Make WORKER_POOL_SIZE be 5 in pixel_diff and capture_skps to match the other worker scripts

Hoping that this will eliminate these kind of error messages:
	LaunchProcess: failed to execvp:
	[1:1:0818/] Bad NaCl helper startup ack (0 bytes)
	Maximum number of clients reachedMaximum number of clients reached

Bug: skia:6957
Change-Id: I8378f42b75d16c9f7617fae1d7c707bb9dd315da
Reviewed-by: Ravi Mistry <>
Commit-Queue: Ravi Mistry <>
2 files changed
tree: 297f757cffc389446c822ac38bbdbe22f6034921
  1. .gitattributes
  2. .gitignore
  3. DEPS
  5. Makefile
  9. android_ingest/
  10. android_stats/
  11. appengine_scripts/
  12. autoroll/
  13. bash/
  14. blamer/
  15. chromeextensions/
  16. codereview.settings
  18. contest/
  19. cq_watcher/
  20. ct/
  21. ct_pixel_diff/
  22. datahopper/
  23. datahopper_internal/
  24. debugger/
  25. doc/
  26. fiddle/
  27. flakiness/
  28. fuzzer/
  29. get_service_account/
  30. go/
  31. golden/
  32. grafana/
  33. infra/
  35. logmetrics/
  36. misc/
  37. monitoring/
  38. pdfium/
  39. perdiff/
  40. perf/
  41. power/
  42. prober/
  43. prometheus/
  44. proxy/
  45. pulld/
  46. push/
  47. res/
  48. run_unittests
  49. run_unittests.go
  50. scripts/
  51. skfe/
  52. skolo/
  53. status/
  54. statusv2/
  55. swarming_logger/
  56. task_scheduler/
  57. tools/
  58. tracedb/
  59. webtools/
  60. whitespace.txt
  61. whitespace2.txt

Skia-Buildbot Repository

This repo contains infrastructure code for Skia.

Getting the Source Code

The main source code repository is a Git repository hosted at Although it is possible to check out this repository directly with git clone or using gclient fetch, it is preferred to use go get so that the code is arranged correctly for Go. If this is your first time working on Go code, read about the GOPATH environment variable. Make sure that $GOPATH/bin comes before /usr/bin in your PATH. If you have GOPATH set, run:

$ go get -u -t

This fetches the repository into your $GOPATH directory along with all the Go dependencies. Note: is a custom import path and will only work if used like the examples here.

Install Node.js (not as root) and add the bin dir to your path. Optionally run npm install npm -g, as suggested by the npm getting started doc.

Install other dependencies:

$ sudo apt-get install python-django
$ go get \ \
$ npm install -g polylint bower

Build from GOPATH:

$ cd $GOPATH/src/
$ make all

Database Setup for Testing

Tests which use the database package's testutils require you to have a MySQL instance running with a database named “sk_testing” and users called “readwrite” and “test_root” with appropriate permissions for sk_testing. The ‘setup_test_db’ script in ‘go/database’ is included for convenience in setting up this test database and user.

Go tests require a local installation of MySQL. For a Debian based distro:

$ sudo apt-get install mysql-client mysql-server

Leave the root password blank.

Then, to set up local versions of the production databases:

$ cd $GOPATH/src/
$ ./setup_test_db

Running unit tests

Install Cloud SDK.

The installed python-django version must be >= 1.7. Run the following to update:

$ sudo pip install Django --upgrade

Use this command to run the presubmit tests:

$ ./run_unittests --small