| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | Erik Rijkers <er(at)xs4all(dot)nl>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: testing HS/SR - 1 vs 2 performance |
| Date: | 2010-04-16 11:47:42 |
| Message-ID: | 4BC84E5E.2060006@enterprisedb.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Simon Riggs wrote:
> On Fri, 2010-04-16 at 11:29 +0300, Heikki Linnakangas wrote:
>> How does the attached patch look like? It's probably similar to what you
>> had in mind.
>
> It looks like a second version of what I'm working on and about to
> publish. I'll take that as a compliment!
>
> My patch is attached here also, for discussion.
>
> The two patches look same in their main parts, though I have quite a few
> extra tweaks in there, which you can read about in comments.
Yeah. Yours seems a lot more complex with all those extra tweaks, I
would suggest to keep it simple. I did realize one bug in my patch: I
didn't handle xid wraparound correctly in the binary search, need to use
TransactionIdFollows instead of plan >.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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