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ps

1.9.3

List, Query, Manipulate System Processes

19packages dependsuggested by 18
14.8Mdownloads / year
61.6%test coverage
13/13flavors OK

Overview

About

List, query and manipulate all system processes, on 'Windows', 'Linux' and 'macOS'.

Changes in 1.9.3
  • On Linux, process create times are now computed using CLOCK_REALTIME - CLOCK_MONOTONIC instead of /proc/stat btime, giving sub-second precision (previously, integer-second boot time caused up to 1s error). Handle validation accepts both the precise and the legacy boot time, so handles created by older versions of processx continue to work. For https://github.com/r-lib/processx/issues/394 and https://github.com/r-lib/processx/issues/402.

From NEWS.md in the release

Install

Health

CRAN checks
13OK
Slowest check: 3.1 min · r-devel-windows-x86_64
Status changes
  • OK13 OK2026-08-05
  • NOTE12 OK, 1 NOTE2026-08-01
  • OK14 OK2026-04-04
  • WARNING8 OK, 6 WARNING2026-03-30
  • ERROR8 OK, 5 WARNING, 1 ERROR2026-03-29
Show 3 earlier changesHide 3 earlier changes
  • WARNING9 OK, 4 NOTE, 1 WARNING2026-03-21
  • NOTE13 OK, 1 NOTE2026-03-17
  • OK14 OK2026-03-10
Advisories

none known

Documentation

In release 1.9.3
READMEYes · 2,199 wordsVignettesNoNEWSYes · 100% structured · mentions 1.9.3Citation fileNoWebsiteYes · pkgdown
Help pages
57 (1 internal)includes a package overview page
Examples that run
100%47 run in a plain check (45 of them under a condition)
Exported functions with examples
84%
Documented parameters
100%
Return-value docs
88%
Help pages citing references
0%

Downloads

14.8M
CRAN downloads in the past year
Rank #43 · ~40.6K/day · ~1.2M/mo
Daily download trend is not available in this view yet.
1.1M30 days
3.5M90 days
14.8M1 year
Compare downloads with other packages →
Also on215.7K r2u202 autocran1.4M conda_forge22.8K c2d4u

Repository

r-lib/ps ↗Organization: r-lib
83Stars
23Forks
6Open issues
0Open PRs
25Releases
860Commits
18Commit identities
860 commits · Last activity 2026-09-29 · 0% stars, 30d · Default branch at 1.9.3.9000, ahead of CRAN 1.9.3 (checked 2026-10-11)
Responsiveness
How these are sampled
PRs merged (all time)
90%
Median days to close, 50 most recently updated closed issues
17
Median days to close, 50 most recently updated closed PRs
0

Stars over time

2025-06-11 · 812026-07-07 · 83
PracticesBeta

15 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/r-lib/ps on 2026-10-11.

Continuous integration (2)
GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Governance and community (4)
Code of conductContributing guideIssue templatesSupport guide
Docs source (4)
README.Rmdpkgdown

GitHub Pages site last deployed 2026-09-29 · The repository has a site deploy workflow

pkgdown site last built 2026-04-20

Coverage (1)
Coverage reporting (Codecov)
Show all practicesHide 2 practices
CRAN release process (1)
cran-comments.md
Lint, format, editor (3)
AirVS CodeRStudio project
How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies
11 external dependencies (excludes base and recommended)

Installing ps adds no packages beyond those that come with R.

Depends (1)
R >= 3.4
Imports (1)
utils
LinkingTo (0)
none
Enhances (0)
none

People & History

People (5)
Author, Maintainer since 1.0.0 (2018)
Author
Copyright holder, Funder · added in 1.7.6
Listed in earlier versions (1)
RStudio
no longer listed · 1.0.0 to 1.7.5
Releases (26)

Pick two releases to compare their code metrics.

Show 19 earlier eventsHide 19 earlier events
  • 1.7.1
    record
    2022-06-18 · diff ↗
  • 1.7.0
    record
    2022-04-23 · diff ↗ ·
    added 3 exports
    ps_get_cpu_affinity, ps_memory_full_info, ps_set_cpu_affinity
  • R
    R 4.2.0 released · 2022-04-22
  • R
    R 4.1.0 released · 2021-05-18
  • 1.6.0
    record
    2021-02-28 · diff ↗ ·
    added 2 exports
    ps_loadavg, ps_system_cpu_times
  • 1.5.0
    record
    2020-12-05 · diff ↗ ·
    added 3 exports
    ps_descent, ps_shared_lib_users, ps_shared_libs
  • 1.4.0
    record
    2020-10-07 · diff ↗ ·
    added 8 exports
    ps_disk_partitions, ps_disk_usage, ps_get_nice, ps_set_nice, ps_system_memory, ps_system_swap, ps_tty_size, ps_windows_nice_values
  • 1.3.4
    record
    2020-08-11 · diff ↗
  • 1.3.3
    record
    2020-05-08 · diff ↗ ·
    added 1 export
    errno
  • R
    R 4.0.0 released · 2020-04-24
  • 1.3.2
    record
    2020-02-13 · diff ↗
  • 1.3.1
    record
    2020-02-12 · diff ↗
  • R
    R 3.6.0 released · 2019-04-26
  • 1.3.0
    record
    2018-12-21 · diff ↗ ·
    added 1 export
    ps_cpu_count
  • 1.2.1
    record
    2018-11-06 · diff ↗
  • 1.2.0
    record
    2018-10-16 · diff ↗ ·
    added 1 export
    ps_connections
  • 1.1.0
    record
    2018-08-10 · diff ↗ ·
    added 9 exports
    CleanupReporter, ps_find_tree, ps_interrupt, ps_kill_tree, ps_mark_tree, ps_num_fds, ps_open_files, ps_users, with_process_cleanup
  • 1.0.0
    record
    2018-07-22
  • R
    R 3.5.0 released · 2018-04-23

Package metadata

First published
2018-07-22
Total releases
26 / 8 yrs
License
MIT + file LICENSE OSI · relicensed from BSD_3_clause + file LICENSE in 1.4.0
Minimum R
≥ 3.4
Download size
168 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("ps")
Csárdi, G., Posit Software, PBC, Daeschler, D., Loden, J., & Rodola', G. (2026). ps: List, Query, Manipulate System Processes (Version 1.9.3) [Computer software]. https://doi.org/10.32614/CRAN.package.ps

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

APA

Balamuta, J. J. (2026). R Observatory: Metrics for ps version 1.9.3 [Data set]. HJJB, LLC. Data release v2026-10-17. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-17, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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