Web lists-archives.com

Re: taskset in util-linux?




On 4/7/2019 10:15 PM, Yaakov Selkowitz wrote:
On Fri, 2019-04-05 at 20:37 -0400, Eliot Moss wrote:
I am wondering about the absence of tasket from Cygwin's
util-linux package.  While I can imagine that the Linux
version of that program might no port directly, Windows
does seem to support similar functionality -- cmd.exe
accepts a /affinity switch.  It is ugly, perhaps comparatively
slow, etc., to have to run a Cygwin task with affinity
going through cmd (and I found no way to make that work
without popping up a cmd window, that then goes away when
the task completes).

Any possibility of getting this supported under Cygwin?
I have no idea what underlying calls, etc., might need
support ...

Cygwin does not have the requisite sched_[gs]etaffinity functions; PTC.

Yes, I knew that, so I probably should have mentioned it.  I can
rephrase: Any chance of getting those functions added, and *then*
having taskset as part of Cygwin's util-linux?

I've not tinkered with Cygwin internals much, so I'm not sure I
could develop a worthy patch.

Likewise, it would be nice to be able to control the
performance settings (clock speed) via the /sys method
supported under (some) Linux versions:

/sys/devices/system/cpu/intel_pstate/{no_turbo,{min,max}_perf_pct}

One might link these to something (probably new) in /proc.

Cygwin does not support /sys at all.

Yes, again, I could see that.  I'm asking more about the functionality
as opposed to where exactly it is found.  Again, I can use CMD commands
to accomplish it, but it is somewhat ugly.  Reading / writing some new
/proc entries would be fine :-) ...  If necessary I could build /sys
links to the /proc entries to make it more transparent.

Regards - Eliot

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple