On Dec 23 14:55:30,c...@schulte.it wrote:
things. I am searching for some kind of system API allowing an
application to reserve a certain amount of CPUs exclusively - not shared
with any other application - maybe not even the OS.
Let's back off before blaming the OS
or declaring CPU affinity to
On Fri, 27 Dec 2024, at 05:12, Anon Loli wrote:
> This is all, granted, me not understanding how CPU and other resource's
> scheduling works in general, and/or in OpenBSD, but this to me seems to be the
> most sane thing.
> Is manual resource dividing even possible in OS-s, and another question - i
On Mon, Dec 23, 2024 at 05:03:10PM +0100, Jan Stary wrote:
> On Dec 23 14:55:30, c...@schulte.it wrote:
> > things. I am searching for some kind of system API allowing an
> > application to reserve a certain amount of CPUs exclusively - not shared
> > with any other application - maybe not even the
On 12/23/24 22:23, Geoff Steckel wrote:
> On 12/23/24 1:43 PM, Christian Schulte wrote:
>> Not criticizing OpenBSD in any way. Let me try to explain a common use
>> case. There is a data source capable of providing X bytes per second at
>> max. The application needs to be setup in a way it can rece
On 12/23/24 1:43 PM, Christian Schulte wrote:
Not criticizing OpenBSD in any way. Let me try to explain a common use
case. There is a data source capable of providing X bytes per second at
max. The application needs to be setup in a way it can receive those X
bytes per second without spin locking
On 12/23/24 19:43, Christian Schulte wrote:
> On 12/23/24 17:37, Geoff Steckel wrote:
>> On 12/23/24 11:20 AM, Gábor LENCSE wrote:
>>> Under Linux, one can use the isolcpus kernel command line
>>> parameter to exclude certain cores from the scheduler.
>>> I use the DPDK rte_eal_remote_launch() func
If you need a "guarantee" to be able to process X bytes/second I think you need
a real-time OS not a general purpose one.
On 12/23/24 17:37, Geoff Steckel wrote:
> On 12/23/24 11:20 AM, Gábor LENCSE wrote:
>> Under Linux, one can use the isolcpus kernel command line
>> parameter to exclude certain cores from the scheduler.
>> I use the DPDK rte_eal_remote_launch() function to start a thread on
>> an isolated CPU core.
Hi Geoff,
23/12/2024 17:37 keltezéssel, Geoff Steckel írta:
On 12/23/24 11:20 AM, Gábor LENCSE wrote:
Under Linux, one can use the isolcpus kernel command line
parameter to exclude certain cores from the scheduler.
I use the DPDK rte_eal_remote_launch() function to start a thread on
an isolate
On 12/23/24 17:03, Jan Stary wrote:
> On Dec 23 14:55:30, c...@schulte.it wrote:
>> things. I am searching for some kind of system API allowing an
>> application to reserve a certain amount of CPUs exclusively - not shared
>> with any other application - maybe not even the OS.
>
> If that existed,
On 12/23/24 11:20 AM, Gábor LENCSE wrote:
Under Linux, one can use the isolcpus kernel command line
parameter to exclude certain cores from the scheduler.
I use the DPDK rte_eal_remote_launch() function to start a thread on
an isolated CPU core.
Is there anything similar under OpenBSD?
Is th
23/12/2024 17:03 keltezéssel, Jan Stary írta:
On Dec 23 14:55:30, c...@schulte.it wrote:
things. I am searching for some kind of system API allowing an
application to reserve a certain amount of CPUs exclusively - not shared
with any other application - maybe not even the OS.
If that existed
On Dec 23 14:55:30, c...@schulte.it wrote:
> things. I am searching for some kind of system API allowing an
> application to reserve a certain amount of CPUs exclusively - not shared
> with any other application - maybe not even the OS.
If that existed, every application would start with
"reserve
On 2024-12-23, Christian Schulte wrote:
> Is there some standard API (e.g. POSIX) allowing an
> application to reserve a certain amount of processors to a specific
> application?
Nothing standard afaik. There are non-standard APIs to set cpu affinity
etc on some OS, but not on OpenBSD.
Hello everybody,
as a long time (decades) Java developer now converting to bare metal C,
I would like to ask about how to do parallelization properly. The poor
man's approach the Java APIs implement pretty much resemble what every
one else is doing. Take the number of processors available in a sys
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