memfaultd 1.21.0 (Build 3088884)

Author: Memfault Inc.

CHANGELOG.md

@@ -6,6 +6,46 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.21.0] - 2025-05-08
+
+This release adds several new metrics for tracking flash wear, as well as a new
+syslog log source. It also includes a config flag to enable legacy statsd metric
+names, and a data retention check to the upload process. For more information on
+the new metrics, check out the
+[docs](https://docs.memfault.com/docs/linux/introduction).
+
+### Added
+
+- Added metrics for tracking flash wear for mmc block devices like eMMC and SD
+  cards
+  - `diskstats/<disk_name>/bytes_written`
+  - `diskstats/<disk_name>/lifetime_pct`
+  - `diskstats/<disk_name>/manufacturer_id`
+  - `diskstats/<disk_name>/name`
+- Added syslog as a logs source. This adds support for messages in both RFC5424
+  and RFC3164 format sent over UDP. This is enabled with the `syslog` feature
+  which defaults to enabled.
+- Added a config flag to enable legacy statsd metric names. This will generate
+  metrics that follow the format generated by the `collectd` statsd server. This
+  is a helpful option for people looking to remove `collectd` as a dependency,
+  but keep the legacy format for metric keys. The config value can be found in
+  `metrics`->`statsd_server`->`legacy_key_names`.
+- Added time-based data filtering: When upgrading multiple devices' visibility
+  levels, the Memfault backend now tells `memfaultd` to only upload data from
+  the time of the change forward. This prevents unexpected large data uploads
+  from device history.
+- Added `interface/<interface>/total_bytes/{tx,rx}` metrics. These allow us to
+  track the total bytes sent over an interface over the course of an hour.
+
+### Changed
+
+- Added intelligent traffic distribution: Device initial connections now include
+  a random delay (up to 25% of the configured upload interval). This prevents
+  traffic spikes when many devices connect simultaneously, ensuring smoother
+  backend performance.
+- `ram` and `loop` disks are no longer tracked with diskstats in auto mode.
+  These are virtual disks, and provide little value when tracking metrics.
+
 ## [1.20.0] - 2025-04-10
 
 This release adds support for log filtering as well as a few bug fixes. Check
@@ -95,7 +135,7 @@ some important bugfixes.
   merging logic would fail. This would result in a case where a subset of
   configs were not possible. Fixed this logic to allow these valid use cases.
 
-## [1.17.0] - 2024-01-16
+## [1.17.0] - 2025-01-16
 
 This release introduces the new `memfaultctl write-metrics` command as well as
 some important bugfixes.
@@ -1318,3 +1358,5 @@ package][nginx-pid-report] for a discussion on the topic.
   https://github.com/memfault/memfault-linux-sdk/releases/tag/1.19.0-kirkstone
 [1.20.0]:
   https://github.com/memfault/memfault-linux-sdk/releases/tag/1.20.0-kirkstone
+[1.21.0]:
+  https://github.com/memfault/memfault-linux-sdk/releases/tag/1.21.0-kirkstone

Cargo.lock

@@ -1,3 +1,3 @@
-BUILD ID: 3018284
-GIT COMMIT: 1f741b9871
-VERSION: 1.20.0
+BUILD ID: 3088884
+GIT COMMIT: 1b9b610366
+VERSION: 1.21.0

VERSION

@@ -1,6 +1,6 @@
 [package]
 name = "memfault-ssf"
-version = "1.20.0"
+version = "1.21.0"
 edition = "2021"
 description = "Supporting crate for the Memfault memfaultd embedded Linux agent"
 homepage = "https://github.com/memfault/memfaultd"
@@ -12,6 +12,6 @@ repository = "https://github.com/memfault/memfaultd"
 [dependencies]
 futures = "0.3.31"
 log = "0.4"
-tokio = { version = "1.43.0", features = ["sync", "macros"] }
+tokio = { version = "1.43.0", features = ["sync", "macros", "rt", "net"] }
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

memfault-ssf/Cargo.toml

@@ -1,3 +1,3 @@
-BUILD ID: 3018284
-GIT COMMIT: 1f741b9871
-VERSION: 1.20.0
+BUILD ID: 3088884
+GIT COMMIT: 1b9b610366
+VERSION: 1.21.0

memfault-ssf/VERSION

@@ -1,6 +1,6 @@
 [package]
 name = "memfaultc-sys"
-version = "1.20.0"
+version = "1.21.0"
 edition = "2021"
 autobins = false
 description = "Supporting crate for the Memfault memfaultd embedded Linux agent"

memfaultc-sys/Cargo.toml

@@ -1,3 +1,3 @@
-BUILD ID: 3018284
-GIT COMMIT: 1f741b9871
-VERSION: 1.20.0
+BUILD ID: 3088884
+GIT COMMIT: 1b9b610366
+VERSION: 1.21.0