3 ms·
Memory stall means re-fetching an evicted or not-yet-faulted-in page from disk, so its disk I/O, which is done asynchronously and leaves the CPU available for a
by blueflow 3y ago
Memory stall means re-fetching an evicted or not-yet-faulted-in page from disk, so its disk I/O, which is done asynchronously and leaves the CPU available for another task.
- anonymoushn 3y agoThis is not what it means. Maybe you're thinking of page faults, which happen for this reason among other reasons.
- gpderetta 3y agoI would say that the article is really talking about cache misses, not page faults.
- kazinator 3y agoA page fault stall is visible to tools like top. A task waiting for a page to be faulted in so that it can continue is descheduled, and so 0% CPU. So I don't think that's what the article is talking about.