culprit is within 4D V16 and
>>>>not
>>>> NTK or A4D and I should wait for 4D 16.1 and until then restart 4D
>>>> Server periodically. That is why I never reported the problem here.
>>>>
>>>> As you have a similar problem but with 4D15.4 makes me wondering,
>>>> whether I'm wrong and the lastest versions of NTK and A4D might at
>>>>least
>>>> contribute to the problem.
>>>>
>>>> Hope you find the answer and share it with me.
>>>>
>>>> Greetings
>>>>
>>>> Peter Gutbrod
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