Re: postgres uptime

Marc G. Fournier wrote:
> On Fri, 20 Aug 2004, Gavin Sherry wrote:
>
>>
>> On Thu, 19 Aug 2004, Alvaro Herrera wrote:
>>
>>> On Fri, Aug 20, 2004 at 09:43:13AM +0800, Christopher Kings-Lynne
>>> wrote:
>>>>> It seems that there is no way to know the postgres uptime, a sort
>>>>> of uptime() function could be usefull.
>>>>> I had recently the necessity of detect a node fail over, and the
>>>>> only way I can do it with a SQL connection is asking the engine
>>>>> uptime. Of course I can do it with PS but now that windows version
>>>>> is out I believe a platform indipendent way is required. Any
>>>>> objection to add it ?
>>>>
>>>> That sounds like a cool idea to me, although I would suggest a
>>>> function pg_uptime() that returns an interval or something.
>>>>
>>>> However, adding a new function requires a re-initdb, so it's quite
>>>> unlikely this will be in for 8.0.
>>>
>>> Is the uptime kept internally anywhere? Or even the start time?
>>
>> We do this at the start of ServerLoop():
>>
>> gettimeofday(&earlier, &tz);
>>
>> and that value isn't changed, AFAICT. However, I'm not sure why an
>> uptime is all that useful?
>
> Bragging rights? :)
>

If we ever do SNMP stuff, it will be useful for those packets as well.

LER

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Larry Rosenman http://www.lerctr.org/~ler
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