* Run a Cygwin process with "higher" scheduler priority @ 2023-08-11 15:44 Cedric Blancher 2023-08-11 17:14 ` Brian Inglis 0 siblings, 1 reply; 9+ messages in thread From: Cedric Blancher @ 2023-08-11 15:44 UTC (permalink / raw) To: cygwin Good evening! 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 Ced -- Cedric Blancher <cedric.blancher@gmail.com> [https://plus.google.com/u/0/+CedricBlancher/] Institute Pasteur ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-08-11 15:44 Run a Cygwin process with "higher" scheduler priority Cedric Blancher @ 2023-08-11 17:14 ` Brian Inglis 2023-10-14 11:39 ` Cedric Blancher 0 siblings, 1 reply; 9+ messages in thread From: Brian Inglis @ 2023-08-11 17:14 UTC (permalink / raw) To: cygwin; +Cc: Cedric Blancher 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 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 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. -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-08-11 17:14 ` Brian Inglis @ 2023-10-14 11:39 ` Cedric Blancher 2023-10-14 13:47 ` Eliot Moss ` (3 more replies) 0 siblings, 4 replies; 9+ messages in thread From: Cedric Blancher @ 2023-10-14 11:39 UTC (permalink / raw) To: cygwin On Fri, 11 Aug 2023 at 19:14, Brian Inglis <Brian.Inglis@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 ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-10-14 11:39 ` Cedric Blancher @ 2023-10-14 13:47 ` Eliot Moss 2023-10-15 3:55 ` Brian Inglis 2023-10-14 22:52 ` Mark Geisert ` (2 subsequent siblings) 3 siblings, 1 reply; 9+ messages in thread From: Eliot Moss @ 2023-10-14 13:47 UTC (permalink / raw) To: Cedric Blancher, cygwin On 10/14/2023 7:39 AM, Cedric Blancher via Cygwin wrote: > On Fri, 11 Aug 2023 at 19:14, Brian Inglis <Brian.Inglis@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? I recall getting taskset going in util-linux a while back, but I don't recall working on priority related things. You could look into the cygwin source code to see how Windows priorities relate to the priority values in Cygwin. Then you may be able just to use /proc/[pid]/stat read out what you want. Best - EM ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-10-14 13:47 ` Eliot Moss @ 2023-10-15 3:55 ` Brian Inglis 2023-10-15 13:04 ` Christian Franke 0 siblings, 1 reply; 9+ messages in thread From: Brian Inglis @ 2023-10-15 3:55 UTC (permalink / raw) To: cygwin; +Cc: Cedric Blancher On 2023-10-14 07:47, Eliot Moss via Cygwin wrote: > On 10/14/2023 7:39 AM, Cedric Blancher via Cygwin wrote: >> On Fri, 11 Aug 2023 at 19:14, Brian Inglis 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? > I recall getting taskset going in util-linux a while back, but I don't > recall working on priority related things. You could look into the > cygwin source code to see how Windows priorities relate to the priority > values in Cygwin. Then you may be able just to use /proc/[pid]/stat > read out what you want. ISTR testing nice/renice, and found it was a simple priority mapping to/from Unix to Windows Idle to RealTime (at the time, process Affinity was not supported, so went with a PowerShell startup script instead); see: https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/sched.cc#l107 https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/sched.cc#l234 https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/sched.cc#l277 They are documented in proc(5) /proc/PID/stat fields 18 priority and 19 nice typically 20 and 0, as shown by `top` PR and NI, shown by `procps -l` as 80 and 0, and not shown by Cygwin `ps`. -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-10-15 3:55 ` Brian Inglis @ 2023-10-15 13:04 ` Christian Franke 0 siblings, 0 replies; 9+ messages in thread From: Christian Franke @ 2023-10-15 13:04 UTC (permalink / raw) To: cygwin Brian Inglis via Cygwin wrote: > On 2023-10-14 07:47, Eliot Moss via Cygwin wrote: >> On 10/14/2023 7:39 AM, Cedric Blancher via Cygwin wrote: >>> On Fri, 11 Aug 2023 at 19:14, Brian Inglis wrote: >>>> ... >>> >>>> ... >>>> $ 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. These are partly implemented, but sched_setscheduler() always fails with ENOSYS because scheduler policy (SCHED_*) cannot be changed on Windows. Changing priority only with sched_setparam() would work, but this is not used by chrt. >>>> 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? >> I recall getting taskset going in util-linux a while back, but I don't >> recall working on priority related things. You could look into the >> cygwin source code to see how Windows priorities relate to the priority >> values in Cygwin. Then you may be able just to use /proc/[pid]/stat >> read out what you want. > > ISTR testing nice/renice, and found it was a simple priority mapping > to/from Unix to Windows Idle to RealTime (at the time, process > Affinity was not supported, so went with a PowerShell startup script > instead); see: > > https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/sched.cc#l107 > > > https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/sched.cc#l234 > > > https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/sched.cc#l277 > The above maps priorities for sched_*() API. The mapping for nice() and get/setpriority() is done here: https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/miscfuncs.cc;h=767384f#l110 > They are documented in proc(5) /proc/PID/stat fields 18 priority and > 19 nice typically 20 and 0, as shown by `top` PR and NI, shown by > `procps -l` as 80 and 0, and not shown by Cygwin `ps`. On Cygwin, field 18 is always equal to (field_19 + 20). The priority value returned by sched_getparam() is different and could be shown with 'chrt -p PID'. The output from the command 'nice' without parameter may differ from /proc/PID/stat field 19 because the latter always reinterprets the current Windows prio class. This script prints a table of 'nice' outputs, /proc/PID/stat fields 19 and 18, result of sched_getparam() and corresponding Windows prio class for different 'nice -n ...' commands: #!/bin/bash echo "COMMAND : NICE STAT STPRI RTPRI WINPRI" for i in {-21..20}; do nice -n $i sh -e -c ' n=$(nice) s=$(cut -d" " -f19 /proc/$$/stat) p=$(cut -d" " -f18 /proc/$$/stat) r=$(LC_MESSAGES=C chrt -p $$ | sed -n "s,^.*priority: ,,p") case $r in 3) c="IDLE_PRIORITY_CLASS" ;; 9) c="BELOW_NORMAL_PRIORITY_CLASS" ;; 15) c="NORMAL_PRIORITY_CLASS" ;; 21) c="ABOVE_NORMAL_PRIORITY_CLASS" ;; 27) c="HIGH_PRIORITY_CLASS" ;; 32) c="REALTIME_PRIORITY_CLASS" ;; *) c="?" ;; esac printf "nice -n %3d:%5d %5d %5d %5d %s\\n" \ "'$i'" "$n" "$s" "$p" "$r" "$c" ' done -- Regards, Christian ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-10-14 11:39 ` Cedric Blancher 2023-10-14 13:47 ` Eliot Moss @ 2023-10-14 22:52 ` Mark Geisert 2023-10-30 6:09 ` Chris Wagner 2023-10-30 7:43 ` Backwoods BC 3 siblings, 0 replies; 9+ messages in thread From: Mark Geisert @ 2023-10-14 22:52 UTC (permalink / raw) To: cygwin Cedric Blancher via Cygwin wrote: > On Fri, 11 Aug 2023 at 19:14, Brian Inglis <Brian.Inglis@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. OFGS Why not try the command? If it doesn't seem to do anything then try the command with the '-h' or '--help' option. Or maybe try the canonical doc 'man nice'. You shouldn't always need our help with stuff like this. ..mark ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-10-14 11:39 ` Cedric Blancher 2023-10-14 13:47 ` Eliot Moss 2023-10-14 22:52 ` Mark Geisert @ 2023-10-30 6:09 ` Chris Wagner 2023-10-30 7:43 ` Backwoods BC 3 siblings, 0 replies; 9+ messages in thread From: Chris Wagner @ 2023-10-30 6:09 UTC (permalink / raw) To: Cedric Blancher; +Cc: cygwin On 2023-10-14 7:39 am, Cedric Blancher via Cygwin wrote: > > I know about nice and renice, but I don't see whether it is working or > not. > > Is there anything in /proc which can tell me the current *Windows* > scheduler priority level? Or a command line tool? > > Ced Iarn's TaskInfo will show you the real Windows priority (and let you change it and even suspend processes) along with a boatload of other highly useful stats. That will let you validate anything Cygwin claims it did. https://www.iarsn.com/taskinfo.html It's old but it still works and I run it continuously. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Run a Cygwin process with "higher" scheduler priority 2023-10-14 11:39 ` Cedric Blancher ` (2 preceding siblings ...) 2023-10-30 6:09 ` Chris Wagner @ 2023-10-30 7:43 ` Backwoods BC 3 siblings, 0 replies; 9+ messages in thread From: Backwoods BC @ 2023-10-30 7:43 UTC (permalink / raw) To: cygwin On Sat, Oct 14, 2023 at 4:41 AM Cedric Blancher via Cygwin <cygwin@cygwin.com> wrote: > Is there anything in /proc which can tell me the current *Windows* > scheduler priority level? Or a command line tool? 'pslist' from Sysinternals (owned by MS) will tell you the Windows priority. <https://learn.microsoft.com/en-ca/sysinternals/downloads/pslist> As for mapping Cygwin priorities to Windows, I ran a test using 'renice' to change the priority of a job and found the follosing non-linear mapping: Cygwin priority 1-3 is Windows priority 8 Cygwin priority 4-11 is Windows priority 6 Cygwin priority 12-19 is Windows priority 4 I only tested priorities 1 to 19. ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2023-10-30 7:43 UTC | newest] Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-08-11 15:44 Run a Cygwin process with "higher" scheduler priority Cedric Blancher 2023-08-11 17:14 ` Brian Inglis 2023-10-14 11:39 ` Cedric Blancher 2023-10-14 13:47 ` Eliot Moss 2023-10-15 3:55 ` Brian Inglis 2023-10-15 13:04 ` Christian Franke 2023-10-14 22:52 ` Mark Geisert 2023-10-30 6:09 ` Chris Wagner 2023-10-30 7:43 ` Backwoods BC
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