Questions tagged [real-time]

Real time computing is where a computer can act guaranteed within a specified time frame.

Real time computing is where a computer can act guaranteed within a specified time frame. For RTC being fast enough in 99% of all cases is not good enough. Real time computing means no deadlines may be missed, which means knowing precisely how long some operations take and scheduling them in such a way that deadline are always made.

This conflicts with things like automatic garbage collection which can trigger outside the users control and thus cause a missed deadline. Real, hard real time systems are hard.

60 questions
165
votes
17 answers

How do I synchronise two folders in real-time in Windows 7?

I want to synchronise two folders in real time under Windows 7. Basically, I want to monitor a folder and synchronise each change (new files, changed files, deleted files) to another drive. It has to be in real time, so it gets synchronised…
acme
  • 621
52
votes
5 answers

Are CPU clock ticks strictly periodic?

Is the frequency of a CPU a mean value of about how many clock ticks there are in a second or does it have a more strong, physical stability? In my opinion, it must be not stable nor unstable. So is there any information available about the…
Gaël Barbin
  • 1,009
33
votes
6 answers

How to output microphone directly to speakers?

I want my microphone to directly output to my laptop's speakers. I'm able to do something along these lines by recording then playing, but I want to do it live. Any suggestions how to do this?
22
votes
3 answers

What does "Windows is not a real-time operating system" mean?

I came across an application called LatencyMon, that apparently does latency monitoring. I have always understood that the more of a load you put on the processor, the less responsive, or more latent, the system becomes. However, in the second…
12
votes
3 answers

What is the use for the "realtime" priority for a process?

In my experience, setting any process to realtime will make your computer slow down to a snails pace. What is the use of this setting, if it makes your computer unuseable?
Koen027
  • 305
10
votes
2 answers

Is there a way to display a real-time image histogram of all or part of what my monitor is displaying?

I am trying to adjust brightness/contrast in photo/video editing software that does not provide image histograms. What I would like is a piece of windows software that displays a real-time histogram of all or part of what my monitor is…
cxnull
  • 101
6
votes
2 answers

Under linux, how do I find out if some specific thread is run with real-time priority?

I have a process (jackd) that runs several threads. One of the threads it runs should be in realtime, the others run on normal priorities. I'd like to check if it actually runs on realtime. What program can I use for this task?
Turion
  • 193
  • 1
  • 1
  • 6
5
votes
1 answer

Real-time option in ulimit

Calling ulimit -a returns the following: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i)…
4
votes
4 answers

What is a general term for software that replaces what you are typing in realtime?

What is a general term for a program similar to Texter, AutoHotKey, PhraseExpress or the shortcut functionality on the old Palm OS?
leeand00
  • 23,552
4
votes
3 answers

LAN version of OnLive/Gaikai

I'm patiently following news about OnLive and Gaikai type solutions, especially their (slooooow) way to Europe/Germany. I currently own a pretty beefy PC for almost games-only. But as many people my main work and internet device is a rather weak…
eric
  • 265
3
votes
1 answer

Realtime transcoding to H264+AAC in Matroska container

Scenario I have a movie library which I'm looking to make streamable to my Android tablet using VLC for playback. I want to use H264+AAC for best possible visual quality over a mobile internet connection. I also wish to use a Matroska container…
Emily L.
  • 534
  • 5
  • 13
3
votes
3 answers

Real-time graphing application for SQL data

I am looking for a free data graphing application that can pull data from MySQL and display it on a trend graph without any programming. It should use a GUI to select the data to be plotted, start time, end time etc. Ideally it could be historical…
3
votes
1 answer

VLC, realtime priority and rtkit

How can I increase the priority of VLC to some realtime level? The realtime setting inside of VLC does not seem to have any effect. I figure it nowerdays (on a modern Linux system, not a from scratch system) involves rtkit. I have already tried…
3
votes
1 answer

PuTTY log to disk in real-time?

Is there a way to have PuTTY log a session to disk in real-time?
lance
  • 1,957
3
votes
3 answers

View real time hard drive transfer rates for Mac

I am looking for a program/app that will show me the current data rate that is being written and/or read from the hard drive in real time, for the Mac. I want to see the rate at which the hard drive is reading/writing when I'm rendering video files…
v15
  • 1,985
1
2 3 4