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// zig run -O ReleaseFast --zig-lib-dir ../.. benchmark.zig
const std = @import("std");
const builtin = @import("builtin");
const time = std.time;
const Timer = time.Timer;
const Random = std.Random;
const KiB = 1024;
const MiB = 1024 * KiB;
const GiB = 1024 * MiB;
const Rng = struct {
ty: type,
name: []const u8,
init_u8s: ?[]const u8 = null,
init_u64: ?u64 = null,
};
const prngs = [_]Rng{
Rng{
.ty = Random.Isaac64,
.name = "isaac64",
.init_u64 = 0,
},
Rng{
.ty = Random.Pcg,
.name = "pcg",
.init_u64 = 0,
},
Rng{
.ty = Random.RomuTrio,
.name = "romutrio",
.init_u64 = 0,
},
Rng{
.ty = Random.Sfc64,
.name = "sfc64",
.init_u64 = 0,
},
Rng{
.ty = Random.Xoroshiro128,
.name = "xoroshiro128",
.init_u64 = 0,
},
Rng{
.ty = Random.Xoshiro256,
.name = "xoshiro256",
.init_u64 = 0,
},
};
const csprngs = [_]Rng{
Rng{
.ty = Random.Ascon,
.name = "ascon",
.init_u8s = &[_]u8{0} ** 32,
},
Rng{
.ty = Random.ChaCha,
.name = "chacha",
.init_u8s = &[_]u8{0} ** 32,
},
};
const Result = struct {
throughput: u64,
};
const long_block_size: usize = 8 * 8192;
const short_block_size: usize = 8;
pub fn benchmark(comptime H: anytype, bytes: usize, comptime block_size: usize) !Result {
var rng = blk: {
if (H.init_u8s) |init| {
break :blk H.ty.init(init[0..].*);
}
if (H.init_u64) |init| {
break :blk H.ty.init(init);
}
break :blk H.ty.init();
};
var block: [block_size]u8 = undefined;
var offset: usize = 0;
var timer = try Timer.start();
const start = timer.lap();
while (offset < bytes) : (offset += block.len) {
rng.fill(block[0..]);
}
const end = timer.read();
const elapsed_s = @as(f64, @floatFromInt(end - start)) / time.ns_per_s;
const throughput = @as(u64, @intFromFloat(@as(f64, @floatFromInt(bytes)) / elapsed_s));
std.debug.assert(rng.random().int(u64) != 0);
return Result{
.throughput = throughput,
};
}
fn usage() void {
std.debug.print(
\\throughput_test [options]
\\
\\Options:
\\ --filter [test-name]
\\ --count [int]
\\ --prngs-only
\\ --csprngs-only
\\ --short-only
\\ --long-only
\\ --help
\\
, .{});
}
fn mode(comptime x: comptime_int) comptime_int {
return if (builtin.mode == .Debug) x / 64 else x;
}
pub fn main() !void {
const stdout = std.io.getStdOut().writer();
var buffer: [1024]u8 = undefined;
var fixed = std.heap.FixedBufferAllocator.init(buffer[0..]);
const args = try std.process.argsAlloc(fixed.allocator());
var filter: ?[]u8 = "";
var count: usize = mode(128 * MiB);
var bench_prngs = true;
var bench_csprngs = true;
var bench_long = true;
var bench_short = true;
var i: usize = 1;
while (i < args.len) : (i += 1) {
if (std.mem.eql(u8, args[i], "--mode")) {
try stdout.print("{}\n", .{builtin.mode});
return;
} else if (std.mem.eql(u8, args[i], "--filter")) {
i += 1;
if (i == args.len) {
usage();
std.os.exit(1);
}
filter = args[i];
} else if (std.mem.eql(u8, args[i], "--count")) {
i += 1;
if (i == args.len) {
usage();
std.os.exit(1);
}
const c = try std.fmt.parseUnsigned(usize, args[i], 10);
count = c * MiB;
} else if (std.mem.eql(u8, args[i], "--csprngs-only")) {
bench_prngs = false;
} else if (std.mem.eql(u8, args[i], "--prngs-only")) {
bench_csprngs = false;
} else if (std.mem.eql(u8, args[i], "--short-only")) {
bench_long = false;
} else if (std.mem.eql(u8, args[i], "--long-only")) {
bench_short = false;
} else if (std.mem.eql(u8, args[i], "--help")) {
usage();
return;
} else {
usage();
std.os.exit(1);
}
}
if (bench_prngs) {
if (bench_long) {
inline for (prngs) |R| {
if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
try stdout.print("{s} (long outputs)\n", .{R.name});
const result_long = try benchmark(R, count, long_block_size);
try stdout.print(" {:5} MiB/s\n", .{result_long.throughput / (1 * MiB)});
}
}
}
if (bench_short) {
inline for (prngs) |R| {
if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
try stdout.print("{s} (short outputs)\n", .{R.name});
const result_short = try benchmark(R, count, short_block_size);
try stdout.print(" {:5} MiB/s\n", .{result_short.throughput / (1 * MiB)});
}
}
}
}
if (bench_csprngs) {
if (bench_long) {
inline for (csprngs) |R| {
if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
try stdout.print("{s} (cryptographic, long outputs)\n", .{R.name});
const result_long = try benchmark(R, count, long_block_size);
try stdout.print(" {:5} MiB/s\n", .{result_long.throughput / (1 * MiB)});
}
}
}
if (bench_short) {
inline for (csprngs) |R| {
if (filter == null or std.mem.indexOf(u8, R.name, filter.?) != null) {
try stdout.print("{s} (cryptographic, short outputs)\n", .{R.name});
const result_short = try benchmark(R, count, short_block_size);
try stdout.print(" {:5} MiB/s\n", .{result_short.throughput / (1 * MiB)});
}
}
}
}
}
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