conmon v2.2.1 Release Notes

Release date: 2026-02-12

Overview

This is a bugfix and stability release for conmon 2.2.1, reverting F-sequence behavior, addressing CPU load issues and improving test coverage for CRI-O integration.

Changes Since v2.2.0

Bug Fixes

• Fix EAGAIN busy-loop in drain_stdio() (#633, 2cf4dcd)
  • Resolved CPU load issue caused by busy-looping on EAGAIN in stdio drain operations
  • Significantly reduces CPU consumption during container I/O operations

Reverts

• Revert F-sequence behavior changes (#630)
  • Reverted PR #629: Fix k8s-file log format for terminating F-sequence (894e164)
  • Reverted PR #592: Previous F-sequence related changes (8563b0a)
  • Fixed test suite for reverted F-sequence behavior (5863a7f)
  • These changes were reverted to maintain compatibility and stability

Test Improvements

• Add CRI-O critest (#631, f8cc9d6)