[haiku-bugs] Re: [Haiku] #5777: Kernel starts paging when writing to slow media
- From: "axeld" <trac@xxxxxxxxxxxx>
- Date: Thu, 17 Jun 2010 06:56:29 -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/alpha3
Component: System/Kernel | Version: R1/Development
Keywords: | Blockedby:
Patch: 0 | Platform: All
Blocking: |
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Comment(by axeld):
Replying to [comment:6 bonefish]:
> BTW, have you verified that the system is paging (i.e. checked the used
swap)? I'm asking because with the method described in [http://dev.haiku-
os.org/ticket/5816#comment:3] the system starts thrashing the disk at some
point and all applications accessing the disk (e.g. Deskbar or Tracker)
become very slow. There's no paging going on, though.
I have not verified it - at that moment, I was actually backing up data,
and didn't want to lose anything. Since I copied very large files (1 GB
each), the block cache didn't have that much work, so I would assume it
wasn't at fault.
Furthermore, the boot volume was neither on the source nor on the target
device. And finally, a jumping mouse cursor without CPU load could be a
sign.
> Generally, attaching more info to the ticket wouldn't harm.
Sure, but since it's that easy to reproduce, I was lazy :-)
I'll check if your work on #5816 fixes the issue.
--
Ticket URL: <http://dev.haiku-os.org/ticket/5777#comment:7>
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