#16622: kernel: system_info.used_pages don't include mapped files
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Reporter: X512 | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Platform: All |
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Comment (by waddlesplash):
This is probably an accounting/flags mix-up somewhere. Regular disk cache
memory (not mapped) is part of the "cache" memory, which the VM will
readily steal (non-dirty) pages from when it needs to allocate actual
memory. mmap'ed files actually utilize the disk cache subsystem, so
somehow I guess when files are mmap'ed, their pages are actually reserved
and can no longer be stolen. Seems like some kind of a bug indeed.
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Ticket URL: <https://dev.haiku-os.org/ticket/16622#comment:4>
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