Commit Graph

5 Commits

Author SHA1 Message Date
Dmitry S
41280a31f2 (core) Fix recording of signups, and record as telemetry too.
Summary:
Previously we failed to log signup info for users who signed up via
Google. This fixes that issue by recording it on first post-signup
visit. It also includes signup as a new telemetry event, recorded at the
same point.

Test Plan: Tested locally to see that a signup produces an appropriate log message and telemetry event.

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D3921
2023-06-15 00:15:18 -04:00
George Gevoian
a460563daf (core) Polish telemetry code
Summary: Also fixes a few small bugs with telemetry collection.

Test Plan: Server and manual tests.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D3915
2023-06-09 13:03:10 -04:00
George Gevoian
10f5f0cb37 (core) Add optional telemetry to grist-core
Summary:
Adds support for optional telemetry to grist-core.

A new environment variable, GRIST_TELEMETRY_LEVEL, controls the level of telemetry collected.

Test Plan: Server and unit tests.

Reviewers: paulfitz

Reviewed By: paulfitz

Subscribers: dsagal, anaisconce

Differential Revision: https://phab.getgrist.com/D3880
2023-06-07 12:00:51 -04:00
Dmitry S
d191859be7 (core) For exporting XLSX, do it memory-efficiently in a worker thread.
Summary:
- Excel exports were awfully memory-inefficient, causing occasional docWorker
  crashes. The fix is to use the "streaming writer" option of ExcelJS
  https://github.com/exceljs/exceljs#streaming-xlsx-writercontents. (Empirically
  on one example, max memory went down from 3G to 100M)
- It's also CPU intensive and synchronous, and can block node for tens of
  seconds. The fix is to use a worker-thread. This diff uses "piscina" library
  for a pool of threads.
- Additionally, adds ProcessMonitor that logs memory and cpu usage,
  particularly when those change significantly.
- Also introduces request cancellation, so that a long download cancelled by
  the user will cancel the work being done in the worker thread.

Test Plan:
Updated previous export tests; memory and CPU performance tested
manually by watching output of ProcessMonitor.

Difference visible in these log excerpts:

Before (total time to serve request 22 sec):
```
Telemetry processMonitor heapUsedMB=2187, heapTotalMB=2234, cpuAverage=1.13, intervalMs=17911
Telemetry processMonitor heapUsedMB=2188, heapTotalMB=2234, cpuAverage=0.66, intervalMs=5005
Telemetry processMonitor heapUsedMB=2188, heapTotalMB=2234, cpuAverage=0, intervalMs=5005
Telemetry processMonitor heapUsedMB=71, heapTotalMB=75, cpuAverage=0.13, intervalMs=5002
```
After (total time to server request 18 sec):
```
Telemetry processMonitor heapUsedMB=109, heapTotalMB=144, cpuAverage=0.5, intervalMs=5001
Telemetry processMonitor heapUsedMB=109, heapTotalMB=144, cpuAverage=1.39, intervalMs=5002
Telemetry processMonitor heapUsedMB=94, heapTotalMB=131, cpuAverage=1.13, intervalMs=5000
Telemetry processMonitor heapUsedMB=94, heapTotalMB=131, cpuAverage=1.35, intervalMs=5001
```
Note in "Before" that heapTotalMB goes up to 2GB in the first case, and "intervalMs" of 17 seconds indicates that node was unresponsive for that long. In the second case, heapTotalMB stays low, and the main thread remains responsive the whole time.

Reviewers: jarek

Reviewed By: jarek

Differential Revision: https://phab.getgrist.com/D3906
2023-06-01 12:06:48 -04:00
George Gevoian
a19ba0813a (core) Add telemetry
Test Plan: Server tests.

Reviewers: jarek

Differential Revision: https://phab.getgrist.com/D3818
2023-04-06 12:34:54 -04:00