UVM crash in NetBSD/i386 PAE with 32 GB of RAM

2013-12-13 Thread Emmanuel Dreyfus
Hi Following up on i386 PAE issues: the machine works fine with PAE and SMP disabled (boot -1) when it has 16 GB of RAM. Attempting to add more memory and reach 32 GB causes the unpleasant UVM crash shown below. Does it rings a bell for someone: panic: lock error cpu0: Begin traceback...

Re: UVM crash in NetBSD/i386 PAE with 32 GB of RAM

2013-12-13 Thread Martin Husemann
On Fri, Dec 13, 2013 at 01:16:08PM +, Emmanuel Dreyfus wrote: panic: lock error Can you try this with a LOCKDEBUG kernel? Martin

Re: UVM crash in NetBSD/i386 PAE with 32 GB of RAM

2013-12-13 Thread Mindaugas Rasiukevicius
Martin Husemann mar...@duskware.de wrote: On Fri, Dec 13, 2013 at 01:16:08PM +, Emmanuel Dreyfus wrote: panic: lock error Can you try this with a LOCKDEBUG kernel? Martin Will not help. This is a trap in x86 pmap, the locking error is just a side effect, not an issue in UVM. Quite

DTrace

2013-12-13 Thread DEV Nexen
Hi everybody. I ve just compiled development branch with Dtrace support but I d like to know if it supports userland probes ? I tried to produce an object file with dtrace -G -s ... but tried to find /usr/lib/dtrace/drti.o (which really does not exist...) so it fails ... is it expected ? Or maybe

Re: mpt(4) timeout recovery improvements

2013-12-13 Thread Edgar Fuß
To test the impact on other concurrent SCSI commands It looks like the patch cures my original, real, problem, too. It probably saved my day (or those of the 250 people with their home dirs on my file server) or my entire weekend. Without it, I would have lost one RAID component at 02:05 and a

Re: UVM crash in NetBSD/i386 PAE with 32 GB of RAM

2013-12-13 Thread Emmanuel Dreyfus
Mindaugas Rasiukevicius rm...@netbsd.org wrote: If NetBSD ships PAE, we ought to fix its bugs, but generally - i386 PAE is inferior to amd64 in practically all aspects, so just do not use it if you can. The idea of i386 PAE if that if an i386 lacks some RAM, you can just drop a PAE kernel