David Fetter writes:
> On Wed, Jan 20, 2010 at 09:22:49PM +0200, Heikki Linnakangas wrote:
>>> My point is that we should replace such polling loops with something
>>> non-polling, using wait/signal or semaphores or something.
> Is this a TODO yet?
It hardly seems concrete enough for a TODO item
On Wed, Jan 20, 2010 at 09:22:49PM +0200, Heikki Linnakangas wrote:
> Tom Lane wrote:
> > Heikki Linnakangas writes:
> >> My point is that we should replace such polling loops with something
> >> non-polling, using wait/signal or semaphores or something. That gets
> >> quite a bit more complex. Yo
Tom Lane wrote:
> Heikki Linnakangas writes:
>> My point is that we should replace such polling loops with something
>> non-polling, using wait/signal or semaphores or something. That gets
>> quite a bit more complex. You'd probably still have the loop, but
>> instead of pg_usleep() you'd call som
Heikki Linnakangas writes:
> My point is that we should replace such polling loops with something
> non-polling, using wait/signal or semaphores or something. That gets
> quite a bit more complex. You'd probably still have the loop, but
> instead of pg_usleep() you'd call some new primitive functi
Tom Lane wrote:
> Heikki Linnakangas writes:
>> Streaming Replication introduces a few places with a polling pattern
>> like this (in pseudocode):
>
>> while()
>> {
>> /* Check if variable in shared has advanced beoynd X */
>> SpinLockAcquire()
>> localvar = sharedvar;
>> SpinLockRelease(
On Wed, 2010-01-20 at 20:00 +0200, Heikki Linnakangas wrote:
> Hot standby also has a polling loop where it waits for a
> transaction a transaction to die, though I'm not sure if that can be
> fit into the same model
I prefer that in the context of HS because the Startup process is
waiting for th
Heikki Linnakangas writes:
> Streaming Replication introduces a few places with a polling pattern
> like this (in pseudocode):
> while()
> {
> /* Check if variable in shared has advanced beoynd X */
> SpinLockAcquire()
> localvar = sharedvar;
> SpinLockRelease()
> if (localvar > X)
>
Andres Freund wrote:
> On Wednesday 20 January 2010 17:59:36 Tom Lane wrote:
>> Andres Freund writes:
>>> I realize its way too late in the cycle for that, but why dont we start
>>> using some library for easy cross platform atomic ops?
>> (1) there probably isn't one that does exactly what we wan
