Hi Jan_blaha,

In general, Chrome-pdf is supposed to have good performance or response times but we are not seeing that. For us Phantom-pdf is giving good numbers. Just want to know if we are missing anything.

Hi jan_blaha,
Could you please help us here?

Thank u

The html file that is generated at c:\users.....\autocleanup folder has 48MB size. The pdf file has around 3000 pages with each record data something like this: divided into 6 columns
5/13/2020 4:00:00AM 5/13/2020 4:00:00AM 1 Generating PDF 6.178.63.58 End Point Mapper

I have tried chrome-pdf also. I am sending request using postman with response time and data set to "0". That is no limit. In JSReport server I donot see any error and neither do i get response on post man.
JSReport logs:
2020-05-21T20:06:12.811Z - debug: Base url not specified, skipping its injection.
2020-05-21T20:06:12.866Z - debug: Rendering engine handlebars using http-server strategy
2020-05-21T20:07:27.672Z - debug: Compiled template not found in the cache, compiling
2020-05-21T20:07:28.768Z - debug: Executing recipe chrome-pdf
2020-05-21T20:07:30.653Z - debug: Converting with chrome HeadlessChrome/79.0.3945.0 using dedicated-process strategy
2020-05-21T20:07:31.166Z - debug: Page request: GET (document) file:///C:/Users/VIRAJI~1.SAR/AppData/Local/Temp/jsreport/autocleanup/6c608fa7-a966-4553-930d-b9d170c7c57f-chrome-pdf.html
2020-05-21T20:26:32.794Z - debug: Page request finished: GET (document) file:///C:/Users/VIRAJI~1.SAR/AppData/Local/Temp/jsreport/autocleanup/6c608fa7-a966-4553-930d-b9d170c7c57f-chrome-pdf.html
It just stops here.

I am using the default chrome-pdf settings in jsreport config.
Please help us with this or give some pointers or directions as we are not bale to process records above > 20MB.

Hi,
Good morning
I am trying to render report using phantom-pdf for 16MB data.
with phantom-pdf using "dedicated-process" and
"templatingEngines": {
"strategy": "http-server",
"numberOfWorkers": 4,
"forkOptions": {
"execArgv": ["--max-old-space-size=6096"]
}
}
I am getting this error:
2020-05-21T19:27:19.729Z - debug: Base url not specified, skipping its injection.
2020-05-21T19:27:19.789Z - debug: Rendering engine handlebars using http-server strategy
2020-05-21T19:28:58.876Z - debug: Compiled template not found in the cache, compiling
2020-05-21T19:29:00.091Z - debug: Executing recipe phantom-pdf
2020-05-21T19:30:10.600Z - error: Rendering request 1 finished with error in 296006 ms
2020-05-21T19:30:10.603Z - error: Error when processing render request 1 Command failed: D:\JSReport\node_modules\phantomjs\lib\phantom\phantomjs.exe --ignore-ssl-errors=yes --web-security=false --ssl-protocol=any D:\JSReport\node_modules\phantom-html-to-pdf\lib\scripts\standaloneScript.js C:\Users\VIRAJI~1.SAR\AppData\Local\Temp\jsreport\autocleanup\360491ab-0000-4acb-97d1-1247a1ab59a1settings.html
Error: Command failed: D:\JSReport\node_modules\phantomjs\lib\phantom\phantomjs.exe --ignore-ssl-errors=yes --web-security=false --ssl-protocol=any D:\JSReport\node_modules\phantom-html-to-pdf\lib\scripts\standaloneScript.js C:\Users\VIRAJI~1.SAR\AppData\Local\Temp\jsreport\autocleanup\360491ab-0000-4acb-97d1-1247a1ab59a1settings.html

at ChildProcess.exithandler (child_process.js:303:12)
at ChildProcess.emit (events.js:310:20)
at maybeClose (internal/child_process.js:1021:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5)

2020-05-21T19:30:10.621Z - error: Error during processing request at http://localhost:5488/api/report

and with phantom-pdf set to "http-server", I get EConnreset error. I have used time out as 100 minutes
I have gone through your forums where it mentions about using these options to improve performance. But both the options are failing for me.
Can you please guide me here?
Thank you very much.

I am analysing the performance of phantomjs and headless chrome and in general opinion is that "headless chrome" performs faster with less memory. But the testing i have done shows opposite. Any clarification on this would be helpful....

Hi,

I have tested with all these recipes and found that phantom-pdf rendering times are quite less when compared to other two. That means phantom-pdf performs better than other two for same set of data and on the same system configuration. We have used 4 cores and 16 GB RAM.
The configurations i used for all 3 recipes are:
"electron-pdf": {
"strategy": "electron-ipc",
"numberOfWorkers": 2,
"pingTimeout": 6000000,
"timeout": 6000000
}
"templatingEngines": {
"strategy": "http-server",
"numberOfWorkers": 2,
"forkOptions": {
"execArgv": ["--max-old-space-size=6096"]
}
}
"phantom-pdf": {
"numberOfWorkers": 2,
"timeout": 6000000,
"strategy": "phantom-server"
}
"chrome-pdf": {
"strategy": "chrome-pool",
"numberOfWorkers": 2
}

Which according to you is the best report rendering recipe that we can use?
In one of the responses
https://forum.jsreport.net/topic/1559/electron-pdf-issue-in-jsreport/5, chrome-pdf is suggested. But between chrome-pdf and phantom-pdf which would be the better recipe?

Thank you in advance

This is the use case i am trying to achieve in JSReport

1. There is a webapp that renders a PDF report in a view
2. An "Export" option is provided to user to export the report as CSV
3. In JSReport, is there any rest end point or a method call using which I can export
4. I am using scripts to make data call to an external API
5. I know that I can call /api/report with ""recipe": "text"" and get a CSV report
6. If I again make this rest call when user clicks on export button, then there will be total 4 server calls from the time user made a request to generate PDF report
   6.1) First call to JSReport server by /api/report end point
   6.2) Second call by the scripts to get report data from external API
   6.3) PDF report is generated and user wants to export in CSV format
   6.4) Third call again to JSReport by /api/report end point, this time for CSV report format
   6.5) Fourth call by the scripts to get report data from external API to generate CSV report
   Is there any other way this can be achieved without having to make additional trips to JSReport to export data in CSV format?

Thanks in advance

Installed phantomjs version

phantomjs@1.9.20 install D:\jsreport-server\jsreportapp\node_modules\phantomjs

node install.js

PhantomJS not found on PATH
Download already available at C:\Users\VIRAJI~1.SAR\AppData\Local\Temp\phantomjs\phantomjs-1.9.8-windows.zip
Verified checksum of previously downloaded file
Extracting zip contents
Removing D:\jsreport-server\jsreportapp\node_modules\phantomjs\lib\phantom
Copying extracted folder C:\Users\VIRAJI~1.SAR\AppData\Local\Temp\phantomjs\phantomjs-1.9.8-windows.zip-extract-1588104820710\phantomjs-1.9.8-windows -> D:\jsreport-server\jsreportapp\node_modules\phantomjs\lib\phantom
Writing location.js file
Done. Phantomjs binary available at D:\jsreport-server\jsreportapp\node_modules\phantomjs\lib\phantom\phantomjs.exe
npm WARN pdfjs-dist@2.0.489 requires a peer of webpack@^2.0.0 || ^3.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN worker-loader@1.1.1 requires a peer of webpack@^2.0.0 || ^3.0.0 || ^4.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN jsreport-server@ No description
npm WARN jsreport-server@ No repository field.
npm WARN jsreport-server@ No license field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.1.3 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.3: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

• jsreport-phantom-pdf@2.5.1
  added 81 packages from 62 contributors and audited 3949 packages in 35.243s

7 packages are looking for funding
run npm fund for details

found 36 vulnerabilities (13 low, 16 moderate, 7 high)
run npm audit fix to fix them, or npm audit for details

JSreport Config:

{
"httpPort": 5488,
"store": {
"provider": "fs"
},
"blobStorage": {
"provider": "fs"
},
"logger": {
"console": {
"transport": "console",
"level": "debug"
},
"file": {
"transport": "file",
"level": "info",
"filename": "logs/reporter.log"
},
"error": {
"transport": "file",
"level": "error",
"filename": "logs/error.log"
}
},
"allowLocalFilesAccess": true,
"reportTimeout": 360000,
"chrome": {
"strategy": "chrome-pool"
},
"templatingEngines": {
"strategy": "http-server",
"numberOfWorkers": 8
},
"extensions": {
"phantom-pdf": {
"strategy": "phantom-server",
"numberOfWorkers": 8
},
"electron-pdf": {
"pingTimeout": 60000,
"timeout": 180000,
"portLeftBoundary": 1000,
"portRightBoundary": 2000,
"strategy": "electron-server",
"numberOfWorkers": 2
},
"express": {
"inputRequestLimit": "500mb"
},
"authentication": {
"cookieSession": {},
"admin": {
"username": "admin",
"password": "password"
},
"enabled": false
},
"sample-template": {
"createSamples": true
},
"scripts": {
"strategy": "http-server"
}
}
}

I have 4 cores... that is why took 2 workers per Core/CPU