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Why does `sched_setscheduler()` require root priveledges?


Why does `sched_setscheduler()` require root priveledges?

By : user2949812
Date : November 17 2020, 04:28 AM
I wish did fix the issue. Presumably because processes using a realtime scheduler can completely take over a machine and not give the CPU to other processes - which normal users should not have the power to do.
Linux allows you to do a bit more fine grained control than running as root though, you can set the CAP_SYS_NICE capability on your executable (done once, as the root user) with the command:
code :
 setcap cap_sys_nice+ep ./your_program  


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Setting User priveledges using declarative auth

Setting User priveledges using declarative auth


By : Mharris1984
Date : March 29 2020, 07:55 AM
This might help you I'm trying to decide on the privileges for my moderator role. , i would suggest first that you define some privileges like
code :
privileges do
  privilege :crud do
    includes :show, :index, :create, :edit, :update, :delete
  end

  privilege :read_only do
   includes :show, :index
  end
end
Install Python Package without Sudo/Root Priveledges but Dependencies use System lib folder

Install Python Package without Sudo/Root Priveledges but Dependencies use System lib folder


By : MadCombaticus
Date : March 29 2020, 07:55 AM
With these it helps My question is similar to How to install python packages without root privileges?, but I'm wondering if I need to install all the dependencies locally, or when I install a new package can tell the installer to use the globally installed packages when available? , virtualenv is for you
code :
virtualenv --system-site-packages
P/Invoke signature for sched_setscheduler

P/Invoke signature for sched_setscheduler


By : Domees
Date : March 29 2020, 07:55 AM
help you fix your problem As you have found, cpu_set_t is simply an array of unsigned long int. So I would declare the function like this:
code :
[DllImport("libc.so.6", SetLastError=true)]
private static extern int sched_setaffinity(
    int pid, 
    IntPtr cpusetsize, 
    ulong[] cpuset
);
Using sched_setscheduler

Using sched_setscheduler


By : xinxin zhang
Date : March 29 2020, 07:55 AM
wish help you to fix your issue To change the policy of a process from the shell you need to use chrt. To choose real time priorities you must be root. Beware that this is dangerous, raising priorities higher than the kernel interrupts will definitely have strange side effects!
C# Excel forces ReadOnly with no Edit Priveledges

C# Excel forces ReadOnly with no Edit Priveledges


By : Juan Roca Rosales
Date : March 29 2020, 07:55 AM
Hope that helps I'm honestly not sure what's going on, but I have two observations:
You are opening Excel twice -- that appears to be certain. One instance is xlApp and the other is excelApp. If you open your task manager on the instantiation of excelApp I'm pretty sure you will find two instances of Excel running. I have no idea if that's contributing to your issue or not I always found it helpful, when debugging, to make Excel visible. You can always comment that line out before you deploy, but during debugging it's nice since exposing COM objects during debugging isn't as helpful as native .NET objects -- this way you can see it in its native form
code :
string filePath = "C:\\Users\\ussatdafa\\Desktop\\Work\\Projects\\test.xlsx";
Microsoft.Office.Interop.Excel.Application excelApp =
    new Microsoft.Office.Interop.Excel.Application();

if (excelApp == null)
{
    MessageBox.Show("Excel has not been properly installed");
}
else
{
    excelApp.Visible = true;
    Workbook wb = excelApp.Workbooks.Open(filePath, 0, false, 5, "", "", false,
        XlPlatform.xlWindows, "", true, false, 0, true, false, false);
    Worksheet ws = wb.Sheets[1];

    wb.Names.Item("gv_epxsize").RefersToRange.Value = "101";
}
(Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets.get_Item(1);
Worksheet ws = wb.Sheets[1];
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