Hi,
On Tue, Jun 23, 2009 at 1:55 AM, Markus Wanner wrote:
>> On the other hand, I think that a semaphore should be used instead of a
>> signal
>> at least for backends to wait for walsender. This would turn around
>> the situation
>> on HPUX in some degree. In this case, the remaining problem is
Hi,
Fujii Masao wrote:
> The perfect solution seems to be to remove SA_RESTART and handle EINTR
> in an appropriate way after every syscalls. But, this is very tough job and
> has
> much influence on whole source code, so I don't think that this should be done
> as part of synch rep.
Especially
Hi,
On Sat, Jun 20, 2009 at 6:05 PM, Markus Wanner wrote:
> Reading the past messages on this topic, I realized that this problem so
> far only affects HPUX. I fear the proposed UDP/semaphores approach might
> have a similar gotcha on at least one of the supported platforms, too.
> Limits of open
Hi,
Fujii Masao wrote:
> One of the major complaints about the current synch rep patch is that
> signals are used for communication between backends and walsender.
> On some platforms, a signal doesn't interrupt sleep (i.e. poll or select
> system call), which would increase the performance overhe
Greg Stark writes:
> On Tue, Jun 16, 2009 at 12:50 PM, Fujii Masao wrote:
>> On some platforms, a signal doesn't interrupt sleep (i.e. poll or select
>> system call)
> say what?
Yup, what he said.
regards, tom lane
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On Tue, Jun 16, 2009 at 12:50 PM, Fujii Masao wrote:
> On some platforms, a signal doesn't interrupt sleep (i.e. poll or select
> system call)
say what?
--
Gregory Stark
http://mit.edu/~gsstark/resume.pdf
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To make changes to
http://archives.postgresql.org/pgsql-hackers/2008-12/msg00448.php
One of the major complaints about the current synch rep patch is that
signals are used for communication between backends and walsender.
On some platforms, a signal doesn't interrupt sleep (i.e. poll or select
system call), which wo
