Well FWIW, it's not Belchertown.    I took my minimalist demo-skin and aded 
the one include line in it and boy does it grow.....

Two tests with a restart that's obvious.

On Wednesday, January 20, 2021 at 7:07:23 AM UTC-8 garrya...@gmail.com 
wrote:

> I haven’t made any changes yet but in thinking about your workaround, it 
> will be interesting to see if Cheetah actuality processes the included 
> include file or if it skips it because the outer include file’s attributes 
> are static.
>
> If Cheetah doesn’t process the inner include file, it still should be a 
> way to inject the ‘raw’ argument without having to edit ‘index.html.tmpl’. 
>  That is, my code would generate both the outer and inner include files 
> each cycle, with the outer include file containing the ‘raw’ argument as 
> you suggest.
>
> Regards,
>
> Garry Lockyer
> C: +1.250.689.0686 <(250)%20689-0686>
> E: ga...@lockyer.ca
>
>
> On Jan 20, 2021, at 06:24, bell...@gmail.com <bell...@gmail.com> wrote:
>
> Note, it is growing - just much slower.
>
>
>
> On Wednesday, 20 January 2021 at 09:13:35 UTC-5 bell...@gmail.com wrote:
>
>> Garry,
>> I might have a workaround for you. Wrap your html file in a template. 
>> something like this.
>> index.html.tmp (this is in the belchertown skin)
>> #include index_hook_after_charts.inc
>>
>> index_hook_after_charts.inc (this is the 'wrapper', naturally if you 
>> 'owned' index.html.tmpl you would not need it)
>> #include raw generated.html
>>
>> generated.html (the file you generate - name as you want)
>> your html
>>
>> I ran this on my loop 10,000 times and saw no appreciable memory increase 
>> and performed better too.
>> rich
>>
>> On Tuesday, 19 January 2021 at 22:45:42 UTC-5 garrya...@gmail.com wrote:
>>
>>> Many thanks to all for poking at this!
>>>
>>>
>>> Regards,
>>>
>>> Garry Lockyer
>>> C: +1.250.689.0686 <(250)%20689-0686>
>>> E: ga...@lockyer.ca
>>>
>>>
>>> On Jan 19, 2021, at 19:38, vince <vince...@gmail.com> wrote:
>>>
>>> Just a followup - I took belchertown out of the picture and used my 
>>> minimal demo-skin and added 'one line' that #include(d) a file generated by 
>>> Garry's service, and it 'is' leaking memory albeit less quickly than the 
>>> belchertown example.....
>>>
>>>
>>> I'll let it run overnight and we'll see what it looks like after 12 more 
>>> hours running.   The VM is set to only 1GB RAM but I'm hoping if it runs 
>>> out it'll just go into swap and stay up.    OS is debian 10 under 
>>> Vagrant/VirtualBox with 4.3.0 installed using python3 and setup.py
>>>
>>> Some mem.sdb output (date/time, units, interval, mem_size, mem_rss, 
>>> mem_share)...
>>>
>>> 1611109216 16 5 141.0625 71.734375 12.2734375
>>> 1611109516 16 5 142.5625 75.65234375 12.3359375
>>> 1611109816 16 5 144.0625 79.65625 12.3359375
>>> 1611110116 16 5 145.5625 84.5234375 12.3359375
>>> 1611110416 16 5 147.24609375 88.0859375 12.3359375
>>> 1611110716 16 5 148.49609375 91.43359375 12.3359375
>>> 1611111016 16 5 149.99609375 95.421875 12.3359375
>>> 1611111316 16 5 151.49609375 100.3359375 12.3359375
>>> 1611111616 16 5 152.99609375 103.8359375 12.3359375
>>> 1611111916 16 5 154.49609375 107.51171875 12.3359375
>>> 1611112216 16 5 155.99609375 111.5 12.3359375
>>> 1611112516 16 5 157.24609375 116.0859375 12.3359375
>>> 1611112816 16 5 158.74609375 119.5859375 12.3359375
>>> 1611113116 16 5 160.24609375 123.24609375 12.3359375
>>> 1611113416 16 5 161.74609375 127.234375 12.3359375
>>> 1611113716 16 5 163.24609375 132.11328125 12.3359375
>>>
>>>
>>>
>>> On Tuesday, January 19, 2021 at 5:21:31 PM UTC-8 bell...@gmail.com 
>>> wrote:
>>>
>>>> Ok, my standalone testcase was wrong. I think I have a valid one here, 
>>>> https://github.com/bellrichm/experiments
>>>> It just calls Cheetah.Template.Template in a loop.  If the include file 
>>>> modified attribute does not change, all seems stable. If it changes, 
>>>> memory 
>>>> usage seems to grow.
>>>> rich
>>>>
>>>> On Tuesday, 19 January 2021 at 19:16:46 UTC-5 tke...@gmail.com wrote:
>>>>
>>>>> I'm not quite following this discussion.
>>>>>
>>>>> With Cheetah, you can compile the template and save the results. I 
>>>>> believe this is what monitors the changed status of #include files. But, 
>>>>> that's not the way WeeWX uses templates. It compiles, evaluates, then 
>>>>> throws the results away. 
>>>>>
>>>>> If you use the "raw" directive in an #include, then the file will not 
>>>>> be parsed. So, how can any $ directives work?
>>>>>
>>>>> Or, does Belchertown work differently?
>>>>>
>>>>> -tk
>>>>>
>>>>> On Tue, Jan 19, 2021 at 3:55 PM bell...@gmail.com <bell...@gmail.com> 
>>>>> wrote:
>>>>>
>>>>>> I agree that something does not seem quite right with Cheetah’s 
>>>>>> ‘monitoring’ of include files. I took a different approach.
>>>>>> First, I wrote a simple WeeWX service that would perform the ‘touch’ 
>>>>>> command against the large file and a simple template that included the 
>>>>>> large file. When the file modified attribute changed, I observed the 
>>>>>> memory 
>>>>>> growth, otherwise all was stable. Also, when the file was not ‘touched’ 
>>>>>> the 
>>>>>> Cheetah processing was noticeably faster.
>>>>>> Next I wrote a standalone program to run a loop that ran the touch 
>>>>>> command and invoke Cheetah.  I ran it 3 times. Each time around loop 90, 
>>>>>> the memory growth stopped and the processing was fast as though Cheetah 
>>>>>> was 
>>>>>> using cached data. 
>>>>>> I am back to running under WeeWX to see if it will level off like it 
>>>>>> does standalone. I am also wading through the Cheetah  code and 
>>>>>> documentation.  As of now, I thoroughly confused. 
>>>>>> rich
>>>>>>
>>>>>> On Tuesday, 19 January 2021 at 15:55:38 UTC-5 garrya...@gmail.com 
>>>>>> wrote:
>>>>>>
>>>>>>> I wasn't happy leaving this is as is so I did some more testing.
>>>>>>>
>>>>>>> I looked in /home/weewx/bin/user/belchertown.py for any mention of 
>>>>>>> the 4 include files it uses to add content - nothing there.
>>>>>>>
>>>>>>> So, I looked in /home/weewx/skins/Belchertown/index.html.templ and 
>>>>>>> found 4 lines that reference the include files - they are of the form:
>>>>>>>
>>>>>>>                 #if 
>>>>>>> os.path.exists("index_hook_after_station_info.inc")
>>>>>>>                 <!-- Start of index_hook_after_station_info row -->
>>>>>>>                 <div class="row index-hook-after-station-info 
>>>>>>> border-bottom">
>>>>>>>                     #include "index_hook_after_station_info.inc"
>>>>>>>                 </div>
>>>>>>>                 <!-- End of index_hook_after_station_info row -->
>>>>>>>                 #end if
>>>>>>> That caused me to look up the Cheetah '#include'  directive:
>>>>>>>
>>>>>>> "7.6 #include
>>>>>>>
>>>>>>> Syntax:
>>>>>>> #include [raw] FILENAME_EXPR #include [raw] source=STRING_EXPR 
>>>>>>>
>>>>>>> The #include directive is used to include text from outside the 
>>>>>>> template definition. The text can come from an external file or from 
>>>>>>> a $placeholder variable. When working with external files, Cheetah will 
>>>>>>> monitor for changes to the included file and update as necessary.
>>>>>>>
>>>>>>> This example demonstrates its use with external files:
>>>>>>> #include "includeFileName.txt" 
>>>>>>> The content of "includeFileName.txt" will be parsed for Cheetah 
>>>>>>> syntax.
>>>>>>>
>>>>>>> And this example demonstrates use with $placeholder variables:
>>>>>>> #include source=$myParseText 
>>>>>>> The value of $myParseText will be parsed for Cheetah syntax. This is 
>>>>>>> not the same as simply placing the $placeholder tag ``$myParseText'' in 
>>>>>>> the 
>>>>>>> template definition. In the latter case, the value of $myParseText 
>>>>>>> would 
>>>>>>> not be parsed.
>>>>>>>
>>>>>>> By default, included text will be parsed for Cheetah tags. The 
>>>>>>> argument ``raw'' can be used to suppress the parsing.
>>>>>>>
>>>>>>> #include raw "includeFileName.txt" #include raw source=$myParseText 
>>>>>>>
>>>>>>> Cheetah wraps each chunk of #include text inside a 
>>>>>>> nested Template object. Each nested template has a copy of the main 
>>>>>>> template's searchList. However, #set variables are visible across 
>>>>>>> includes 
>>>>>>> only if the defined using the #set global keyword.
>>>>>>>
>>>>>>> All directives must be balanced in the include file. That is, if you 
>>>>>>> start a #for or #if block inside the include, you must end it in the 
>>>>>>> same 
>>>>>>> include. (This is unlike PHP, which allows unbalanced constructs in 
>>>>>>> include 
>>>>>>> files.)"
>>>>>>>
>>>>>>> I decided to insert the 'raw' argument into the 4 '#include' 
>>>>>>> directives to see if anything changed.
>>>>>>>
>>>>>>> After about 1 hour. memory usage did not grow above about 65 MB!
>>>>>>>
>>>>>>> I just removed the 'raw' argument and restarted WeeWX.  After just a 
>>>>>>> few minutes, memory usage is almost 300 MB and growing!
>>>>>>>
>>>>>>> As before, the station website is at: 
>>>>>>> https://lockyer.ca/weather/OsoyoosLakeNorthEast and the mem graphs 
>>>>>>> are at https://lockyer.ca/weather/OsoyoosLakeNorthEast/mem.
>>>>>>>
>>>>>>> So, I think I have conclusively shown  that the problem is within 
>>>>>>> Cheetah and is related to it parsing an include file.
>>>>>>>
>>>>>>> I'm going to re-insert the 'raw' arguments and carry on.
>>>>>>>
>>>>>>> Should I report this issue to the Cheetah folks or is there someone 
>>>>>>> closer to the Cheetah developers that can better do that?
>>>>>>>
>>>>>>> Regards,
>>>>>>>
>>>>>>> Garry
>>>>>>>
>>>>>>>
>>>>>>> On Monday, January 18, 2021 at 9:27:42 AM UTC-8 garrya...@gmail.com 
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Thanks!
>>>>>>>>
>>>>>>>> I think I've done all that I can to isolate the problem.
>>>>>>>>
>>>>>>>> I'm going to get back to finishing up development and add a cron 
>>>>>>>> entry to restart WeeWX every 24 hours in the wee hours of the morning.
>>>>>>>>
>>>>>>>> I will be re-deploying a Davis Pro 2 system very soon (within the 
>>>>>>>> week) and then deploying another Davis Pro 2 system shortly after 
>>>>>>>> that.  
>>>>>>>> And sometime after than, a couple of WeatherFlow Tempest systems.
>>>>>>>>
>>>>>>>> I'll post everything on GitHub soonest.
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>>
>>>>>>>> Garry
>>>>>>>> PS: Re: Ubuntu Desktop on RPi, I've been using it for development 
>>>>>>>> for the last few days and it has not crashed or hung, so I think I'm 
>>>>>>>> going 
>>>>>>>> to stay with it.  Only issue is wireless mouse lag (Raspberry Pi OS 
>>>>>>>> had 
>>>>>>>> same/similar problem) and I've ordered a Logitech MK540 wireless 
>>>>>>>> keyboard/mouse combo to see if newer hardwaere works better (than my 
>>>>>>>> dated 
>>>>>>>> Microsoft mouse).
>>>>>>>> On Sunday, January 17, 2021 at 5:40:15 PM UTC-8 vince wrote:
>>>>>>>>
>>>>>>>>> Restarted with your add-on plus belchertown both enabled - the RSS 
>>>>>>>>> is nominally growing at 4 MB per 5-minute archive period.
>>>>>>>>>
>>>>>>>>> 1610928917 139.53125 63.97265625 15.453125
>>>>>>>>> 1610929217 143.02734375 70.41796875 15.4921875
>>>>>>>>> 1610929517 144.46484375 74.43359375 15.4921875
>>>>>>>>> 1610929817 145.96484375 78.48046875 15.55078125
>>>>>>>>> 1610930117 147.46484375 82.65625 15.58203125
>>>>>>>>> 1610930417 149.09375 86.69921875 15.58203125
>>>>>>>>> 1610930717 150.34375 90.55078125 15.58203125
>>>>>>>>> 1610931017 151.84375 94.203125 15.24609375
>>>>>>>>>
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>>>>>>
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>>> .
>>> <Screen Shot 2021-01-19 at 7.33.46 PM.png>
>>>
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