[NoQA] Add memory usage breadcrumbs and context to Sentry spans #81344

szymonzalarski98 · 2026-02-03T19:27:50Z

Explanation of Change

Fixed Issues

$ #79660
PROPOSAL:

Tests

Verify that no errors appear in the JS console
Check if app is working on iOS/Android
Check if app is working on Firefox / Safari
Check if app is working on Chromium based browsers
Leave the app for 10-15 minutes and check if you are logged out, you should not
Switch device theme to dark and the app theme to light, then do some refreshes and check if you can see theme bilnking, you should not see it

Offline tests

PR Author Checklist

I linked the correct issue in the ### Fixed Issues section above
I wrote clear testing steps that cover the changes made in this PR
- I added steps for local testing in the Tests section
- I added steps for the expected offline behavior in the Offline steps section
- I added steps to cover failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
- I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
- I tested this PR with a High Traffic account against the staging or production API to ensure there are no regressions (e.g. long loading states that impact usability).
I included screenshots or videos for tests on all platforms
I ran the tests on all platforms & verified they passed on:
- Android: Native
- Android: mWeb Chrome
- iOS: Native
- iOS: mWeb Safari
- MacOS: Chrome / Safari
I verified there are no console errors (if there's a console error not related to the PR, report it or open an issue for it to be fixed)
I verified there are no new alerts related to the canBeMissing param for useOnyx
I followed proper code patterns (see Reviewing the code)
- I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick)
- I verified that comments were added to code that is not self explanatory
- I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
- I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
  - If any non-english text was added/modified, I used JaimeGPT to get English > Spanish translation. I then posted it in #expensify-open-source and it was approved by an internal Expensify engineer. Link to Slack message:
- I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
- I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
- I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
- I verified the JSDocs style guidelines (in STYLE.md) were followed
If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
I followed the guidelines as stated in the Review Guidelines
I tested other components that can be impacted by my changes (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar are working as expected)
I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
I verified any variables that can be defined as constants (ie. in CONST.ts or at the top of the file that uses the constant) are defined as such
I verified that if a function's arguments changed that all usages have also been updated correctly
If any new file was added I verified that:
- The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
If a new CSS style is added I verified that:
- A similar style doesn't already exist
- The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG))
If new assets were added or existing ones were modified, I verified that:
- The assets are optimized and compressed (for SVG files, run npm run compress-svg)
- The assets load correctly across all supported platforms.
If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
- I verified that all the inputs inside a form are aligned with each other.
- I added Design label and/or tagged @Expensify/design so the design team can review the changes.
If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
I added unit tests for any new feature or bug fix in this PR to help automatically prevent regressions in this user flow.
If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.

Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

melvin-bot · 2026-02-03T19:27:58Z

@truph01 Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

melvin-bot · 2026-02-03T19:28:04Z

@mjasikowski Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

src/libs/telemetry/sendMemoryContext.ts

src/libs/telemetry/getMemoryInfo/types.ts

tests/unit/TelemetrySynchronizerTest.ts

src/libs/telemetry/getMemoryInfo/index.native.ts

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src/libs/telemetry/getMemoryInfo/index.native.ts

codecov · 2026-02-03T19:40:36Z

Codecov Report

❌ Looks like you've decreased code coverage for some files. Please write tests to increase, or at least maintain, the existing level of code coverage. See our documentation here for how to interpret this table.

Files with missing lines	Coverage Δ
src/CONST/index.ts	`87.50% <ø> (+0.10%)`	⬆️
src/Expensify.tsx	`84.97% <100.00%> (+0.73%)`	⬆️
src/libs/telemetry/TelemetrySynchronizer.ts	`69.86% <ø> (+20.54%)`	⬆️
...libs/telemetry/formatMemoryBreadcrumb/index.ios.ts	`100.00% <100.00%> (ø)`
.../telemetry/formatMemoryBreadcrumb/index.android.ts	`0.00% <0.00%> (ø)`
src/libs/telemetry/formatMemoryBreadcrumb/index.ts	`0.00% <0.00%> (ø)`
src/libs/telemetry/getMemoryInfo/index.native.ts	`86.95% <86.95%> (ø)`
src/libs/telemetry/getMemoryLogLevel/index.ios.ts	`42.85% <42.85%> (ø)`
...ataToolMenu/BaseRecordTroubleshootDataToolMenu.tsx	`3.12% <0.00%> (-0.33%)`	⬇️
src/libs/telemetry/sendMemoryContext.ts	`82.75% <82.75%> (ø)`
... and 3 more
... and 283 files with indirect coverage changes

trjExpensify · 2026-02-03T20:01:56Z

PR doesn’t need product input as a tooling PR. Unassigning and unsubscribing myself.

…ck-memory-usage-in-sentry-attributes-fix

mountiny · 2026-02-05T01:11:47Z

@truph01 can you review this one today?

truph01 · 2026-02-05T08:13:46Z

Reviewer Checklist

I have verified the author checklist is complete (all boxes are checked off).
I verified the correct issue is linked in the ### Fixed Issues section above
I verified testing steps are clear and they cover the changes made in this PR
- I verified the steps for local testing are in the Tests section
- I verified the steps for Staging and/or Production testing are in the QA steps section
- I verified the steps cover any possible failure scenarios (i.e. verify an input displays the correct error message if the entered data is not correct)
- I turned off my network connection and tested it while offline to ensure it matches the expected behavior (i.e. verify the default avatar icon is displayed if app is offline)
I checked that screenshots or videos are included for tests on all platforms
I included screenshots or videos for tests on all platforms
I verified that the composer does not automatically focus or open the keyboard on mobile unless explicitly intended. This includes checking that returning the app from the background does not unexpectedly open the keyboard.
I verified tests pass on all platforms & I tested again on:
- Android: HybridApp
- Android: mWeb Chrome
- iOS: HybridApp
- iOS: mWeb Safari
- MacOS: Chrome / Safari
If there are any errors in the console that are unrelated to this PR, I either fixed them (preferred) or linked to where I reported them in Slack
I verified there are no new alerts related to the canBeMissing param for useOnyx
I verified proper code patterns were followed (see Reviewing the code)
- I verified that any callback methods that were added or modified are named for what the method does and never what callback they handle (i.e. toggleReport and not onIconClick).
- I verified that comments were added to code that is not self explanatory
- I verified that any new or modified comments were clear, correct English, and explained "why" the code was doing something instead of only explaining "what" the code was doing.
- I verified any copy / text shown in the product is localized by adding it to src/languages/* files and using the translation method
- I verified all numbers, amounts, dates and phone numbers shown in the product are using the localization methods
- I verified any copy / text that was added to the app is grammatically correct in English. It adheres to proper capitalization guidelines (note: only the first word of header/labels should be capitalized), and is either coming verbatim from figma or has been approved by marketing (in order to get marketing approval, ask the Bug Zero team member to add the Waiting for copy label to the issue)
- I verified proper file naming conventions were followed for any new files or renamed files. All non-platform specific files are named after what they export and are not named "index.js". All platform-specific files are named for the platform the code supports as outlined in the README.
- I verified the JSDocs style guidelines (in STYLE.md) were followed
If a new code pattern is added I verified it was agreed to be used by multiple Expensify engineers
I verified that this PR follows the guidelines as stated in the Review Guidelines
I verified other components that can be impacted by these changes have been tested, and I retested again (i.e. if the PR modifies a shared library or component like Avatar, I verified the components using Avatar have been tested & I retested again)
I verified all code is DRY (the PR doesn't include any logic written more than once, with the exception of tests)
I verified any variables that can be defined as constants (ie. in CONST.ts or at the top of the file that uses the constant) are defined as such
If a new component is created I verified that:
- A similar component doesn't exist in the codebase
- All props are defined accurately and each prop has a /** comment above it */
- The file is named correctly
- The component has a clear name that is non-ambiguous and the purpose of the component can be inferred from the name alone
- The only data being stored in the state is data necessary for rendering and nothing else
- For Class Components, any internal methods passed to components event handlers are bound to this properly so there are no scoping issues (i.e. for onClick={this.submit} the method this.submit should be bound to this in the constructor)
- Any internal methods bound to this are necessary to be bound (i.e. avoid this.submit = this.submit.bind(this); if this.submit is never passed to a component event handler like onClick)
- All JSX used for rendering exists in the render method
- The component has the minimum amount of code necessary for its purpose, and it is broken down into smaller components in order to separate concerns and functions
If any new file was added I verified that:
- The file has a description of what it does and/or why is needed at the top of the file if the code is not self explanatory
If a new CSS style is added I verified that:
- A similar style doesn't already exist
- The style can't be created with an existing StyleUtils function (i.e. StyleUtils.getBackgroundAndBorderStyle(theme.componentBG)
If the PR modifies code that runs when editing or sending messages, I tested and verified there is no unexpected behavior for all supported markdown - URLs, single line code, code blocks, quotes, headings, bold, strikethrough, and italic.
If the PR modifies a generic component, I tested and verified that those changes do not break usages of that component in the rest of the App (i.e. if a shared library or component like Avatar is modified, I verified that Avatar is working as expected in all cases)
If the PR modifies a component related to any of the existing Storybook stories, I tested and verified all stories for that component are still working as expected.
If the PR modifies a component or page that can be accessed by a direct deeplink, I verified that the code functions as expected when the deeplink is used - from a logged in and logged out account.
If the PR modifies the UI (e.g. new buttons, new UI components, changing the padding/spacing/sizing, moving components, etc) or modifies the form input styles:
- I verified that all the inputs inside a form are aligned with each other.
- I added Design label and/or tagged @Expensify/design so the design team can review the changes.
If a new page is added, I verified it's using the ScrollView component to make it scrollable when more elements are added to the page.
For any bug fix or new feature in this PR, I verified that sufficient unit tests are included to prevent regressions in this flow.
If the main branch was merged into this PR after a review, I tested again and verified the outcome was still expected according to the Test steps.
I have checked off every checkbox in the PR reviewer checklist, including those that don't apply to this PR.

Screenshots/Videos

Android: HybridApp

Screen.Recording.2026-02-06.at.23.18.18.mov

Android: mWeb Chrome

iOS: HybridApp

Screen.Recording.2026-02-06.at.23.19.28.mov

iOS: mWeb Safari

MacOS: Chrome / Safari

Screen.Recording.2026-02-05.at.15.44.01.mov

truph01 · 2026-02-05T08:52:49Z

@szymonzalarski98 In Android simulator, I have this log result:

{
    "category": "system.memory",
    "message": "RAM Check: 715MB / 192MB limit",
    "level": "error",
    "timestamp": 1770281349.4,
    "data": {
        "usedMemoryBytes": 749479936,
        "usedMemoryMB": 715,
        "totalMemoryBytes": 3126251520,
        "maxMemoryBytes": 201326592,
        "usagePercentage": 372.27,
        "freeMemoryBytes": 2376771584,
        "freeMemoryMB": 2267,
        "freeMemoryPercentage": 76.03,
        "platform": "android"
    }
}

The usagePercentage is 372 and the log level is always error.

szymonzalarski98 · 2026-02-05T16:55:13Z

@szymonzalarski98 In Android simulator, I have this log result:

{
    "category": "system.memory",
    "message": "RAM Check: 715MB / 192MB limit",
    "level": "error",
    "timestamp": 1770281349.4,
    "data": {
        "usedMemoryBytes": 749479936,
        "usedMemoryMB": 715,
        "totalMemoryBytes": 3126251520,
        "maxMemoryBytes": 201326592,
        "usagePercentage": 372.27,
        "freeMemoryBytes": 2376771584,
        "freeMemoryMB": 2267,
        "freeMemoryPercentage": 76.03,
        "platform": "android"
    }
}

The usagePercentage is 372 and the log level is always error.

Thank you, I've pushed fixes for this one

mountiny · 2026-02-05T23:08:09Z

@szymonzalarski98 Please comment on the AI comments and resolve them if there is nothing you want to discuss with the C+ or internal engineer

szymonzalarski98 · 2026-02-05T23:21:18Z

@szymonzalarski98 Please comment on the AI comments and resolve them if there is nothing you want to discuss with the C+ or internal engineer

Done, resolved all conversations with AI, left some comments, don't need to discuss it with other engineer.

mountiny · 2026-02-05T23:36:00Z

@truph01 can you retest please?

truph01 · 2026-02-06T16:13:10Z

Testing again

truph01 · 2026-02-06T16:29:36Z

src/libs/telemetry/sendMemoryContext.ts

+             *   - Thresholds: >600MB error, >300MB warning (supports iPhone 8+)
+             *   - Note: iPhone 8/X jetsam ~300-350MB, iPhone 11+ ~400-600MB
+             */
+            if (memoryInfo.platform === 'web') {


Would it make sense to introduce a utility function like getLogLevel(memoryInfo: MemoryInfo), with platform-specific implementations (.web.ts, .ios.ts, .android.ts), instead of branching on memoryInfo.platform here?

truph01 · 2026-02-06T16:30:20Z

src/libs/telemetry/sendMemoryContext.ts

+            // Build breadcrumb message based on platform
+            let breadcrumbMessage: string;
+            if (memoryInfo.platform === 'web') {
+                const maxMB = memoryInfo.maxMemoryBytes ? Math.round(memoryInfo.maxMemoryBytes / (1024 * 1024)) : '?';
+                breadcrumbMessage = `RAM Check: ${usedMemoryMB ?? '?'}MB / ${maxMB}MB limit`;
+            } else if (memoryInfo.platform === 'android') {
+                const usagePercent = memoryInfo.usagePercentage?.toFixed(0) ?? '?';
+                breadcrumbMessage = `RAM Check: ${usedMemoryMB ?? '?'}MB used (${usagePercent}% device RAM)`;
+            } else {
+                breadcrumbMessage = `RAM Check: ${usedMemoryMB ?? '?'}MB used (iOS - no limit API)`;
+            }


Same comment as https://github.com/Expensify/App/pull/81344/changes#r2774970987

truph01 · 2026-02-06T16:45:23Z

@szymonzalarski98 I just left two comments

szymonzalarski98 · 2026-02-06T16:46:18Z

@truph01 On it, thanks

szymonzalarski98 · 2026-02-06T18:03:08Z

@truph01 PR updated

truph01 · 2026-02-09T09:20:06Z

Thanks @szymonzalarski98

Does this PR need QA test steps so that they can test it on Sentry? If so, could you update the PR's author checklist for it?

szymonzalarski98 · 2026-02-09T10:16:54Z

Thanks @szymonzalarski98

Does this PR need QA test steps so that they can test it on Sentry? If so, could you update the PR's author checklist for it?

I think QA tests are not needed, I've updated the PR description

github-actions · 2026-02-09T11:08:14Z

🚧 @mjasikowski has triggered a test Expensify/App build. You can view the workflow run here.

github-actions · 2026-02-09T11:11:58Z

🧪🧪 Use the links below to test this adhoc build on Android, iOS, and Web. Happy testing! 🧪🧪
Built from App PR #81344.

Android 🤖	iOS 🍎
https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-android-Adhoc-acaf778-4a4ab63cf62d2fa78728519ce35ff13970565cd4/index.html	https://ad-hoc-expensify-cash.s3.us-east-1.amazonaws.com/rock-artifacts/ad-hoc/rock-ios-device-AdHoc-acaf778-a5c27c57c97b7d866e284ba0b0adece4a2443dd9/index.html

Web 🕸️
https://81344.pr-testing.expensify.com

👀 View the workflow run that generated this build 👀

mountiny · 2026-02-09T13:50:31Z

@szymonzalarski98 @truph01 This was reverted due to the fire it caused last week, did we make sure to test that the same issues are not present?

szymonzalarski98 · 2026-02-09T13:58:49Z

@szymonzalarski98 @truph01 This was reverted due to the fire it caused last week, did we make sure to test that the same issues are not present?

I haven't noticed any problems with being logged out automatically or with the theme flickering. Recently, the problem was most likely caused by the use of the Log method by onyx initialization, but now we don't use logging.

OSBotify · 2026-02-10T07:24:34Z

🚀 Deployed to staging by https://github.com/mjasikowski in version: 9.3.16-0 🚀

platform	result
🕸 web 🕸	success ✅
🤖 android 🤖	success ✅
🍎 iOS 🍎	success ✅

szymonzalarski98 added 2 commits February 3, 2026 20:16

Add memory usage breadcrumbs and context to Sentry spans

bfb74b4

Lint and prettier fixes

f52a566

szymonzalarski98 requested review from a team as code owners February 3, 2026 19:27

melvin-bot bot assigned szymonzalarski98 Feb 3, 2026

melvin-bot bot requested review from trjExpensify and truph01 and removed request for a team February 3, 2026 19:27

melvin-bot bot requested review from a team and mjasikowski and removed request for a team February 3, 2026 19:27

szymonzalarski98 mentioned this pull request Feb 3, 2026

Capture Periodic Memory Telemetry #79660

Open