tjh.dev
1{ lib, stdenv, fetchFromGitHub, autoreconfHook }:
2
3stdenv.mkDerivation rec {
4 pname = "multitime";
5 version = "1.4";
6
7 src = fetchFromGitHub {
8 owner = "ltratt";
9 repo = pname;
10 rev = "${pname}-${version}";
11 sha256 = "1p6m4gyy6dw7nxnpsk32qiijagmiq9vwch0fbc25qvmybwqp8qc0";
12 };
13
14 nativeBuildInputs = [ autoreconfHook ];
15
16 meta = {
17 description = "Time command execution over multiple executions";
18
19 longDescription = ''
20 Unix's `time` utility is a simple and often effective way of measuring
21 how long a command takes to run. Unfortunately, running a command once
22 can give misleading timings: the process may create a cache on its first
23 execution, running faster subsequently; other processes may cause the
24 command to be starved of CPU or IO time; etc. It is common to see people
25 run `time` several times and take whichever values they feel most
26 comfortable with. Inevitably, this causes problems.
27
28 `multitime` is, in essence, a simple extension to time which runs a
29 command multiple times and prints the timing means (with confidence
30 intervals), standard deviations, minimums, medians, and maximums having
31 done so. This can give a much better understanding of the command's
32 performance.
33 '';
34
35 license = lib.licenses.mit;
36 homepage = "https://tratt.net/laurie/src/multitime/";
37 platforms = lib.platforms.unix;
38 };
39}