[haiku-bugs] Re: [Haiku] #7508: Enabling multiple CPU core cuases system instability during builds etc.
- From: "tonestone57" <trac@xxxxxxxxxxxx>
- Date: Sun, 26 Jun 2011 17:26:27 -0000
#7508: Enabling multiple CPU core cuases system instability during builds etc.
-----------------------------+-----------------------
Reporter: stargatefan | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/alpha2
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by tonestone57):
You are having some type of memory issue. From your syslog:
{{{
1 KERN: write access attempted on write-protected area 0xe91e0 at
0x004b5000
2 KERN: vm_page_fault: vm_soft_fault returned error 'Permission
denied' on fault at 0x4b5ae3, ip 0x4938c0, write 1, user 1, thread 0x407e
3 KERN: vm_page_fault: thread "cc1" (16510) in team "cc1" (16510)
tried to write address 0x4b5ae3, ip 0x4938c0 ("cc1_seg0ro" +0x2938c0)
}}}
That message keeps repeating over and over. The vm in vm_page_fault
refers to virtual memory. ie, Haiku is trying to write to a write
protected (read only) memory region and it is denied access.
What to do?
This could be a Haiku or hardware issue.
You ran memtest86+ 5 times or more? It passed all 5 times?
''"I have 4gb "brand new" ddr3 actually under clocked to 1266mhz instead
of 1333. Just a timming thing with the chipset/cpu/motherboard."
''[[BR]]
Under-clocking RAM because of timing issue says you may have hardware
issue. RAM should run at default clock speed and pass memtest86+ 5 or
more times.
1st, run checkfs to see if your filesystem is corrupt.
2nd, In both your screenshots you show with swap file (swap space, virtual
memory) enabled. Try with swap space a) 0 MB (no swap) b) 500 MB and c) 2
GB. ie, zero swap, small swap and large swap to see if that changes
anything.
Right now there seems to be issue with disabling swap file.[[BR]]
http://dev.haiku-os.org/ticket/7550 [[BR]]
http://dev.haiku-os.org/ticket/7742
So, turn virtual memory off in preferences, delete swap
(/boot/common/var/swap) and run checkfs to fix inodes issue.
--
Ticket URL: <http://dev.haiku-os.org/ticket/7508#comment:23>
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