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pmap_flush_tlbs() timeout
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pmap_flush_tlbs() timeout

  • Subject: pmap_flush_tlbs() timeout
  • From: Mike Valley <email@hidden>
  • Date: Fri, 13 Nov 2009 15:32:32 -0800
  • Acceptlanguage: en-US
  • Thread-topic: pmap_flush_tlbs() timeout

Hi,

 

We’re seeing occasional issues with a virtualized copy of leopard 10.5.8 where if setting the guest virtual machine to more than one CPU (SMP), we see this error:

 

Pmap_flush_tlbs() timeout: “cpu(s) failing to respond  to interrupts , pmap=0x536500 cpus_to_respond=0x2”@SourceCache/xnu/xnu-1228.58/osfmk/i386/pmap.c:4580

 

One of our developers thought if we adjust mtxspin, it would avoid this error, but it hasn’t helped.

 

Any thoughts for how to avoid this in a virtualized environment?

 

 

Mike Valley

 

 

 

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