Re: Maximum reasonable bgwriter_delay

Simon Riggs wrote:
> On Tue, 2007-06-19 at 15:53 +0100, Heikki Linnakangas wrote:
>> The maximum for bgwriter_delay is currently 10 seconds. That's a long 
>> time, and in fact if you set it to a value greater than 1 s, the sleep 
>> is split into 1 s intervals with a call to AbsorbFsyncRequests in 
>> between them.
>>
>> Is there a use case for a setting > 1 s? We could simplify that logic a 
>> little bit if we just set the maximum at 1 s.
> 
> Laptop mode? Linux has it...

Granted, though you're still going to wake up every second, so I'm not 
sure how much it helps with battery life.

(/proc/sys/vm/laptop_mode won't make a difference here, AFAICS.)

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com