[haiku-bugs] Re: [Haiku] #11344: KDL while running PHP testsuite: "failed to acquire spinlock %p for a long time"
- From: "bonefish" <trac@xxxxxxxxxxxx>
- Date: Fri, 17 Oct 2014 14:36:19 -0000
#11344: KDL while running PHP testsuite: "failed to acquire spinlock %p for a
long
time"
-----------------------------+----------------------------
Reporter: pulkomandy | Owner: pdziepak
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
-----------------------------+----------------------------
Comment (by bonefish):
Replying to [ticket:11344 pulkomandy]:
> Trying to analyze the spinlock results in {{{locked from 0x0000000}}}.
So it looks something went wrong with the spinlock.
Not really. The spinlock itself is just stores an integer. The ownership
info for debugging purposes is stored in separate ring buffer, which may
just be too small in this case, and thus the entry may be clobbered. We
generally don't want a large buffer for performance reasons, but you can
increase [http://cgit.haiku-
os.org/haiku/tree/src/system/kernel/smp.cpp?id=878ea71b7da4d4a25e28451c62d125f94487eb72#n116
the value] for debugging purposes.
--
Ticket URL: <https://dev.haiku-os.org/ticket/11344#comment:2>
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