---
name: "sched_getparam"
section: "3p"
platform: "linux"
package: "man-pages"
version: "6.19-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/sched_getparam/3p"
---

# sched\_getparam(3p)

get scheduling parameters (REALTIME)

## PROLOG

This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

## NAME

sched\_getparam — get scheduling parameters (**REALTIME**)

## SYNOPSIS

```
#include <sched.h>
```

int sched\_getparam(pid\_t *pid*, struct sched\_param \**param*);

## DESCRIPTION

The *sched\_getparam*() function shall return the scheduling parameters of a process specified by *pid* in the **sched\_param** structure pointed to by *param*.

If a process specified by *pid* exists, and if the calling process has permission, the scheduling parameters for the process whose process ID is equal to *pid* shall be returned.

If *pid* is zero, the scheduling parameters for the calling process shall be returned. The behavior of the *sched\_getparam*() function is unspecified if the value of *pid* is negative.

## RETURN VALUE

Upon successful completion, the *sched\_getparam*() function shall return zero. If the call to *sched\_getparam*() is unsuccessful, the function shall return a value of -1 and set *errno* to indicate the error.

## ERRORS

The *sched\_getparam*() function shall fail if:

- **EPERM**

  The requesting process does not have permission to obtain the scheduling parameters of the specified process.

- **ESRCH**

  No process can be found corresponding to that specified by *pid*.

*The following sections are informative.*

## EXAMPLES

None.

## APPLICATION USAGE

None.

## RATIONALE

None.

## FUTURE DIRECTIONS

None.

## SEE ALSO

*sched\_getscheduler()*, *sched\_setparam()*, *sched\_setscheduler()*

The Base Definitions volume of POSIX.1‐2017, ***\<sched.h\>***

## COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting\_bugs.html .