Ollama: Ollama: improve existing draft article

2026-10-24T15:54:49Z

Ollama: improve existing draft article

← Older revision		Revision as of 15:54, 24 October 2026
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			[[Chrt]] is a command-line utility in Linux used to set or retrieve the scheduling policy and priority of a process. It is particularly useful for managing real-time processes, allowing users to adjust how the kernel schedules tasks based on specific needs. This article provides an overview of [[Chrt]]'s functionality, usage, and related considerations.
⚫	https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification

			{{H2\|Overview}}
⚫	https://access.redhat.com/solutions/3742421
			The [[Chrt]] command interacts with the Linux kernel's scheduler, which determines the order in which processes are executed. By default, processes operate under the standard scheduling policy, but [[Chrt]] allows users to change this to policies such as real-time (e.g., `SCHED_FIFO` or `SCHED_RR`) or deadline-based scheduling. Real-time policies are critical for applications requiring predictable timing, such as multimedia playback or industrial control systems.

			{{H2\|Usage}}
	https://archive.is/wip/lw5ia
			The basic syntax for [[Chrt]] is:
			```bash
			[[Chrt]] [OPTIONS] [PID \| COMMAND]
			```
			Key options include:
			- `-p`: Modify the scheduling policy of an existing process (requires the process ID).
			- `-r`: Set the scheduling policy to `SCHED_RR` (round-robin).
			- `-f`: Set the scheduling policy to `SCHED_FIFO` (first-in, first-out).
			- `-d`: Set the scheduling policy to `SCHED_DEADLINE` (deadline-based scheduling).
			- `--priority`: Specify the priority level (ranging from 1 to 99 for real-time policies).

			For example, to run a program with `SCHED_FIFO` and priority 80:
			```bash
			[[Chrt]] -f --priority 80 ./my_program
			```

			{{H2\|Examples}}
			1. Changing a running process's policy:
			To adjust the scheduling policy of an existing process (e.g., PID 1234):
			```bash
			[[Chrt]] -p -f --priority 70 1234
			```

			2. Deadline-based scheduling:
			For applications requiring strict timing guarantees:
			```bash
			[[Chrt]] -d --deadline 1000000 --period 2000000 --runtime 500000 ./deadline_app
			```
			(Values are in nanoseconds; this example sets a deadline of 1 second, a period of 2 seconds, and a runtime of 500 milliseconds.)

			{{H2\|Notes}}
			- Privileges: Modifying scheduling policies often requires root privileges, as real-time scheduling can impact system stability.
			- Compatibility: The `SCHED_DEADLINE` policy is available in kernels version 3.16 and later.
			- Limitations: Overuse of real-time priorities can lead to system unresponsiveness if not managed carefully.

			{{H2\|References}}
		⚫	- System-wide scheduling modification: [[https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification\|Unix Stack Exchange]]
		⚫	- Red Hat documentation on scheduling: [[https://access.redhat.com/solutions/3742421\|Red Hat]]
			- Historical context and examples: [[https://archive.is/wip/lw5ia\|archive.is]]

	{{Draft}}
	{{Linux}}		{{Linux}}

			{{Ollama}}
			{{Pending Human Review}}

Robert Brockway at 13:49, 27 June 2024

2024-06-27T13:49:52Z

← Older revision		Revision as of 13:49, 27 June 2024
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	https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification		https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification

			https://access.redhat.com/solutions/3742421

			https://archive.is/wip/lw5ia

	{{Draft}}		{{Draft}}

Robert Brockway: Created page with "https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification {{Draft}} {{Linux}}"

2024-06-27T09:07:02Z

Created page with "https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification {{Draft}} {{Linux}}"

New page

https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification

{{Draft}}
{{Linux}}

Chrt - Revision history

Ollama: Ollama: improve existing draft article

Robert Brockway at 13:49, 27 June 2024

Robert Brockway: Created page with "https://unix.stackexchange.com/questions/698588/system-wide-scheduling-modification {{Draft}} {{Linux}}"