Look at the WAITFOR command. E.g. — wait for 1 minute WAITFOR DELAY ’00:01′ — wait for 1 second WAITFOR DELAY ’00:00:01′ This command allows you a high degree of precision but is only accurate within 10ms – 16ms on a typical machine as it relies on GetTickCount. So, for example, the call WAITFOR DELAY … Read more
It blocks the thread. If you look in Modules/timemodule.c in the Python source, you’ll see that in the call to floatsleep(), the substantive part of the sleep operation is wrapped in a Py_BEGIN_ALLOW_THREADS and Py_END_ALLOW_THREADS block, allowing other threads to continue to execute while the current one sleeps. You can also test this with a … Read more
Like this: sleep(num_secs) The num_secs value can be an integer or float. Also, if you’re writing this within a Rails app, or have included the ActiveSupport library in your project, you can construct longer intervals using the following convenience syntax: sleep(4.minutes) # or, even longer… sleep(2.hours); sleep(3.days) # etc., etc. # or shorter sleep(0.5) # … Read more
The setTimeout() function is non-blocking and will return immediately. Therefore your loop will iterate very quickly and it will initiate 3-second timeout triggers one after the other in quick succession. That is why your first alerts pops up after 3 seconds, and all the rest follow in succession without any delay. You may want to … Read more
If you want to pause then use java.util.concurrent.TimeUnit: TimeUnit.SECONDS.sleep(1); To sleep for one second or TimeUnit.MINUTES.sleep(1); To sleep for a minute. As this is a loop, this presents an inherent problem – drift. Every time you run code and then sleep you will be drifting a little bit from running, say, every second. If this … Read more
Use time.sleep() from time import sleep sleep(0.05)
In C++11, you can do this with standard library facilities: #include <chrono> #include <thread> std::this_thread::sleep_for(std::chrono::milliseconds(x)); Clear and readable, no more need to guess at what units the sleep() function takes.
A wait can be “woken up” by another thread calling notify on the monitor which is being waited on whereas a sleep cannot. Also a wait (and notify) must happen in a block synchronized on the monitor object whereas sleep does not: Object mon = …; synchronized (mon) { mon.wait(); } At this point the … Read more
This delays for 2.5 seconds: import time time.sleep(2.5) Here is another example where something is run approximately once a minute: import time while True: print(“This prints once a minute.”) time.sleep(60) # Delay for 1 minute (60 seconds).
2017 — 2021 update Since 2009 when this question was asked, JavaScript has evolved significantly. All other answers are now obsolete or overly complicated. Here is the current best practice: function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } Or as a one-liner: await new Promise(r => setTimeout(r, 2000)); Or const sleep = ms … Read more