Sergey Konoplev <gray.ru@gmail.com> writes:
> On Fri, Dec 27, 2013 at 11:46 AM, Shiv Sharma
> <shiv.sharma.1835@gmail.com> wrote:
>> They seem to do similar things: clear dirty buffers from shared_buffers to
>> disk.
>>
>> So why have 2 processes with seperate semantics (seperate set of config
>> partms) ?
> AFAIU, they serve for completely different purposes.
We used to have a single process trying to serve both purposes, but
it didn't work tremendously well, because the criteria for when to
flush buffers are so different.
regards, tom lane
