Last updated 20 June 2026
Slow performance
On average, order placement takes 100 to 200 milliseconds (0.1 to 0.2 seconds). AutoTrader Web's own server adds only about 20 milliseconds to that; most of the time is spent on your stock broker's server. If you see slower numbers, the usual causes are your network speed, load on your broker's server, or a first-of-the-day login. Measure performance by the time AutoTrader took to run an operation, averaged over at least 100 operations.
When this happens
- 1 Your network connection speed.
- 2 Load on AutoTrader's server.
- 3 Load on your stock broker's server, such as during market start or end.
- 4 Speed of execution on your broker's server.
- 5 AutoTrader needing a first-of-day login before it can run a command.
Sometimes users may find performance to be more than the average. This page explains how performance works, what can slow it down, and how to measure it correctly.
Understand performance
Our system does not do much processing. It acts as an intermediate server, so its job is to be a bridge. The actual processing happens on your stock broker’s server. Because of this, the performance numbers depend a lot on your broker server’s performance.
To calculate performance correctly, take an average of at least 100 operations.
What can affect performance
If AutoTrader is not logged in to your account, it must log in before it runs any other command. This login can take time. You may notice it on the first order of the day, or when the session expires.
AutoTrader Web’s server
Slowness caused by external factors, like your network and your broker’s trading servers, is out of our control.
One thing we can guarantee: AutoTrader Web’s server processes any command in about 20 milliseconds (0.02 seconds) on average. That is the time our own code runs. The rest of the time is taken by your stock broker’s server.
Building a highly efficient system is always our priority. So any genuine performance issue caused by our code will be investigated and improved by us.
How to measure performance
Measure performance by the time AutoTrader took to run an operation.
Some users make the mistake of using the stock price tick time to calculate performance. This is wrong. A price tick of 12:12:55 pm might reach your computer at 12:12:57 pm.
The full chain has three parts, and each has a different owner:
| Step | Who is responsible |
|---|---|
| Time for the live price to reach your computer | Your datafeed provider |
| Time for strategy execution | Your strategy’s complexity and your PC hardware/software |
| Time once your strategy calls an AutoTrader API function | AutoTrader |
Read the logs
The best way to calculate the performance number is to look at your strategy’s logs, the server activity logs, or the AutoTrader desktop client’s logs, if you use it.
Here are sample log entries. The order placement time is the gap between the “Processing line” entry and the “Successfully sent the command to server” entry.
It took approximately 0.2 seconds:
10:00:08.013 DEBUG InputFileMonitor : Processing line: PLACE_ORDER,XX9999,556874-1,REGULAR,NSE,SBIN,SELL,LIMIT,INTRADAY,16,130.50000,0.00000,0.00000,0.00000,0.00000,0,DAY,false,1593598464,-1,
10:00:08.209 INFO FileChangeListener : Successfully sent the command to server.
10:00:08.210 INFO FileChangeListener : Result: 200701001183871It took approximately 0.16 seconds:
10:30:02.431 DEBUG InputFileMonitor : Processing line: PLACE_ORDER,XX9999,556874-2,REGULAR,NSE,WIPRO,BUY,SL_MARKET,INTRADAY,6,0.00000,436.95001,0.00000,0.00000,0.00000,0,DAY,false,1593598464,-1,
10:30:02.590 INFO FileChangeListener : Successfully sent the command to server.
10:30:02.591 INFO FileChangeListener : Result: 200701001184003It took approximately 0.2 seconds:
10:00:10.564 DEBUG InputFileMonitor : Processing line: PLACE_ORDER,XX9999,556874-3,REGULAR,NSE,DMART,SELL,LIMIT,INTRADAY,2,1327.09985,0.00000,0.00000,0.00000,0.00000,0,DAY,false,1593598464,-1,
10:00:10.776 INFO FileChangeListener : Successfully sent the command to server.
10:00:10.777 INFO FileChangeListener : Result: 200701001184663