Comment 147 for bug 1518457

As a comment to those expecting that disabling swap will prevent kswapd from doing anything, that's incorrect. kswapd also is responsible for clearing out the page cache, so even with swap disabled you'll still see it doing work, especially during heavy IO that uses the page cache. For example, copying large files from fast drives. That's completely normal. What this bug is about, is kswapd trying over and over to do its normal work, but making no progress, so it continues to use 100% cpu while the rest of the system is doing nothing. That bug should be fixed now.

If anyone continues to see *this* bug - kswapd using 100% cpu while your system is doing nothing and kswapd never recovers - you can report it here, but you should also open a new bug and reference it in your comment (this bug is fixed and closed). However, if all you see is kswapd using cpu while you're doing things - especially file IO - that isn't this bug, and it probably isn't actually a bug at all.