Re:Nasty Lockup Issue Still Being Investigated for Linux 3.18
by Animats on Sunday November 30, 2014 @01:59PM
(#8677666)
Is this an out-of-memory lockup or something else?
Linux has a history of out-of-memory lockups where disk caching has tied up most of memory. Linux uses free memory as disk cache. When there's a need for memory, clean cache pages are reused. Sometimes the I/O systems have the cache locked at the moment there's a need for memory, resulting in an out of memory lockup. This has been fixed in the past, and broken in the past.
Linux has a history of out-of-memory lockups where disk caching has tied up most of memory. Linux uses free memory as disk cache. When there's a need for memory, clean cache pages are reused. Sometimes the I/O systems have the cache locked at the moment there's a need for memory, resulting in an out of memory lockup. This has been fixed in the past, and broken in the past.