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Date/Time: Thu, 06 Feb 2025 04:58:55 +0000



Post From: Sierra chart is very laggy after update

[2024-12-04 19:20:14]
User753428 - Posts: 167
Today I had some free time so I decided to make a test and updated one of my platforms to v2716.

Then, I started testing and opened the very same chartbook in two separate instances (with my default settings) side by side, one with the upgrade to v2716 and the other with my current v2700.

The immediate result I noticed was that with v2716 the CPU load was much lower than with v2700. I got really puzzled with it because it goes against any report made by every other users.

Then I realized that there was a lag on v2716 when comparing the price movement (charts / DOMs side by side) with v2700 (both connected to the same SC server).

So, I went through the new settings on v2716 one by one and made some experiments.


To make this report shorter, in order to get a very similar performance with the two instances, I have to use the following settings:

- Timer Management - Chart Calculation/Draw Time Multiplier for Interval Delay = 0.5

- Timer Management - Maximum Interval Delay in Milliseconds = 250

- Trade DOM - Had to reduce from 50ms to 25ms (half)

- Main charts - Had to reduce from 200ms to 100ms



With this settings, I get a very similar performance out of my main two chartbooks, whereas the CPU load becomes very similar in both instances.

Just to make it clear, I tested twice with two different chartbooks (one at a time) and both with the "twin" charts and DOMs side by side.

I haven't experienced any lag with the pointer and besides having to alter the mentioned settings, everything seems normal.

this is similar to my experience. i haven't experienced any of the UI lag experienced by others in the newer versions (this may be because i have very simple charts) but the price updates (chart update interval as perceived by the human eye) is for sure slower on the newer versions.

i've been using 40ms chart update interval + 40ms Remote Buffer Delay Send Time for years now with no issue. this setting is perfect for both my trading needs and what my computer/internet is capable of from my location.

but the problem i run into when using Rui S.'s solution for this is that when i reduce the chart update interval + remote buffer delay send time in 2716 by half (so 20ms + 20ms), i start running into increased transmissiondelay due to more # of outstanding send buffers. so 40ms/40ms in v.2700 isn't the same as 20ms/20ms in v.2716.

i tried 20ms chart update interval + 40ms Remote Buffer Delay Send Time in v.2716 but when i do that, unfortunately price updates are visibly slower than at 40ms/40ms in v.2700.