update* performance

Hashmaps
Lists
Sequences
Vectors

Aside from lists, update* version 5 is about 50% faster than version 4.

See the overall summary for benchmarking details. The benchmarks displayed in this document are defined here.

Hashmaps

update* version 5 performance improved to within 8% that of clojure.core/update.

(fn [n] (update (map-of-n-key-vals n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update (map-of-n-key-vals n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000 10000 100000 1000000
4 1.2e-07±1.6e-09 2.1e-07±1.0e-09 2.2e-07±1.4e-09 2.6e-07±1.0e-09 2.8e-07±5.3e-09 3.1e-07±2.3e-09 3.4e-07±2.7e-09
5 1.4e-07±1.8e-09 2.2e-07±8.5e-10 2.2e-07±2.4e-09 2.9e-07±1.6e-09 3.1e-07±4.1e-09 3.4e-07±2.7e-09 3.8e-07±8.0e-09

(fn [n] (update* (map-of-n-key-vals n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update* (map-of-n-key-vals n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000 10000 100000 1000000
4 2.4e-07±4.9e-09 4.5e-07±7.1e-09 4.5e-07±8.9e-09 5.1e-07±8.9e-09 5.3e-07±4.2e-09 5.5e-07±1.6e-08 5.9e-07±1.0e-08
5 1.6e-07±7.0e-10 2.4e-07±5.3e-10 2.5e-07±1.1e-09 3.2e-07±4.5e-10 3.3e-07±2.2e-09 3.7e-07±1.7e-09 4.0e-07±1.1e-09

Lists

Performance on lists did not perceptibly change between versions.

(fn [n] (update* (list-of-n-rand-ints n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update* (list-of-n-rand-ints n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000
4 1.1e-06±1.1e-08 2.1e-05±3.1e-07 1.7e-03±3.0e-05 1.6e-01±3.3e-03
5 9.4e-07±1.3e-08 2.0e-05±9.9e-08 1.6e-03±9.7e-06 1.6e-01±1.3e-03

Sequences

update* version 5 performance handling sequences improved by a factor of two.

(fn [n] (update (seq-of-n-rand-ints n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update (seq-of-n-rand-ints n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000 10000 100000 1000000
4 1.1e-07±5.2e-10 1.2e-07±2.1e-09 1.3e-07±1.8e-09 1.4e-07±5.5e-10 1.4e-07±2.6e-09 1.5e-07±2.0e-09 1.6e-07±2.5e-09
5 1.2e-07±3.3e-10 1.3e-07±3.7e-10 1.4e-07±5.2e-10 1.4e-07±3.1e-10 1.6e-07±1.2e-09 1.7e-07±1.1e-09 1.8e-07±1.0e-09

(fn [n] (update* (seq-of-n-rand-ints n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update* (seq-of-n-rand-ints n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000 10000 100000 1000000
4 4.2e-07±3.9e-09 4.0e-07±2.1e-09 4.3e-07±5.8e-09 4.4e-07±8.5e-09 4.4e-07±6.6e-09 4.6e-07±2.7e-09 4.7e-07±2.1e-09
5 1.9e-07±1.9e-09 2.0e-07±1.6e-09 2.1e-07±1.4e-09 2.3e-07±2.0e-09 2.4e-07±3.4e-09 2.4e-07±1.3e-09 2.5e-07±2.3e-10

Vectors

Version 5 performance improved by about 50%.

(fn [n] (update (vec-of-n-rand-ints n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update (vec-of-n-rand-ints n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000 10000 100000 1000000
4 1.1e-07±1.8e-09 1.2e-07±1.1e-09 1.3e-07±1.9e-09 1.4e-07±2.9e-09 1.4e-07±8.9e-10 1.5e-07±2.2e-09 1.6e-07±4.4e-09
5 1.2e-07±3.0e-09 1.3e-07±1.1e-09 1.3e-07±7.6e-10 1.4e-07±1.8e-09 1.5e-07±4.9e-10 1.6e-07±8.2e-10 1.7e-07±9.9e-10

(fn [n] (update* (vec-of-n-rand-ints n) (dec n) inc))

Benchmark measurements for expression `(fn [n] (update* (vec-of-n-rand-ints n) (dec n) inc))`, time versus 'n' arguments, comparing different versions.
times in seconds, mean±std
arg, n
version 1 10 100 1000 10000 100000 1000000
4 3.6e-07±1.4e-09 3.6e-07±1.2e-09 3.6e-07±2.8e-09 3.7e-07±1.5e-09 3.9e-07±5.4e-09 4.0e-07±6.4e-09 4.1e-07±9.8e-09
5 1.6e-07±9.0e-10 1.7e-07±2.1e-09 1.8e-07±9.2e-10 1.9e-07±1.8e-09 2.1e-07±4.9e-09 2.1e-07±3.5e-09 2.2e-07±2.4e-09

Copyright © 2024–2025 Brad Losavio.
Compiled by Fastester on 2025 October 01.
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