# How to time julia's choleskey factorization?

**URL:** https://discourse.julialang.org/t/how-to-time-julias-choleskey-factorization/47627
**Category:** Performance
**Tags:** linearalgebra
**Created:** [October 2, 2020, 5:06am UTC](https://discourse.julialang.org/t/how-to-time-julias-choleskey-factorization/47627 "2020-10-02T05:06:20Z")
**Posts on this page:** 1
**Showing post:** 8

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### Author: ![rdeits](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rdeits/32/286_2.png) [@rdeits](https://discourse.julialang.org/u/rdeits)
#### Post date: [October 2, 2020, 2:37pm UTC](https://discourse.julialang.org/t/how-to-time-julias-choleskey-factorization/47627/8 "2020-10-02T14:37:07Z")

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BTW, note that you need to set `evals=1` otherwise your mutating `potrf!` will be called multiple times per setup, which could skew your results. See [How to benchmark append!? - #7 by rdeits](https://discourse.julialang.org/t/how-to-benchmark-append/47272/7) and the other conversations linked from there.

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