3 ms·

What is IBS in "certain workloads with IBS"?

• chronogram 4y ago
  I was going to guess the Instruction Based Sampling, but that appears to be only 15 years old.
  • CUViper 4y ago
    It's a little ambiguous, but the word before is important -- "Sampling certain workloads with IBS" -- so that "with" clause is talking about the sampling method, not the workload style.
  • stonemetal12 4y ago
    I think you are right. From the context the issue was found using IBS, not that the 20 year old code was doing IBS. The issue is a dummy op used to work around an issue in old hardware gets counted as C-State residency, and "A large C-State residency value can prime the cpuidle governor to recommend a deeper C-State". So this dummy op used during switching C States makes the CPU look more idle than it is, causing more low power mode than there should be.
• deleted 4y ago
  [deleted]
• smoldesu 4y ago
  Irritable Board Syndrome?
  • m463 4y ago
    less cat5 more fiber
• AlgorithmicTime 4y ago