[haiku-bugs] Re: [Haiku] #5777: Kernel starts paging when writing to slow media
- From: "axeld" <trac@xxxxxxxxxxxx>
- Date: Thu, 22 Apr 2010 15:27:42 -0000
#5777: Kernel starts paging when writing to slow media
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Reporter: axeld | Owner: axeld
Type: bug | Status: assigned
Priority: normal | Milestone: R1/alpha2
Component: System/Kernel | Version: R1/Development
Keywords: | Blockedby:
Platform: All | Blocking:
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Comment(by axeld):
BTW the problem is the write case, not the read case, and I'm not sure how
that one should prevent the cache pressure - it would need to wait until
pages have been written to disk to actually do so, and I don't think such
a mechanism exists already.
Currently, the file cache only triggers the VM to write back the modified
pages immediately, but if the device is too slow, this can't be enough.
--
Ticket URL: <http://dev.haiku-os.org/ticket/5777#comment:3>
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