Re: Processor usage/tuning question

From: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>
To: Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>
Cc: Israel Brewster <israel(at)ravnalaska(dot)net>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: Processor usage/tuning question
Date: 2014-10-11 04:32:56
Message-ID: CAMkU=1zVDkYQ5-otmBKPTD6rasnG-QaYTNkwQOJZqznrtPPiUQ@mail.gmail.com
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On Fri, Oct 10, 2014 at 2:04 PM, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com> wrote:

> On 10/8/14, 3:17 PM, Israel Brewster wrote:
>
>> Except that the last data point received is still valid as the aircraft's
>> current location, even if it came in several hours ago - which we may well
>> care about. That is, some users may need to see where a given aircraft (or
>> the entire fleet) is, even if an aircraft hasn't updated in a while. That
>> said, I did discuss this with my higher-ups, and got the ok to take it down
>> to four hours.
>>
>
> Note that in your explain output nothing is filtering by time at all; are
> you sure you posted the right explain?
>

I thought that as well, but then I noticed that the depesz site truncates
the data in the html view. Switch to the text view and the filter is
there, as part of the index condition, after the long ANY list.
http://explain.depesz.com/s/H5w

Cheers,

Jeff

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