On Fri, 11 Aug 2023 at 19:14, Brian Inglis <brian.ing...@shaw.ca> wrote: > > On 2023-08-11 09:44, Cedric Blancher via Cygwin wrote: > > How can we set the scheduler priority for a Cygwin process to "higher" > > than normal on start? > > > > Basically we want a Cygwin compatible script version of the Windows > > task manager feature Name/PID--->Details--->Set priority--->Higher > > Pretend the system is BSD or Linux and web search e.g. SO for that capability, > facility, or feature, then check Cygwin with Search Packages or: > > $ cygcheck -p usr/bin/nice > Found 6 matches for usr/bin/nice
I know about nice and renice, but I don't see whether it is working or not. > coreutils-debuginfo-8.26-2 - coreutils-debuginfo: Debug info for coreutils > ... > coreutils-9.0-1 - coreutils: GNU core utilities (includes fileutils, sh-utils > and textutils) > $ cygcheck -p usr/bin/renice > Found 6 matches for usr/bin/renice > util-linux-debuginfo-2.32.1-1 - util-linux-debuginfo: Debug info for > util-linux > util-linux-debuginfo-2.33.1-1 - util-linux-debuginfo: Debug info for > util-linux > util-linux-debuginfo-2.33.1-2 - util-linux-debuginfo: Debug info for > util-linux > util-linux-2.32.1-1 - util-linux: Collection of basic system utilities > util-linux-2.33.1-1 - util-linux: Collection of basic system utilities > util-linux-2.33.1-2 - util-linux: Collection of basic system utilities > $ cygcheck -p usr/bin/chrt > Found 2 matches for usr/bin/chrt > util-linux-debuginfo-2.33.1-2 - util-linux-debuginfo: Debug info for > util-linux > util-linux-2.33.1-2 - util-linux: Collection of basic system utilities > $ cygcheck -p usr/bin/taskset > Found 2 matches for usr/bin/taskset > util-linux-debuginfo-2.33.1-2 - util-linux-debuginfo: Debug info for > util-linux > util-linux-2.33.1-2 - util-linux: Collection of basic system utilities > > so you may need to install util-linux (coreutils is already installed as a > base > package for Cygwin) then: > > $ man nice renice taskset chrt chrt does not work, the syscalls for realtime seem to be not implemented. > > You may need to run these from an elevated admin shell for other user ids, > unowned processes, or higher (negative) priority. > > It has been years since I tried these so can no longer remember if -20 > corresponds to Windows "RealTime" or if you need to use PowerShell to set > that e.g. > > $proc = Get-Process -ProcessName "..." > $proc.PriorityClass = "RealTime" > > and that needs to be done from an elevated admin (Power)Shell. > > Of course, never set that on any system except on a very idle, very I/O bound, > well tested process, such as ntpd, that needs stably fast interrupt service > and > non-preemptible cpu access for ms every few seconds, preferably on a single or > few cpus to which affinity is set. Is there anything in /proc which can tell me the current *Windows* scheduler priority level? Or a command line tool? Ced -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
