Re: Fixed RM #1356

On Thu, Jun 16, 2016 at 1:34 PM, Akshay Joshi <akshay(dot)joshi(at)enterprisedb(dot)com
> wrote:

>
>
> On Thu, Jun 16, 2016 at 5:47 PM, Khushboo Vashi <
> khushboo(dot)vashi(at)enterprisedb(dot)com> wrote:
>
>>
>>
>> On Thu, Jun 16, 2016 at 5:07 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>
>>>
>>>
>>> On Thu, Jun 16, 2016 at 12:19 PM, Khushboo Vashi <
>>> khushboo(dot)vashi(at)enterprisedb(dot)com> wrote:
>>>
>>>>
>>>>
>>>> On Thu, Jun 16, 2016 at 4:42 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>>
>>>>>
>>>>>
>>>>> On Thu, Jun 16, 2016 at 12:04 PM, Akshay Joshi <
>>>>> akshay(dot)joshi(at)enterprisedb(dot)com> wrote:
>>>>>
>>>>>> Hi Dave
>>>>>>
>>>>>> On Thu, Jun 16, 2016 at 2:42 PM, Akshay Joshi <akshay.joshi@
>>>>>> enterprisedb.com> wrote:
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Jun 16, 2016 at 2:35 PM, Dave Page <dpage(at)pgadmin(dot)org>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Thanks, patch applied.
>>>>>>>>
>>>>>>>> However, whilst I was testing, I saw just how slow the tool is:
>>>>>>>>
>>>>>>>> SELECT * FROM pg_attribute
>>>>>>>>
>>>>>>>> In a PEM database, returns 8150 rows. In pgAdmin 3, this is timed
>>>>>>>> at 676ms on my laptop. In pgAdmin 4, the busy spinner runs for approx 5
>>>>>>>> seconds, then the whole UI freezes. I then have to wait a further 3 minutes
>>>>>>>> and 46 seconds(!!!!) for the operation to complete. Once loaded, scrolling
>>>>>>>> is very sluggish.
>>>>>>>>
>>>>>>>> Please make this your top priority - and if you have incremental
>>>>>>>> improvements, send them as you have them.
>>>>>>>>
>>>>>>>
>>>>>>> Sure.
>>>>>>>
>>>>>>
>>>>>> Below is my initial finding while running "SELECT * FROM
>>>>>> pg_attribute" on PEM database, returns 8498 rows:
>>>>>>
>>>>>> - Fetching data from the server side took consistent time and it
>>>>>> took 3-4 secs.
>>>>>> - Create/Render Backgrid without pagination : *1 minute*
>>>>>> - Create/Render Backgrid with pagination (50 items per page):
>>>>>> *469ms*
>>>>>> - Create/Render Backgrid with pagination (500 items per page): *3
>>>>>> secs*
>>>>>> - Create/Render Backgrid with pagination (1000 items per page): *6
>>>>>> secs*
>>>>>> - Create/Render Backgrid with pagination (3000 items per page):
>>>>>> *22 secs*
>>>>>> - Create/Render Backgrid with pagination (5000 items per page): *36
>>>>>> secs*
>>>>>>
>>>>>>
>>>>> OK, so I guess diving into Backgrid is the next step. Are there any
>>>>> profiling tools that could be used?
>>>>>
>>>>>
>>>>
>>>> Can we use infinity scrolling in case of no pagination?
>>>>
>>>
>>> How would add row work then?
>>>
>>
>> Yeah, in this case user has to wait till the last record to load. :(
>> Btw, I was thinking of https://github.com/bhvaleri/backgrid-infinator
>>
>
> This seems to be the good option.
>

No - please see my previous comment.

--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise PostgreSQL Company