| From: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | David Rowley <dgrowleyml(at)gmail(dot)com>, "Jawarilal, Manish" <Manish(dot)Jawarilal(at)dell(dot)com>, "pgsql-bugs(at)lists(dot)postgresql(dot)org" <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: pgbench bug / limitation |
| Date: | 2020-06-05 18:17:01 |
| Message-ID: | alpine.DEB.2.22.394.2006052004340.32228@pseudo |
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| Thread: | |
| Lists: | pgsql-bugs |
Hello Tom,
> More to the point, this does nothing to get around the O(N^2) cost of
> adding N FDs to the fd_set with Microsoft's implementation; so I do not
> think it's really going to fix the problem for people who want to use
> lots of connections on Windows.
> Alternatively, if we're going to get in bed with the internals of
> Windows' fd_set implementation anyway, we could implement our own
> version of FD_SET that doesn't do the de-duplication.
Yes. See attached, which I cannot test.
--
Fabien.
| Attachment | Content-Type | Size |
|---|---|---|
| pgbench-select-win-3.patch | text/x-diff | 1.1 KB |
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