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Comparison · DevOps
ps vs RcppParallel
A side-by-side editorial comparison of ps and RcppParallel — release velocity, themes, recent moves, and the top alternatives to consider.
ps vs RcppParallel: at a glance
What is ps?
ps grew from a process inspector into the thing that reliably kills what you started.
ps is the cross-platform process API underneath processx and callr, and its recent work splits between widening what it can query and hardening the guarantee that a handle still refers to the process you think it does. Version 1.8.0 added interruptible multi-process waiting, vectorised signalling, and graceful kill with a TERM-then-KILL grace period. Version 1.9.3 rebuilt Linux process creation times on a clock pair instead of integer-second boot time, closing a window where two processes could look identical.
What is RcppParallel?
RcppParallel rebuilt its TBB foundation in 6.0.0, then spent a week fixing what that broke.
Four releases landed in eight days. 6.0.0 bundles oneTBB 2022.0.0, stops re-exporting TBB headers through `RcppParallel/TBB.h`, and changes the TBB ABI so dependent packages need rebuilding; on Windows it switched to Rtools' TBB, restricting the TBB backend to R 4.2.0 and later. 6.1.0 adds `isProcessForkedChild()` in both R and C++ so packages can detect a forked process and fall back to serial work, and enables TBB by default on musl distributions like Alpine. 6.1.1 and 6.2.0 are installation repairs — cmake discovery on macOS, a C++20 iterator-dispatch bug in bundled oneTBB, and a return to shared TBB libraries on Windows.
ps vs RcppParallel: editorial side-by-side
ps
0.0DEVOPS
ps grew from a process inspector into the thing that reliably kills what you started.
◆ Current state
ps is the cross-platform process API underneath processx and callr, and its recent work splits between widening what it can query and hardening the guarantee that a handle still refers to the process you think it does. Version 1.8.0 added interruptible multi-process waiting, vectorised signalling, and graceful kill with a TERM-then-KILL grace period. Version 1.9.3 rebuilt Linux process creation times on a clock pair instead of integer-second boot time, closing a window where two processes could look identical.
◆ Where it's heading
The direction is from observation to control. Early releases in view are per-process queries — CPU times, memory, affinity — and the newer ones are orchestration: wait on many processes with a timeout, signal a list of handles at once, terminate a tree politely before forcing it. The create-time precision work is what makes that safe, since a handle's identity is a PID plus a start time, and a one-second resolution start time is not enough to rule out PID reuse on a busy machine.
◆ Prediction
Expect the remaining platform-specific gaps in ps_status() and ps_apps() to close before any new capability area opens, since the recent additions have all been driven by processx issue reports.
RcppParallel
6.3DEVOPS
RcppParallel rebuilt its TBB foundation in 6.0.0, then spent a week fixing what that broke.
◆ Current state
Four releases landed in eight days. 6.0.0 bundles oneTBB 2022.0.0, stops re-exporting TBB headers through `RcppParallel/TBB.h`, and changes the TBB ABI so dependent packages need rebuilding; on Windows it switched to Rtools' TBB, restricting the TBB backend to R 4.2.0 and later. 6.1.0 adds `isProcessForkedChild()` in both R and C++ so packages can detect a forked process and fall back to serial work, and enables TBB by default on musl distributions like Alpine. 6.1.1 and 6.2.0 are installation repairs — cmake discovery on macOS, a C++20 iterator-dispatch bug in bundled oneTBB, and a return to shared TBB libraries on Windows.
◆ Where it's heading
The direction is toward RcppParallel owning its TBB, consistently, on every platform: 6.0.0 handed Windows to Rtools, and 6.2.0 reversed that to ship `tbb.dll` like everywhere else, explicitly so downstream packages have a library to link against and the ABI stops depending on the user's toolchain. Read together, the four releases are one migration and its aftermath. The fork-detection API is the other notable thread — it acknowledges that TBB and `mclapply()` do not mix.
◆ Prediction
Further installation and toolchain fixes are likely while the CRAN build farm exercises the new oneTBB on more configurations; the platform layout looks close to settled after 6.2.0.
Alternatives to ps and RcppParallel
Other DevOps products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either ps or RcppParallel.
Weaviate
Weaviate is tuning the agent, not the database — Search Mode now has effort tiers.
mlr3misc
The mlr3 utility belt has spent a year rebuilding how errors travel
Zed
Zed ships weekly, and the Git surface is finally catching up to the agent surface
odbc
odbc keeps turning into an authentication broker with a database driver attached.
rappdirs
Load-bearing across CRAN, and untouched since January 2021.
See all ps alternatives → · See all RcppParallel alternatives →
Recent activity from ps and RcppParallel
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 14d agoRcppParallelRcppParallel 6.2.0
- 17d agoRcppParallelRcppParallel 6.1.1 fixes cmake discovery on macOS
- 17d agoRcppParallelRcppParallel 6.1.0 adds fork detection, enables TBB on musl
- 21d agoRcppParallelRcppParallel 6.0.0 bundles oneTBB 2022 and breaks the ABI ⚡
- 3mo agopsSub-second process create times on Linux
- 4mo agopsps_string() for unique process identification
- 1y agopsBuild correctly on Alpine Linux
- 1y agopsmaxrss reporting and selectable columns in ps()
- 1y agopsInstallable again on unsupported platforms
- 1y agopsMulti-process waiting, vectorised signals and graceful kill ⚡
Frequently asked questions
What is the difference between ps and RcppParallel?
They serve adjacent needs but don't currently overlap on shipped themes. RcppParallel is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is ps better than RcppParallel?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. RcppParallel is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other DevOps products to evaluate alongside.
What are the best alternatives to ps?
Top ps alternatives in DevOps are ranked by recent ship velocity. Browse the "ps alternatives" section above for the current picks, or visit /alternatives/ps-r for the full list with editorial commentary on each.
What are the best alternatives to RcppParallel?
Top RcppParallel alternatives in DevOps are ranked by recent ship velocity. Browse the "RcppParallel alternatives" section above for the current picks, or visit /alternatives/rcppparallel for the full list with editorial commentary on each.