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Use single process model for chromium-browser

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By default chromium creates multiple renderer processes (each running
multiple threads) for each instance of a site the user visits. What we
see from `ps auxcf` output is the following:
```
\_ chromium-browse
  \_ chromium-browse
  |   \_ chromium-browse
  |       \_ chromium-browse
  |       \_ chromium-browse
  |       \_ chromium-browse
```

Using the `--single-process` option, we run all renderers in the same
process, saving the overhead of running multiple processes. `ps auxcf`
output is the following:

```
\_ chromium-browse
  \_ chromium-browse
    \_ chromium-browse
```

Performance is improved a bit and I guess that using this in large scale
Brozzler deployments will have even better performance effects.

The potential problem of `--single-process` is stability (if a renderer
crashes, the whole browser also crashes) but since we use very short-lived
instances of chromium, we don't worry about this.

Details on chromium process models:
https://www.chromium.org/developers/design-documents/process-models
This commit is contained in:
Vangelis Banos 2018-03-04 20:48:29 +00:00
parent f9834ca77d
commit 171ce8d854
1 changed files with 1 additions and 1 deletions
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2
brozzler/chrome.py
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@ -158,7 +158,7 @@ class Chrome:
'--disable-background-networking', '--disable-background-networking',
'--disable-renderer-backgrounding', '--disable-hang-monitor', '--disable-renderer-backgrounding', '--disable-hang-monitor',
'--disable-background-timer-throttling', '--mute-audio', '--disable-background-timer-throttling', '--mute-audio',
'--disable-web-sockets', '--disable-cache', '--disable-web-sockets', '--disable-cache', '--single-process',
'--window-size=1100,900', '--no-default-browser-check', '--window-size=1100,900', '--no-default-browser-check',
'--disable-first-run-ui', '--no-first-run', '--disable-first-run-ui', '--no-first-run',
'--homepage=about:blank', '--disable-direct-npapi-requests', '--homepage=about:blank', '--disable-direct-npapi-requests',