From e8db541ceec76af706e376cd01f81b727e0c5f70 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?M=C3=A1t=C3=A9=20=C5=90ry?= Date: Wed, 22 Oct 2025 17:42:18 +0200 Subject: [PATCH 1/2] Update option-source-log-iw-size.md --- content/headless/chunk/option-source-log-iw-size.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/content/headless/chunk/option-source-log-iw-size.md b/content/headless/chunk/option-source-log-iw-size.md index 64bfbf4f..ce08099d 100644 --- a/content/headless/chunk/option-source-log-iw-size.md +++ b/content/headless/chunk/option-source-log-iw-size.md @@ -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:* The number of messages a given source can accept before they are forwarded to the destination. This value is used during flow-control. +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. +For details about the effects of this parameter, see {{% xref "/chapter-routing-filters/concepts-flow-control/_index.md" %}}. From 9e2539166b53501103a00c45e404a51a9869f230 Mon Sep 17 00:00:00 2001 From: Robert Fekete Date: Wed, 29 Oct 2025 15:47:01 +0100 Subject: [PATCH 2/2] Review fixes --- content/headless/chunk/option-source-log-iw-size.md | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/content/headless/chunk/option-source-log-iw-size.md b/content/headless/chunk/option-source-log-iw-size.md index ce08099d..4cdf170a 100644 --- a/content/headless/chunk/option-source-log-iw-size.md +++ b/content/headless/chunk/option-source-log-iw-size.md @@ -9,8 +9,8 @@ | Type: | number | | Default: | 100 | -*Description:* The number of messages a given source can accept before they are forwarded to the destination. This value is used during flow-control. -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. -For details about the effects of this parameter, 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" %}}.