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gzipbench: all tools on Apple M5 (10 cpus), zlib-ng develop 1239e888
Raw
gzipbench-all-tools-apple-m5.md

gzipbench: all tools on Apple M5

Whole-process gzip benchmarks from gzipbench, stdin to stdout, so startup, threading, and IO all count.

Machine: Apple M5, 10 cpus, macOS 26.6.2 arm64, 2026-09-04. Input: synthetic mixed 256 MiB (source-like text, build logs, random blocks, ~4.8:1 at gzip -6). Library: gzip-ng, minigzip, pigz, pigzpp, and bgzip built against zlib-ng develop 1239e888 (2.3.90). GNU gzip and MiGz do not link zlib. pigzpp runs with -E zlib.

Compress, level 6, 10 threads

Variant Speed Ratio
bgzip -@ 815 MB/s 4.12
gzip-ng -p 790 MB/s 4.40
pigz -p 752 MB/s 4.61
pigzpp -p 731 MB/s 4.61
migz 389 MB/s 4.50
gzip-ng / minigzip (serial) 134 MB/s 4.55
gzip (serial) 72 MB/s 4.52

Decompress, own output

Variant Speed
gzip-ng -p 10 6.73 GB/s
bgzip -@ 10 5.29 GB/s
migz 2.88 GB/s
gzip-ng 1.28 GB/s
minigzip 1.25 GB/s
pigzpp -p 10 892 MB/s
pigz -p 10 816 MB/s
gzip 333 MB/s

gzip-ng also decodes the foreign block-framed streams fastest: 6.19 GB/s on MiGz output and 6.48 GB/s on bgzip output at -p 10.

Notes

  • zlib-ng's level 9 compresses about 2.5% worse than its own level 8 on this input, so every zlib-ng tool shows a backturn at L9 in the scatter. Stock zlib and GNU gzip stay monotonic. Reproduces bit-for-bit on 2.2.4 stable.
  • The deflate block census (32 MiB sample, level 6): rsyncable modes cut blocks to 2-3 kB of input (pigz 10,625 blocks, gzip-ng 16,573) versus 40-95 kB normally; bgzip frames 517 members, MiGz 64.
  • Full per-level ladders (1-9), thread sweeps, cross-decode grid, and the census are in the attached table, JSON, and SVG.
Raw
gzipbench-all-tools-table.txt
benchmark time speed ratio
--------------------------------------------------------------------------
compress/gzipng/level:1 0.81s 330 MB/s 2.970
compress/gzip/level:1 2.14s 126 MB/s 3.455
compress/minigzip/level:1 0.81s 330 MB/s 2.970
compress/gzipng-p/level:1/threads:10 0.19s 1.39 GB/s 2.909
compress/pigz-p/level:1/threads:10 0.15s 1.77 GB/s 2.979
compress/pigzpp-p/level:1/threads:10 0.15s 1.75 GB/s 2.979
compress/bgzip-p/level:1/threads:10 0.14s 1.87 GB/s 2.810
compress/migz/level:1 0.45s 599 MB/s 3.505
compress/gzipng/level:2 1.23s 218 MB/s 3.794
compress/gzip/level:2 2.02s 133 MB/s 3.903
compress/minigzip/level:2 1.23s 218 MB/s 3.794
compress/gzipng-p/level:2/threads:10 0.23s 1.17 GB/s 3.716
compress/pigz-p/level:2/threads:10 0.23s 1.17 GB/s 3.853
compress/pigzpp-p/level:2/threads:10 0.23s 1.16 GB/s 3.853
compress/bgzip-p/level:2/threads:10 0.23s 1.16 GB/s 3.576
compress/migz/level:2 0.42s 633 MB/s 3.952
compress/gzipng/level:3 1.50s 179 MB/s 4.100
compress/gzip/level:3 2.21s 121 MB/s 3.996
compress/minigzip/level:3 1.50s 179 MB/s 4.100
compress/gzipng-p/level:3/threads:10 0.29s 941 MB/s 3.985
compress/pigz-p/level:3/threads:10 0.28s 946 MB/s 4.150
compress/pigzpp-p/level:3/threads:10 0.28s 942 MB/s 4.150
compress/bgzip-p/level:3/threads:10 0.27s 988 MB/s 3.801
compress/migz/level:3 0.44s 608 MB/s 4.024
compress/gzipng/level:4 1.64s 164 MB/s 4.401
compress/gzip/level:4 2.68s 100 MB/s 4.280
compress/minigzip/level:4 1.64s 164 MB/s 4.401
compress/gzipng-p/level:4/threads:10 0.30s 901 MB/s 4.255
compress/pigz-p/level:4/threads:10 0.30s 888 MB/s 4.456
compress/pigzpp-p/level:4/threads:10 0.30s 896 MB/s 4.456
compress/bgzip-p/level:4/threads:10 0.29s 929 MB/s 4.005
compress/migz/level:4 0.56s 477 MB/s 4.273
compress/gzipng/level:5 1.67s 161 MB/s 4.541
compress/gzip/level:5 3.09s 87 MB/s 4.439
compress/minigzip/level:5 1.67s 161 MB/s 4.541
compress/gzipng-p/level:5/threads:10 0.31s 878 MB/s 4.386
compress/pigz-p/level:5/threads:10 0.31s 876 MB/s 4.599
compress/pigzpp-p/level:5/threads:10 0.31s 878 MB/s 4.599
compress/bgzip-p/level:5/threads:10 0.30s 884 MB/s 4.112
compress/migz/level:5 0.62s 435 MB/s 4.422
compress/gzipng/level:6 2.00s 134 MB/s 4.553
compress/gzip/level:6 3.74s 72 MB/s 4.518
compress/minigzip/level:6 1.99s 135 MB/s 4.553
compress/gzipng-p/level:6/threads:10 0.34s 790 MB/s 4.397
compress/pigz-p/level:6/threads:10 0.36s 752 MB/s 4.613
compress/pigzpp-p/level:6/threads:10 0.37s 731 MB/s 4.613
compress/bgzip-p/level:6/threads:10 0.33s 815 MB/s 4.121
compress/migz/level:6 0.69s 389 MB/s 4.498
compress/gzipng/level:7 2.56s 105 MB/s 4.574
compress/gzip/level:7 4.25s 63 MB/s 4.532
compress/minigzip/level:7 2.56s 105 MB/s 4.574
compress/gzipng-p/level:7/threads:10 0.41s 661 MB/s 4.414
compress/pigz-p/level:7/threads:10 0.41s 655 MB/s 4.635
compress/pigzpp-p/level:7/threads:10 0.41s 657 MB/s 4.635
compress/bgzip-p/level:7/threads:10 0.40s 668 MB/s 4.133
compress/migz/level:7 0.77s 350 MB/s 4.510
compress/gzipng/level:8 3.55s 76 MB/s 4.591
compress/gzip/level:8 6.30s 43 MB/s 4.564
compress/minigzip/level:8 3.56s 76 MB/s 4.591
compress/gzipng-p/level:8/threads:10 0.51s 530 MB/s 4.430
compress/pigz-p/level:8/threads:10 0.51s 523 MB/s 4.652
compress/pigzpp-p/level:8/threads:10 0.51s 524 MB/s 4.652
compress/bgzip-p/level:8/threads:10 0.51s 531 MB/s 4.147
compress/migz/level:8 1.06s 253 MB/s 4.540
compress/gzipng/level:9 3.19s 84 MB/s 4.479
compress/gzip/level:9 8.31s 32 MB/s 4.573
compress/minigzip/level:9 3.19s 84 MB/s 4.479
compress/gzipng-p/level:9/threads:10 0.47s 566 MB/s 4.328
compress/pigz-p/level:9/threads:10 0.49s 546 MB/s 4.532
compress/pigzpp-p/level:9/threads:10 0.48s 557 MB/s 4.532
compress/bgzip-p/level:9/threads:10 0.46s 582 MB/s 4.062
compress/migz/level:9 1.32s 203 MB/s 4.548
compress/gzipng-p/level:6/threads:1 2.00s 134 MB/s 4.553
compress/pigz-p/level:6/threads:1 1.99s 135 MB/s 4.613
compress/pigzpp-p/level:6/threads:1 2.01s 133 MB/s 4.613
compress/bgzip-p/level:6/threads:1 1.96s 137 MB/s 4.121
compress/gzipng-p/level:6/threads:2 0.96s 280 MB/s 4.397
compress/pigz-p/level:6/threads:2 1.00s 268 MB/s 4.613
compress/pigzpp-p/level:6/threads:2 1.02s 264 MB/s 4.613
compress/bgzip-p/level:6/threads:2 0.97s 276 MB/s 4.121
compress/gzipng-p/level:6/threads:4 0.53s 507 MB/s 4.397
compress/pigz-p/level:6/threads:4 0.55s 492 MB/s 4.613
compress/pigzpp-p/level:6/threads:4 0.55s 492 MB/s 4.613
compress/bgzip-p/level:6/threads:4 0.54s 498 MB/s 4.121
compress/gzipng-p/level:6/threads:8 0.36s 742 MB/s 4.397
compress/pigz-p/level:6/threads:8 0.37s 718 MB/s 4.613
compress/pigzpp-p/level:6/threads:8 0.37s 716 MB/s 4.613
compress/bgzip-p/level:6/threads:8 0.36s 750 MB/s 4.121
decompress/gzipng-p/from:gzipng-p/threads:1 0.22s 1.20 GB/s -
decompress/gzipng-p/from:gzipng-p/threads:2 0.11s 2.42 GB/s -
decompress/gzipng-p/from:gzipng-p/threads:4 0.06s 4.18 GB/s -
decompress/gzipng-p/from:gzipng-p/threads:8 0.04s 6.64 GB/s -
decompress/gzipng-p/from:gzipng-p/threads:10 0.04s 6.73 GB/s -
decompress/bgzip-p/from:bgzip-p/threads:1 0.26s 1.05 GB/s -
decompress/bgzip-p/from:bgzip-p/threads:2 0.13s 2.09 GB/s -
decompress/bgzip-p/from:bgzip-p/threads:4 0.08s 3.33 GB/s -
decompress/bgzip-p/from:bgzip-p/threads:8 0.05s 5.49 GB/s -
decompress/bgzip-p/from:bgzip-p/threads:10 0.05s 5.29 GB/s -
decompress/gzipng-p/from:bgzip-p/threads:10 0.04s 6.48 GB/s -
decompress/gzipng-p/from:migz/threads:10 0.04s 6.19 GB/s -
decompress/migz/from:migz 0.09s 2.88 GB/s -
decompress/gzipng/from:gzipng 0.21s 1.28 GB/s -
decompress/minigzip/from:minigzip 0.22s 1.25 GB/s -
decompress/pigz-p/from:pigz-p/threads:1 0.32s 845 MB/s -
decompress/pigz-p/from:pigz-p/threads:2 0.33s 816 MB/s -
decompress/pigz-p/from:pigz-p/threads:4 0.33s 816 MB/s -
decompress/pigz-p/from:pigz-p/threads:8 0.33s 816 MB/s -
decompress/pigz-p/from:pigz-p/threads:10 0.33s 816 MB/s -
decompress/pigzpp-p/from:pigzpp-p/threads:1 0.32s 852 MB/s -
decompress/pigzpp-p/from:pigzpp-p/threads:2 0.30s 897 MB/s -
decompress/pigzpp-p/from:pigzpp-p/threads:4 0.30s 898 MB/s -
decompress/pigzpp-p/from:pigzpp-p/threads:8 0.30s 895 MB/s -
decompress/pigzpp-p/from:pigzpp-p/threads:10 0.30s 892 MB/s -
decompress/gzip/from:gzip 0.81s 333 MB/s -
decompress/pigz-p/from:migz/threads:10 0.40s 669 MB/s -
decompress/pigzpp-p/from:migz/threads:10 0.36s 738 MB/s -
decompress/bgzip-p/from:migz/threads:10 0.24s 1.14 GB/s -
decompress/minigzip/from:migz 0.23s 1.19 GB/s -
decompress/gzip/from:migz 0.78s 344 MB/s -
decompress/pigz-p/from:bgzip-p/threads:10 0.57s 469 MB/s -
decompress/pigzpp-p/from:bgzip-p/threads:10 0.50s 537 MB/s -
decompress/minigzip/from:bgzip-p 0.25s 1.08 GB/s -
decompress/gzip/from:bgzip-p 0.84s 321 MB/s -
blocks/gzipng/mode:normal 356 blocks, 1 members, avg 19.8 kB compressed
blocks/gzipng/mode:rsyncable 16,573 blocks, 1 members, avg 425 B compressed
blocks/gzipng-p/mode:normal 828 blocks, 1 members, avg 8.8 kB compressed
blocks/pigz-p/mode:normal 754 blocks, 1 members, avg 9.2 kB compressed
blocks/pigz-p/mode:rsyncable 10,625 blocks, 1 members, avg 657 B compressed
blocks/pigz-p/mode:independent 969 blocks, 1 members, avg 7.3 kB compressed
blocks/pigzpp-p/mode:normal 751 blocks, 1 members, avg 9.3 kB compressed
blocks/pigzpp-p/mode:rsyncable 10,625 blocks, 1 members, avg 657 B compressed
blocks/pigzpp-p/mode:independent 969 blocks, 1 members, avg 7.3 kB compressed
blocks/gzip/mode:normal 553 blocks, 1 members, avg 12.9 kB compressed
blocks/gzip/mode:rsyncable 13,590 blocks, 1 members, avg 520 B compressed
blocks/minigzip/mode:normal 356 blocks, 1 members, avg 19.8 kB compressed
blocks/bgzip-p/mode:normal 648 blocks, 517 members, avg 12.0 kB compressed
blocks/migz/mode:normal 376 blocks, 64 members, avg 18.9 kB compressed
Raw
gzipbench-all-tools.json
{
"context": {
"date": "2026-09-04T17:22:28-0700",
"host_name": "Nathans-MacBook-Air-M5-2.local",
"num_cpus": 10,
"cpu_brand": "Apple M5",
"os": "macOS-26.6.2-arm64-arm-64bit-Mach-O",
"load_avg": [
2.17578125,
3.27294921875,
3.48046875
],
"input": {
"description": "synthetic mixed 256 MiB",
"bytes": 268435456
},
"runs": 3,
"warmup": 1,
"threads": [
1,
2,
4,
8,
10
],
"tools": {
"gzipng": "gzip-ng 2.0.0 (zlib-ng 2.3.90)",
"pigz": "pigz 2.8",
"pigzpp": "pigzpp 1.1.0 (based on pigz 2.8)",
"gzip": "gzip 1.14",
"minigzip": "minigzip",
"bgzip": "bgzip (htslib) 1.22.1",
"migz": "MiGz 2.0.beta-1 on openjdk version \"26.0.2.1\" 2026-08-18"
},
"zlibng": {
"version": "2.3.90",
"commit": "1239e8883f8e2f83f62041c4021d53654649ada4",
"branch": "develop",
"date": "2026-09-04T16:11:03-0700"
},
"missing": []
},
"benchmarks": [
{
"name": "compress/gzipng/level:1",
"kind": "compress",
"series": "gzip-ng",
"variant": "gzipng",
"level": 1,
"threads": null,
"seconds_mean": 0.8145242776566496,
"seconds_min": 0.8103000409901142,
"seconds_stddev": 0.00393621572707776,
"bytes_per_second": 329561025.2063658,
"output_bytes": 90372064,
"ratio": 2.970336673952694
},
{
"name": "compress/gzip/level:1",
"kind": "compress",
"series": "gzip",
"variant": "gzip",
"level": 1,
"threads": null,
"seconds_mean": 2.1366214860463515,
"seconds_min": 2.131277750013396,
"seconds_stddev": 0.005122915844112093,
"bytes_per_second": 125635475.33012903,
"output_bytes": 77699111,
"ratio": 3.454807301463205
},
{
"name": "compress/minigzip/level:1",
"kind": "compress",
"series": "minigzip",
"variant": "minigzip",
"level": 1,
"threads": null,
"seconds_mean": 0.8131256386792908,
"seconds_min": 0.8089552910532802,
"seconds_stddev": 0.003996535543353336,
"bytes_per_second": 330127895.65460384,
"output_bytes": 90372064,
"ratio": 2.970336673952694
},
{
"name": "compress/gzipng-p/level:1/threads:10",
"kind": "compress",
"series": "gzip-ng -p",
"variant": "gzipng-p",
"level": 1,
"threads": 10,
"seconds_mean": 0.19340533760841935,
"seconds_min": 0.18840162502601743,
"seconds_stddev": 0.004617297419578455,
"bytes_per_second": 1387942335.6117055,
"output_bytes": 92272648,
"ratio": 2.9091552244170993
},
{
"name": "compress/pigz-p/level:1/threads:10",
"kind": "compress",
"series": "pigz -p",
"variant": "pigz-p",
"level": 1,
"threads": 10,
"seconds_mean": 0.15198000420350583,
"seconds_min": 0.14729633403476328,
"seconds_stddev": 0.004375737234835405,
"bytes_per_second": 1766255089.9824743,
"output_bytes": 90108144,
"ratio": 2.9790365674383437
},
{
"name": "compress/pigzpp-p/level:1/threads:10",
"kind": "compress",
"series": "pigzpp -p",
"variant": "pigzpp-p",
"level": 1,
"threads": 10,
"seconds_mean": 0.15327535389224067,
"seconds_min": 0.14763666701037437,
"seconds_stddev": 0.009522374144278499,
"bytes_per_second": 1751328241.517041,
"output_bytes": 90108129,
"ratio": 2.979037063348635
},
{
"name": "compress/bgzip-p/level:1/threads:10",
"kind": "compress",
"series": "bgzip -@",
"variant": "bgzip-p",
"level": 1,
"threads": 10,
"seconds_mean": 0.1439328083069995,
"seconds_min": 0.13824883301276714,
"seconds_stddev": 0.0030052965799985606,
"bytes_per_second": 1865005339.3486514,
"output_bytes": 95512915,
"ratio": 2.8104623966298172
},
{
"name": "compress/migz/level:1",
"kind": "compress",
"series": "migz",
"variant": "migz",
"level": 1,
"threads": null,
"seconds_mean": 0.44831451659556476,
"seconds_min": 0.440517415991053,
"seconds_stddev": 0.004971043720606532,
"bytes_per_second": 598765924.5086682,
"output_bytes": 76585185,
"ratio": 3.5050572248405483
},
{
"name": "compress/gzipng/level:2",
"kind": "compress",
"series": "gzip-ng",
"variant": "gzipng",
"level": 2,
"threads": null,
"seconds_mean": 1.233690333707879,
"seconds_min": 1.22863391705323,
"seconds_stddev": 0.004707599796919891,
"bytes_per_second": 217587386.93624377,
"output_bytes": 70744821,
"ratio": 3.7944184776437555
},
{
"name": "compress/gzip/level:2",
"kind": "compress",
"series": "gzip",
"variant": "gzip",
"level": 2,
"threads": null,
"seconds_mean": 2.0229447360228128,
"seconds_min": 2.0192450830945745,
"seconds_stddev": 0.0038201143689091726,
"bytes_per_second": 132695397.56570634,
"output_bytes": 68778213,
"ratio": 3.9029140812367427
},
{
"name": "compress/minigzip/level:2",
"kind": "compress",
"series": "minigzip",
"variant": "minigzip",
"level": 2,
"threads": null,
"seconds_mean": 1.231703722034581,
"seconds_min": 1.2279739161022007,
"seconds_stddev": 0.004072496705239936,
"bytes_per_second": 217938333.05674097,
"output_bytes": 70744821,
"ratio": 3.7944184776437555
},
{
"name": "compress/gzipng-p/level:2/threads:10",
"kind": "compress",
"series": "gzip-ng -p",
"variant": "gzipng-p",
"level": 2,
"threads": 10,
"seconds_mean": 0.22852874055711758,
"seconds_min": 0.2247304170159623,
"seconds_stddev": 0.003926098080617553,
"bytes_per_second": 1174624492.9438462,
"output_bytes": 72229860,
"ratio": 3.716405597352674
},
{
"name": "compress/pigz-p/level:2/threads:10",
"kind": "compress",
"series": "pigz -p",
"variant": "pigz-p",
"level": 2,
"threads": 10,
"seconds_mean": 0.2294320461159158,
"seconds_min": 0.22538866696413606,
"seconds_stddev": 0.004055602115248446,
"bytes_per_second": 1169999834.5670445,
"output_bytes": 69671399,
"ratio": 3.8528787975105825
},
{
"name": "compress/pigzpp-p/level:2/threads:10",
"kind": "compress",
"series": "pigzpp -p",
"variant": "pigzpp-p",
"level": 2,
"threads": 10,
"seconds_mean": 0.232296685106121,
"seconds_min": 0.22046962496824563,
"seconds_stddev": 0.008212212344287189,
"bytes_per_second": 1155571616.8630197,
"output_bytes": 69671384,
"ratio": 3.8528796270216192
},
{
"name": "compress/bgzip-p/level:2/threads:10",
"kind": "compress",
"series": "bgzip -@",
"variant": "bgzip-p",
"level": 2,
"threads": 10,
"seconds_mean": 0.23075532419089642,
"seconds_min": 0.2259592500049621,
"seconds_stddev": 0.0034204075184434478,
"bytes_per_second": 1163290411.3533347,
"output_bytes": 75064920,
"ratio": 3.5760439896558873
},
{
"name": "compress/migz/level:2",
"kind": "compress",
"series": "migz",
"variant": "migz",
"level": 2,
"threads": null,
"seconds_mean": 0.42413052497431636,
"seconds_min": 0.41681487497407943,
"seconds_stddev": 0.00766810458372474,
"bytes_per_second": 632907655.0579692,
"output_bytes": 67918050,
"ratio": 3.9523433903064062
},
{
"name": "compress/gzipng/level:3",
"kind": "compress",
"series": "gzip-ng",
"variant": "gzipng",
"level": 3,
"threads": null,
"seconds_mean": 1.4982777916205425,
"seconds_min": 1.4969254999887198,
"seconds_stddev": 0.001751159831873918,
"bytes_per_second": 179162674.30598384,
"output_bytes": 65468146,
"ratio": 4.100245270425101
},
{
"name": "compress/gzip/level:3",
"kind": "compress",
"series": "gzip",
"variant": "gzip",
"level": 3,
"threads": null,
"seconds_mean": 2.2127275972937546,
"seconds_min": 2.2034439999843016,
"seconds_stddev": 0.011516490855184799,
"bytes_per_second": 121314280.31552832,
"output_bytes": 67174573,
"ratio": 3.9960872695089553
},
{
"name": "compress/minigzip/level:3",
"kind": "compress",
"series": "minigzip",
"variant": "minigzip",
"level": 3,
"threads": null,
"seconds_mean": 1.4958696943552543,
"seconds_min": 1.4936966249952093,
"seconds_stddev": 0.0021576685386756286,
"bytes_per_second": 179451095.9162792,
"output_bytes": 65468146,
"ratio": 4.100245270425101
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