Support Board
Date/Time: Wed, 08 Apr 2026 13:21:09 +0000
Post From: OS Timers vs SC Timers discussion again... SC Timers chart update limitations
| [2026-01-24 23:22:50] |
| Sierra_Chart Engineering - Posts: 23454 |
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This is now released in the latest prerelease 2868: In the next release we will allow this to be set as low as 0:
"Minimum Delay Between Chart Updates in Milliseconds" This is already the case: - Slightly backing off or coalescing SC timer wake-ups so they don’t fire additional update work when a chart update is already pending - Further decoupling chart update scheduling and processing from the UI thread
Chart update scheduling is done on a background thread. Chart drawing can only be done on the thread that has created the window . Otherwise, there will be problems with that at the operating system level.Study calculations can be put on another thread but that is complex and it is a planned feature but is very involved. We already know about that. This is nothing new but it is very complex to implement. And in some cases will not bring any benefit. And in nearly all cases study calculations are very small part of the process of updating the chart. Normally very insignificant and under a millisecond. It is Chart drawing which is more involved, and that is why OpenGL is supported. The transfers part of the drawing operation to the GPU. (for example when switching between SIM and non-SIM mode, or when starting/stopping replays)
In order for everything to work correctly, and there is so much more than you are probably conscious of in this area, there is a lot of different actions that must be taken. The most significant is a full recalculation of all of the charts that are receiving updated order fills but only those charts that receive updated order fills will be recalculated.In most cases, this is a very insignificant operation. Most users would not notice any interruption, enabling or disabling Trade Simulation Mode. For charts that do not need to support trading, make sure you disable Chart Trade Mode on them. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing Date Time Of Last Edit: 2026-01-24 23:25:18
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