TL == Tom Lane [EMAIL PROTECTED] writes:
TL Bruce Momjian [EMAIL PROTECTED] writes:
If we had a majority of queries filling more than one block we would
be checkpointing like crazy and we don't normally get reports about
that.
TL [ raised eyebrow... ] And of course the
Have you seen /src/tools/fsync?
---
[EMAIL PROTECTED] wrote:
Hi, I'd like to help with the topic in the Subject: line. It seems to be a
TODO item. I've reviewed some threads discussing the matter, so I hope I've
Bruce Momjian wrote:
Have you seen /src/tools/fsync?
Now that the argument is already open, why postgres choose
on linux fdatasync? I'm understanding from other posts that
on this platform open_sync is better than fdatasync.
However I choose open_sync. During initdb why don't detect
this parameter
Gaetano,
Now that the argument is already open, why postgres choose
on linux fdatasync? I'm understanding from other posts that
on this platform open_sync is better than fdatasync.
Not necessarily. For example, here's my test results, on Linux 2.6.7,
writing to a ReiserFS mount on a
Gaetano Mendola [EMAIL PROTECTED] writes:
Now that the argument is already open, why postgres choose
on linux fdatasync? I'm understanding from other posts that
on this platform open_sync is better than fdatasync.
AFAIR, we've seen *one* test from *one* person alleging that.
And it was
Tom Lane wrote:
The tests that started this thread are pretty unconvincing in my eyes,
because they are comparing open_sync against code that fsyncs after each
one-block write. Under those circumstances, *of course* fsync will lose
(or at least do no better), because it's forcing the same
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Tom Lane wrote:
| Gaetano Mendola [EMAIL PROTECTED] writes:
|
|Now that the argument is already open, why postgres choose
|on linux fdatasync? I'm understanding from other posts that
|on this platform open_sync is better than fdatasync.
|
|
| AFAIR,
Bruce Momjian [EMAIL PROTECTED] writes:
If we had a majority of queries filling more than one block we would
be checkpointing like crazy and we don't normally get reports about
that.
[ raised eyebrow... ] And of course the 30-second-checkpoint-warning
stuff is a useless feature that no one
