From: | Dave Page <dpage(at)pgadmin(dot)org> |
---|---|
To: | Ashesh Vashi <ashesh(dot)vashi(at)enterprisedb(dot)com> |
Cc: | Murtuza Zabuawala <murtuza(dot)zabuawala(at)enterprisedb(dot)com>, pgadmin-hackers <pgadmin-hackers(at)postgresql(dot)org> |
Subject: | Re: PATCH: To fix the issue where message panel was showing incomplete info (pgAdmin4) |
Date: | 2016-08-09 13:28:50 |
Message-ID: | CA+OCxoym1Afqb6P1fFBdbpqy1H2GnPUWZTdkKGG4fMh+0ncqwA@mail.gmail.com |
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Lists: | pgadmin-hackers |
On Tue, Aug 9, 2016 at 2:21 PM, Ashesh Vashi <ashesh(dot)vashi(at)enterprisedb(dot)com>
wrote:
> On Tue, Aug 9, 2016 at 6:47 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>
>>
>>
>> On Tue, Aug 9, 2016 at 2:07 PM, Ashesh Vashi <
>> ashesh(dot)vashi(at)enterprisedb(dot)com> wrote:
>>
>>> On Tue, Aug 9, 2016 at 6:34 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>
>>>>
>>>>
>>>> On Tue, Aug 9, 2016 at 2:01 PM, Ashesh Vashi <
>>>> ashesh(dot)vashi(at)enterprisedb(dot)com> wrote:
>>>>
>>>>> On Tue, Aug 9, 2016 at 6:28 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>>>
>>>>>> Hi
>>>>>>
>>>>>> On Tue, Aug 9, 2016 at 8:07 AM, Murtuza Zabuawala
>>>>>> <murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>>>>> > Hi,
>>>>>> >
>>>>>> > PFA patch to fix the issue where message panel was showing
>>>>>> incomplete info.
>>>>>> > We may still miss some messages from Psycopg2 driver due to limited
>>>>>> size of
>>>>>> > notices queue.
>>>>>> > (RM#1523)
>>>>>>
>>>>>> A few thoughts on this (mostly based on my discussions with Ashesh):
>>>>>>
>>>>>> 1) You seem to have removed the poll delay. I assume that is to try to
>>>>>> avoid missing messages? Can we re-introduce the delay (to avoid
>>>>>> excessive network requests), but collect messages while we're waiting?
>>>>>>
>>>>> Using thread?
>>>>> Start a thread during the timeout?
>>>>>
>>>>
>>>> Not necessarily. If we want a 2 second polling delay, we could just
>>>> sleep for 0.5 secs, collect messages, sleep for 0.5 sec, collect messages,
>>>> <repeat...> return to client.
>>>>
>>> That's a very huge delay in practical.
>>> We were hardly waiting for during poll (that was in milliseconds), but -
>>> still we were loosing a lot of the messages. (a lot more from the current
>>> implementation).
>>>
>>
>> What was the original delay? Now there appears to be none at all.
>>
> That was 10 milliseconds
>
Hmm, Ok - for some reason I thought it was much longer. Ignore that point
then :-)
--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake
EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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