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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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If a website is experiencing performance issues all of a sudden, what can be the reasons behind it?
According to me database can one reason or space on server can be one of few reasons, I would like to know more about it.
There can be n number of reasons and n depends on your specification
According to what you have specified you can have a look at,
System counters of webserver/appserver like cpu, memory, paging, io, disk
What changes you did to application if any, were those changes performance costly i.e. have a round of analysis on those changes to check whether any improvement is required.
If system counters are choking then check which one is bottleneck and try to resolve it.
Check all layers/tiers of application i.e. app server, database, directory etc.
if database is bottleneck then identify costly queries and apply indexes & other DB tuning
If app server is choking then, you need to identify & improve the method which is resource heavy.
Performance tuning is not a fast track process, it takes time, identify bottlenecks and try to solve it and repeat the process until you get desired performance.
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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.
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The basic requirement is pass to some command type and execution time (possibly other data as well, but that's the basic data we're concerned with at the moment) from C# code (either managed code or something that can take data periodically from the command line. and perform some statistical analysis on it: avg time for each command type, standard deviation, some charts would be nice, etc.
Something that can do this in real time might be preferable, but I guess it's also acceptable to save the data ourselves and just pass it in to be analyzed.
We could write up something for this, but it seems like there should probably be something out there for this.
Edit: Basically looking for low learning curve and able to do what's mentioned above. Basically something that would be faster to learn and use than coding it manually.
I may be off base here, but would custom Windows perfmon objects and counters do this? You could create an object for each command type, with a counter for execution time, then use Perfmon's logging, charting and reporting facilities. Or export the Perfmon data to Excel/Access for fancier stuff.