Skip to content

Update option-source-log-iw-size.md #171

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 30, 2025
Merged

Update option-source-log-iw-size.md #171

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e8db541
Update option-source-log-iw-size.md
orymate Oct 22, 2025
9e25391
Review fixes
Oct 29, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion content/headless/chunk/option-source-log-iw-size.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,5 +9,8 @@
| Type: | number |
| Default: | 100 |

*Description:* The size of the initial window, this value is used during flow-control. Its value cannot be lower than 100, unless the `dynamic-window-size()` option is enabled. For details on flow-control, see {{% xref "/chapter-routing-filters/concepts-flow-control/_index.md" %}}.
*Description:* Specifies the source window size - the maximum number of in-flight messages permitted by the source before flow control is enforced. This only applies when `flow-control` is enabled.

If a `max-connections()` setting is in effect (for example in case of TCP sources), the `log-iw-size()` value means the total window size, and it's divided proportionally between the connections. Its value cannot be lower than 100, unless the `dynamic-window-size()` option is enabled, which increases the effective windows size dynamically.

Note that when using `disk-buffer()`, the messages stored on disk are not included in the window size calculation. For details about the effects of this parameter, see {{% xref "/chapter-routing-filters/concepts-flow-control/_index.md" %}}.