40 lines
1.4 KiB
Nix
40 lines
1.4 KiB
Nix
{ lib, stdenv, fetchFromGitHub, autoreconfHook }:
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stdenv.mkDerivation rec {
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pname = "multitime";
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version = "1.4";
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src = fetchFromGitHub {
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owner = "ltratt";
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repo = pname;
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rev = "${pname}-${version}";
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sha256 = "1p6m4gyy6dw7nxnpsk32qiijagmiq9vwch0fbc25qvmybwqp8qc0";
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};
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nativeBuildInputs = [ autoreconfHook ];
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meta = {
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description = "Time command execution over multiple executions";
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longDescription = ''
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Unix's `time` utility is a simple and often effective way of measuring
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how long a command takes to run. Unfortunately, running a command once
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can give misleading timings: the process may create a cache on its first
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execution, running faster subsequently; other processes may cause the
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command to be starved of CPU or IO time; etc. It is common to see people
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run `time` several times and take whichever values they feel most
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comfortable with. Inevitably, this causes problems.
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`multitime` is, in essence, a simple extension to time which runs a
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command multiple times and prints the timing means (with confidence
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intervals), standard deviations, minimums, medians, and maximums having
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done so. This can give a much better understanding of the command's
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performance.
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'';
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license = lib.licenses.mit;
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homepage = "https://tratt.net/laurie/src/multitime/";
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platforms = lib.platforms.unix;
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};
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}
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