Re: VM tuning through fault trace gathering [with actual code]
From: Marcelo Tosatti <hidden>
Date: 2001-06-26 15:25:56
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On 26 Jun 2001, John Fremlin wrote:
Marcelo Tosatti [off-list ref] writes:quoted
On 25 Jun 2001, John Fremlin wrote:quoted
Last year I had the idea of tracing the memory accesses of the system to improve the VM - the traces could be used to test algorithms in userspace. The difficulty is of course making all memory accesses fault without destroying system performance.[...]quoted
Linux Trace Toolkit (http://www.opersys.com/LTT) does that.I dld the ltt-usenix paper and skim read it. It didn't seem to talk about page faults much. Where should I look?
Grab the source and try it out? Example page fault trace: #################################################################### Event Time PID Length Description #################################################################### Trap entry 991,299,585,597,016 678 12 TRAP: page fault; EIP : 0x40067785 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/