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Can I make windows 7 freeze for a short period of time,
during this time I want it to perform absolutely no action.
In particular, the OS should not access to any storage device.
My original idea was to crate an interrupt, however, I think that long interrupt will cause a blue screen (which I want to prevent).
I can tell you for a fact that this is not possible - if you do this to the primary volume the machine will bluescreen because of a watchdog timer, even for a short time. If you disconnect the drive, it will immediately bluescreen. If you do this to a secondary volume, it will be surprise removed.
If you have less than a team of 10-20 very skilled NT kernel developers / testers, this idea is not even beginning to be practical. What is your scenario and what you're trying to accomplish at a high level?
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I need to get the Processes consuming CPU the most and over what time. Is this possible using any counter or script?
This at least gets you the info on who's using up the CPU. As to when, well that's another question entiresly.
I think you should configure a data collector set in Performance Monitor (PerfMon). You can collect the counter "\Process(*)% Processor Time". You can roll over the collector files for analysis later and hence see process performance over time.
When you look at the files later the graphs should make it easier to find the process that's consuming more CPU. I can't bang out a full tutorial at the moment, but a simple google search should turn up plenty of instructional info.
I will say the biggest challenge is configuring the schedule just right to make sure you capturing all the data you need. If that starts getting confusing there's a folder buried in Task Manager called PLA. That's for Performance Logs & Alerts. You should find a job there that correlates to your collector. It may be easier to work on the schedule there...
Thanks.
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How to improve performances in UIPath? What are the activities can we use in automation to increase performance speed? List out the activities that should be avoid.
First, it is always a good idea to program your RPA with visible actions to make sure that you can achieve the result that you want while seeing the workflow in action, then you can increase performance switching between the input methods (Default, SimulateType, SendWindowMessages) so you can make your RPA work in the background.
https://www.youtube.com/watch?v=fuyRjiXLaRc
As of the output methods, avoid using OCR activities as much as you can since they will slow down your process comparing to (Full text, native).
https://studio.uipath.com/docs/output-or-screen-scraping-methods
If you are working in a citrix environment and you want to interact with an element that doesn't show up immediately avoid using the delay activity since it could not show up in the amount of time that you have programmed, use the wait image activity instead.
https://www.youtube.com/watch?v=EmaQ_BLwgaw
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I am working on a machine with 4 sockets with another person that launch performance tests on one precise socket and does not want anybody to iterfer with this socket.
I would like to work transparently on the 3 remaining sockets. How could could I do that, something like prefixing all my commands with numactl... ??
My shell is zsh
Thanks!
I'm assuming this is Linux?
If yes, cpusets are probably what you're looking for. There is also a cpuset userspace package that supposedly makes it easier to use the cpusets mechanism in the kernel.
While I have almost no experience with this, I think you should be able to create a cgroup, move your shell to it, and restrict the cgroup to use only the other CPUs. This restriction would be inherited by all processes started from that shell.
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I want to measure scalability and performances of one mpi program I wrote. Till now I used the MPI_Barrier function and the stopwatch library in order to count the time. The thing is that the computation time depends a lot on the current use of my cpu and ram so all the time I get different results. Moreover my program runs on a virtual machine vmware which I need in order to use Unix.
I wanted to ask...how can I have an objective measure of the times? I want to see if my program has a good scalability or not.
In general, the way most people measure time in their MPI programs is to use MPI_WTIME since it's supposed to be a portable way to get the system time. That will give you a decent realtime result.
If you're looking to measure CPU time instead of real time, that's a very different and much more difficult problem. Usually the way most people handle that is to run their benchmarks on an otherwise quiet system.
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What is the Windows Task Manager "Handles" column a measure of? File Handles? Or Page File Pointers? Also is it bad for one program to have 8000 handles?
It's a measure of kernel handles. Kernel handles types and the functions that create them include:
File handles (CreateFile)
Memory mapped files (CreateFileMapping)
Events (CreateEvent)
Mutexes (CreateMutex)
Semaphores (CreateSemaphore)
Processes (CreateProcess)
Threads (CreateThread)
And more than I forget or have never heard of.
8000 for a single process seems incredibly excessive.
8000 for a single process does seem rather a lot, but not necessarily out of the question - it depends on the behaviour. You should think of handles as a special kind of memory - high usage is a possible warning sign, but not if it is stable. If the handle usage is stable, then it is not a sign of a leak, although you might have some optimisation to perform to get it to use fewer handles.