github-starred/android
2
0
Fork 0
mirror of https://github.com/bitwarden/android.git synced 2026-03-18 03:09:11 -05:00
Code Issues 144 Packages Projects Releases 116 Wiki Activity

[PR #2685] [PM-3426] Make cipher decryption faster by running in parallel #3736

New Issue
Closed
opened 2025-11-26 23:36:41 -06:00 by GiteaMirror · 0 comments
GiteaMirror commented 2025-11-26 23:36:41 -06:00
Owner
Copy Link

Original Pull Request: https://github.com/bitwarden/android/pull/2685

State: closed
Merged: No

Type of change

  • Bug fix
  • New feature development
  • Tech debt (refactoring, code cleanup, dependency upgrades, etc)
  • Build/deploy pipeline (DevOps)
  • Other

Objective

With a lot of ciphers in the vault, opening the vault (unlock/login) takes quite long (~25 seconds for my 10k cipher test vault). One of the causes seems to be that the cipher decryption runs concurrently (through async await) but not in parallel.

This PR rewrites the cipher decryption logic a bit to be both more readable and to run in parallel. On my emulator device, this brought the decryption time down to ~15 seconds. (An improvement, but there might still be a bottleneck somewhere else, since not all CPU resources were fully utilized. On the other hand, the emulator might also hinder further parallelization).

Related:
https://github.com/bitwarden/mobile/issues/579

Code changes

Screenshots

Before you submit

  • Please check for formatting errors (dotnet format --verify-no-changes) (required)
  • Please add unit tests where it makes sense to do so (encouraged but not required)
  • If this change requires a documentation update - notify the documentation team
  • If this change has particular deployment requirements - notify the DevOps team
**Original Pull Request:** https://github.com/bitwarden/android/pull/2685 **State:** closed **Merged:** No --- ## Type of change - [ ] Bug fix - [x] New feature development - [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc) - [ ] Build/deploy pipeline (DevOps) - [ ] Other ## Objective With a lot of ciphers in the vault, opening the vault (unlock/login) takes quite long (~25 seconds for my 10k cipher test vault). One of the causes seems to be that the cipher decryption runs concurrently (through async await) but not in parallel. This PR rewrites the cipher decryption logic a bit to be both more readable and to run in parallel. On my emulator device, this brought the decryption time down to ~15 seconds. (An improvement, but there might still be a bottleneck somewhere else, since not all CPU resources were fully utilized. On the other hand, the emulator might also hinder further parallelization). Related: https://github.com/bitwarden/mobile/issues/579 ## Code changes <!--Explain the changes you've made to each file or major component. This should help the reviewer understand your changes--> <!--Also refer to any related changes or PRs in other repositories--> - [CipherService.cs](https://github.com/bitwarden/mobile/compare/master...quexten:parallel-cipher-decryption?expand=1#diff-f8d20ac6245e78d9222fc49984a156e9a4e30278deb159d55744ee0962dfe220) use linq `.AsParallel()` to run the decryption in parallel ## Screenshots <!--Required for any UI changes. Delete if not applicable--> ## Before you submit - Please check for formatting errors (`dotnet format --verify-no-changes`) (required) - Please add **unit tests** where it makes sense to do so (encouraged but not required) - If this change requires a **documentation update** - notify the documentation team - If this change has particular **deployment requirements** - notify the DevOps team
GiteaMirror added the pull-request label 2025-11-26 23:36:41 -06:00
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
app:authenticator
app:password-manager
bug
bug-passkey
customer-support
duplicate
enhancement
good first issue
help wanted
needs-reply
needs-response
pull-request
Mirrored from GitHub Pull Request
 question
No Label pull-request
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
GiteaMirror ninjasurge
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: github-starred/android#3736
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?