microsoft / microsoft/usersim

KfRaiseIrql usersim API performance renders it hard to use in stress

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Dominant language
C++
Stars
105
Forks
34
Avg merge
3d 39m
Merged PRs (30d)
5

Description

In kernel mode, this is a relatively light weight API. The usersim version is very heavy and causes tests to timeout due to cost.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the usersim implementation of KfRaiseIrql and the stress tests that time out because of its cost. Compare the usersim path with the kernel-mode behavior and measure the current cost under stress. Done means the usersim API is sufficiently lightweight for those tests to complete without timeouts.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
operating-systems, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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