ConnectionPanel: Added performance colors

[janbarasek]

• new feature
• BC break? no

I would like the processing time to be displayed in color for each query. It is then easy to find slow questions and focus on them.

Some example:

Thanks!

[dg]

Good idea. I think it can be done in better way like <td style="background:rgb(xxx,xxx,xxx,opacity)", where opacity is calculated directly from time. What do you think?

[lukaspijak]

It would be good to change constants to some percent value from average or someone other statistics function. On local servers or slow shared hostings can be average query time bigger.

[janbarasek]

@dg I changed it to rgba() with opacity.

The opacity function is configurable by @lukaspijak suggestion.

What do you think now?

[dg]

It would probably be better configurable if the calculation was log(time) * value and only value was configured. One value instead of X values in $queryPerformanceScale.

[janbarasek]

Ok, implemented.

The current behavior is like:

Time	Opacity
1	0.075
11	0.269
21	0.335
31	0.376
41	0.405
51	0.429
61	0.448
71	0.464
81	0.478
91	0.490
100	0.501
200	0.575
300	0.619
400	0.650
500	0.674
600	0.694
700	0.711
800	0.725
900	0.738
1000	0.750
1100	0.760
1200	0.769
1300	0.778
1400	0.786
1500	0.794

To logarithm must be added + 1, because logarithm is negative for interval (0, 1>.

[dg]

Thanks