| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: dynahash replacement for buffer table |
| Date: | 2015-01-27 04:20:36 |
| Message-ID: | CA+TgmoZDHHjQxsn18pEeDYnNXMg39R9yrGnmq7kuYcNwm-JadA@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
This developed a slight merge conflict. I've rebased the attached
version, and I also took the step of getting rid of buf_table.c, as I
think I proposed somewhere upthread. This avoids the overhead of
constructing a BufferTag only to copy it into a BufferLookupEnt, plus
some function calls and so forth. A quick-and-dirty test suggests
this might not have cut down on the 1-client overhead much, but I
think it's worth doing anyway: it's certainly saving a few cycles, and
I don't think it's complicating anything measurably.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
| Attachment | Content-Type | Size |
|---|---|---|
| chash-buftable-v2.patch | text/x-patch | 81.5 KB |
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