Re: CVS commit: [matt-nb5-mips64] src/sys/uvm

[Matt Thomas <matt%3am-software.com@localhost>]

On Apr 11, 2012, at 7:34 PM, YAMAMOTO Takashi wrote:

> hi,
> 
>> Module Name: src
>> Committed By:        matt
>> Date:                Thu Apr 12 01:40:27 UTC 2012
>> 
>> Modified Files:
>>      src/sys/uvm [matt-nb5-mips64]: uvm_extern.h uvm_fault.c uvm_km.c
>>          uvm_meter.c uvm_pdaemon.c uvm_pdaemon.h uvm_pdpolicy.h
>>          uvm_pdpolicy_clock.c uvm_stat.c
>> 
>> Log Message:
>> Separate object-less anon pages out of the active list if there is no swap
>> device.  Make uvm_reclaimable and uvm.*estimatable understand colors and
>> kmem allocations.
> 
> i like the idea.
> 
> - why the queue is inside the pdpolicy?
> 
> - why don't you use PQ_SWAPBACKED?

that's only set when a swap slot has been allocated for it.  Since there's no 
swap, it'll never be set.

The problem I'm attacking is memory exhaustion.  Making sure that's pdaemon 
isn't consuming too many resources when it can't do anything.  the pdaemon 
would spin continuously with dirty reactivations and the above was an attempt 
to stop that.

It's still a work-in-progress.