AMD Ryzen 9 7950X (KVM, 2 vCPUs) · rustc 1.99.1 · C at -O3 · full Silesia files · 2026-11-10. Each standard graph compresses every listed Silesia file as one
input with the library defaults (level 6, format version 27, both checksums).
Every frame was verified byte-identical to OpenZL v0.3.0 C, and both decoders
restored the input, before timing; compressed sizes are therefore equal.
Throughput is MB/s (10⁶ bytes per second) of uncompressed bytes, from the
median of alternating rounds; a graph’s figure is its total bytes over its
total median time. “/ C” is mopenzl’s speed relative to C (above 1× is faster).
Raw measurements: silesia-2026-11-10/ · how to reproduce .
Graph Files C compress mopenzl compress / C C decompress mopenzl decompress / C
zstd 12 142 MB/s 142 MB/s 0.99× 1,304 MB/s 1,231 MB/s 0.94× lz4 12 80.2 MB/s 75.7 MB/s 0.94× 2,552 MB/s 2,394 MB/s 0.94× lz 12 114 MB/s 96.1 MB/s 0.85× 677 MB/s 1,036 MB/s 1.53× huffman 12 1,125 MB/s 1,052 MB/s 0.94× 1,591 MB/s 1,235 MB/s 0.78× fse 12 619 MB/s 597 MB/s 0.96× 1,090 MB/s 955 MB/s 0.88× entropy 12 1,075 MB/s 989 MB/s 0.92× 1,507 MB/s 1,198 MB/s 0.79× huffman_pivco 12 967 MB/s 1,054 MB/s 1.09× 2,325 MB/s 2,422 MB/s 1.04× flatpack 12 985 MB/s 1,425 MB/s 1.45× 2,733 MB/s 4,073 MB/s 1.49× generic 12 145 MB/s 141 MB/s 0.97× 1,541 MB/s 1,487 MB/s 0.96× field_lz_struct4 3 89.5 MB/s 73.2 MB/s 0.82× 1,946 MB/s 1,398 MB/s 0.72× bitpack_num16 2 4,721 MB/s 8,438 MB/s 1.79× 7,666 MB/s 17,192 MB/s 2.24× numeric16 2 28.3 MB/s 26.7 MB/s 0.95× 1,020 MB/s 810 MB/s 0.79× numeric32 3 88.8 MB/s 75.9 MB/s 0.85× 1,840 MB/s 1,241 MB/s 0.67× generic_num16 2 28.6 MB/s 25.2 MB/s 0.88× 964 MB/s 799 MB/s 0.83× generic_num32 3 80.9 MB/s 71.5 MB/s 0.88× 1,810 MB/s 1,188 MB/s 0.66×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 2.982 102 MB/s 102 MB/s 1.00× 1,326 MB/s 1,324 MB/s 1.00× mozilla 51220480 2.986 143 MB/s 139 MB/s 0.97× 916 MB/s 865 MB/s 0.94× mr 9970564 2.944 132 MB/s 131 MB/s 0.99× 1,599 MB/s 1,479 MB/s 0.92× nci 33553445 13.830 264 MB/s 258 MB/s 0.98× 2,939 MB/s 2,427 MB/s 0.83× ooffice 6152192 2.099 117 MB/s 113 MB/s 0.96× 1,302 MB/s 1,256 MB/s 0.96× osdb 10085684 2.970 149 MB/s 152 MB/s 1.02× 2,079 MB/s 2,164 MB/s 1.04× reymont 6627202 3.735 118 MB/s 117 MB/s 0.98× 1,747 MB/s 1,754 MB/s 1.00× samba 21606400 4.724 179 MB/s 173 MB/s 0.97× 2,157 MB/s 1,740 MB/s 0.81× sao 7251944 1.375 94.3 MB/s 101 MB/s 1.07× 1,373 MB/s 1,275 MB/s 0.93× webster 41458703 3.836 117 MB/s 118 MB/s 1.01× 958 MB/s 948 MB/s 0.99× x-ray 8474240 1.526 110 MB/s 114 MB/s 1.04× 1,131 MB/s 1,073 MB/s 0.95× xml 5345280 9.777 249 MB/s 236 MB/s 0.95× 2,868 MB/s 3,270 MB/s 1.14×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 2.284 49.4 MB/s 48.7 MB/s 0.99× 3,926 MB/s 3,393 MB/s 0.86× mozilla 51220480 2.309 93.4 MB/s 88.3 MB/s 0.95× 1,718 MB/s 1,684 MB/s 0.98× mr 9970564 2.308 58.6 MB/s 57.5 MB/s 0.98× 4,423 MB/s 3,792 MB/s 0.86× nci 33553445 8.889 136 MB/s 112 MB/s 0.83× 5,813 MB/s 5,269 MB/s 0.91× ooffice 6152192 1.733 61.6 MB/s 58.0 MB/s 0.94× 3,530 MB/s 3,183 MB/s 0.90× osdb 10085684 2.534 92.0 MB/s 87.5 MB/s 0.95× 4,904 MB/s 4,351 MB/s 0.89× reymont 6627202 3.055 50.0 MB/s 49.0 MB/s 0.98× 3,855 MB/s 3,652 MB/s 0.95× samba 21606400 3.508 108 MB/s 105 MB/s 0.97× 4,398 MB/s 4,132 MB/s 0.94× sao 7251944 1.261 46.4 MB/s 45.0 MB/s 0.97× 3,240 MB/s 3,000 MB/s 0.93× webster 41458703 2.945 68.4 MB/s 65.5 MB/s 0.96× 1,561 MB/s 1,442 MB/s 0.92× x-ray 8474240 1.181 65.3 MB/s 59.1 MB/s 0.91× 3,320 MB/s 3,084 MB/s 0.93× xml 5345280 6.844 144 MB/s 137 MB/s 0.95× 6,412 MB/s 5,843 MB/s 0.91×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 2.935 62.9 MB/s 55.9 MB/s 0.89× 436 MB/s 647 MB/s 1.48× mozilla 51220480 2.713 120 MB/s 97.9 MB/s 0.82× 617 MB/s 1,032 MB/s 1.67× mr 9970564 2.954 105 MB/s 87.2 MB/s 0.83× 525 MB/s 908 MB/s 1.73× nci 33553445 12.380 197 MB/s 191 MB/s 0.97× 1,384 MB/s 1,549 MB/s 1.12× ooffice 6152192 1.972 95.5 MB/s 78.5 MB/s 0.82× 593 MB/s 737 MB/s 1.24× osdb 10085684 2.945 134 MB/s 112 MB/s 0.84× 824 MB/s 1,135 MB/s 1.38× reymont 6627202 3.651 87.5 MB/s 67.9 MB/s 0.78× 590 MB/s 1,104 MB/s 1.87× samba 21606400 4.437 144 MB/s 112 MB/s 0.78× 942 MB/s 1,327 MB/s 1.41× sao 7251944 1.370 94.5 MB/s 76.2 MB/s 0.81× 618 MB/s 825 MB/s 1.34× webster 41458703 3.739 91.5 MB/s 78.8 MB/s 0.86× 582 MB/s 930 MB/s 1.60× x-ray 8474240 1.477 101 MB/s 87.5 MB/s 0.86× 421 MB/s 770 MB/s 1.83× xml 5345280 8.950 177 MB/s 162 MB/s 0.92× 1,396 MB/s 2,021 MB/s 1.45×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 1.748 1,228 MB/s 1,166 MB/s 0.95× 2,119 MB/s 1,482 MB/s 0.70× mozilla 51220480 1.441 1,000 MB/s 977 MB/s 0.98× 1,338 MB/s 1,049 MB/s 0.78× mr 9970564 2.250 1,103 MB/s 1,047 MB/s 0.95× 1,984 MB/s 1,398 MB/s 0.70× nci 33553445 3.256 1,213 MB/s 1,137 MB/s 0.94× 1,841 MB/s 1,441 MB/s 0.78× ooffice 6152192 1.268 1,156 MB/s 1,095 MB/s 0.95× 1,584 MB/s 1,041 MB/s 0.66× osdb 10085684 1.202 1,100 MB/s 1,028 MB/s 0.93× 1,447 MB/s 1,177 MB/s 0.81× reymont 6627202 1.658 1,378 MB/s 998 MB/s 0.72× 2,021 MB/s 1,610 MB/s 0.80× samba 21606400 1.514 1,212 MB/s 1,084 MB/s 0.89× 1,584 MB/s 1,172 MB/s 0.74× sao 7251944 1.074 1,195 MB/s 1,102 MB/s 0.92× 1,529 MB/s 1,101 MB/s 0.72× webster 41458703 1.599 1,102 MB/s 1,045 MB/s 0.95× 1,622 MB/s 1,342 MB/s 0.83× x-ray 8474240 1.247 1,130 MB/s 976 MB/s 0.86× 1,373 MB/s 1,098 MB/s 0.80× xml 5345280 1.609 1,368 MB/s 1,208 MB/s 0.88× 2,063 MB/s 1,610 MB/s 0.78×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 1.761 564 MB/s 562 MB/s 1.00× 972 MB/s 864 MB/s 0.89× mozilla 51220480 1.443 532 MB/s 488 MB/s 0.92× 1,077 MB/s 966 MB/s 0.90× mr 9970564 2.272 656 MB/s 580 MB/s 0.89× 1,090 MB/s 897 MB/s 0.82× nci 33553445 3.273 681 MB/s 653 MB/s 0.96× 1,029 MB/s 844 MB/s 0.82× ooffice 6152192 1.266 686 MB/s 652 MB/s 0.95× 1,172 MB/s 1,071 MB/s 0.91× osdb 10085684 1.202 673 MB/s 642 MB/s 0.95× 1,141 MB/s 1,007 MB/s 0.88× reymont 6627202 1.665 730 MB/s 698 MB/s 0.96× 1,254 MB/s 1,104 MB/s 0.88× samba 21606400 1.520 582 MB/s 654 MB/s 1.12× 1,111 MB/s 998 MB/s 0.90× sao 7251944 1.070 687 MB/s 643 MB/s 0.94× 1,254 MB/s 1,101 MB/s 0.88× webster 41458703 1.607 665 MB/s 659 MB/s 0.99× 1,065 MB/s 966 MB/s 0.91× x-ray 8474240 1.245 671 MB/s 614 MB/s 0.92× 1,224 MB/s 1,020 MB/s 0.83× xml 5345280 1.618 667 MB/s 684 MB/s 1.03× 1,264 MB/s 1,071 MB/s 0.85×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 1.748 1,172 MB/s 1,152 MB/s 0.98× 1,953 MB/s 1,487 MB/s 0.76× mozilla 51220480 1.442 1,038 MB/s 978 MB/s 0.94× 1,362 MB/s 1,056 MB/s 0.78× mr 9970564 2.258 1,065 MB/s 975 MB/s 0.92× 1,802 MB/s 1,378 MB/s 0.76× nci 33553445 3.256 1,137 MB/s 975 MB/s 0.86× 1,500 MB/s 1,481 MB/s 0.99× ooffice 6152192 1.268 1,078 MB/s 1,048 MB/s 0.97× 1,433 MB/s 1,123 MB/s 0.78× osdb 10085684 1.202 1,104 MB/s 952 MB/s 0.86× 1,375 MB/s 981 MB/s 0.71× reymont 6627202 1.658 1,330 MB/s 1,041 MB/s 0.78× 1,991 MB/s 1,609 MB/s 0.81× samba 21606400 1.514 1,094 MB/s 959 MB/s 0.88× 1,441 MB/s 1,020 MB/s 0.71× sao 7251944 1.074 1,123 MB/s 907 MB/s 0.81× 1,305 MB/s 1,114 MB/s 0.85× webster 41458703 1.599 983 MB/s 1,024 MB/s 1.04× 1,622 MB/s 1,253 MB/s 0.77× x-ray 8474240 1.247 1,054 MB/s 965 MB/s 0.92× 1,434 MB/s 1,088 MB/s 0.76× xml 5345280 1.609 1,374 MB/s 929 MB/s 0.68× 1,837 MB/s 1,649 MB/s 0.90×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 1.745 1,008 MB/s 1,140 MB/s 1.13× 3,210 MB/s 3,281 MB/s 1.02× mozilla 51220480 1.439 903 MB/s 913 MB/s 1.01× 1,859 MB/s 1,962 MB/s 1.06× mr 9970564 2.247 987 MB/s 1,281 MB/s 1.30× 3,462 MB/s 3,490 MB/s 1.01× nci 33553445 3.251 1,130 MB/s 1,575 MB/s 1.39× 2,787 MB/s 2,979 MB/s 1.07× ooffice 6152192 1.266 974 MB/s 992 MB/s 1.02× 2,871 MB/s 3,066 MB/s 1.07× osdb 10085684 1.200 913 MB/s 832 MB/s 0.91× 2,457 MB/s 2,447 MB/s 1.00× reymont 6627202 1.656 1,136 MB/s 1,179 MB/s 1.04× 3,466 MB/s 4,167 MB/s 1.20× samba 21606400 1.512 932 MB/s 1,004 MB/s 1.08× 2,149 MB/s 2,179 MB/s 1.01× sao 7251944 1.073 831 MB/s 888 MB/s 1.07× 2,729 MB/s 2,802 MB/s 1.03× webster 41458703 1.597 937 MB/s 1,027 MB/s 1.10× 2,046 MB/s 2,099 MB/s 1.03× x-ray 8474240 1.246 973 MB/s 991 MB/s 1.02× 3,004 MB/s 2,918 MB/s 0.97× xml 5345280 1.607 1,203 MB/s 1,213 MB/s 1.01× 3,478 MB/s 4,131 MB/s 1.19×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 1.143 1,154 MB/s 1,958 MB/s 1.70× 1,515 MB/s 2,562 MB/s 1.69× mozilla 51220480 1.000 847 MB/s 1,119 MB/s 1.32× 5,774 MB/s 8,016 MB/s 1.39× mr 9970564 1.000 1,397 MB/s 1,954 MB/s 1.40× 12,087 MB/s 17,584 MB/s 1.45× nci 33553445 1.333 1,074 MB/s 1,792 MB/s 1.67× 1,536 MB/s 2,249 MB/s 1.46× ooffice 6152192 1.000 1,416 MB/s 2,108 MB/s 1.49× 13,131 MB/s 19,621 MB/s 1.49× osdb 10085684 1.000 1,357 MB/s 1,871 MB/s 1.38× 11,147 MB/s 17,714 MB/s 1.59× reymont 6627202 1.000 1,391 MB/s 2,076 MB/s 1.49× 13,042 MB/s 19,593 MB/s 1.50× samba 21606400 1.000 1,093 MB/s 1,421 MB/s 1.30× 6,972 MB/s 10,658 MB/s 1.53× sao 7251944 1.000 1,352 MB/s 1,968 MB/s 1.46× 12,698 MB/s 18,868 MB/s 1.49× webster 41458703 1.143 751 MB/s 1,133 MB/s 1.51× 1,401 MB/s 2,067 MB/s 1.48× x-ray 8474240 1.000 1,367 MB/s 1,921 MB/s 1.41× 12,384 MB/s 18,283 MB/s 1.48× xml 5345280 1.143 1,231 MB/s 2,142 MB/s 1.74× 1,552 MB/s 2,633 MB/s 1.70×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
dickens 10192446 2.982 102 MB/s 100 MB/s 0.99× 1,431 MB/s 1,191 MB/s 0.83× mozilla 51220480 2.986 147 MB/s 144 MB/s 0.98× 1,303 MB/s 1,257 MB/s 0.96× mr 9970564 2.944 134 MB/s 130 MB/s 0.97× 1,546 MB/s 1,482 MB/s 0.96× nci 33553445 13.830 263 MB/s 259 MB/s 0.99× 2,924 MB/s 2,598 MB/s 0.89× ooffice 6152192 2.099 115 MB/s 109 MB/s 0.95× 1,301 MB/s 1,066 MB/s 0.82× osdb 10085684 2.970 149 MB/s 145 MB/s 0.98× 1,857 MB/s 1,973 MB/s 1.06× reymont 6627202 3.735 103 MB/s 104 MB/s 1.01× 1,695 MB/s 1,613 MB/s 0.95× samba 21606400 4.724 190 MB/s 172 MB/s 0.90× 2,024 MB/s 1,945 MB/s 0.96× sao 7251944 1.375 108 MB/s 105 MB/s 0.97× 1,249 MB/s 1,261 MB/s 1.01× webster 41458703 3.836 121 MB/s 118 MB/s 0.98× 1,254 MB/s 1,341 MB/s 1.07× x-ray 8474240 1.526 107 MB/s 105 MB/s 0.98× 1,071 MB/s 925 MB/s 0.86× xml 5345280 9.777 248 MB/s 237 MB/s 0.96× 3,317 MB/s 3,212 MB/s 0.97×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
sao 7251944 1.471 62.8 MB/s 43.1 MB/s 0.69× 1,379 MB/s 1,116 MB/s 0.81× osdb 10085684 3.027 60.8 MB/s 50.3 MB/s 0.83× 1,727 MB/s 1,318 MB/s 0.76× nci 33553444 12.506 117 MB/s 103 MB/s 0.88× 2,230 MB/s 1,508 MB/s 0.68×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
mr 9970564 1.000 4,316 MB/s 8,106 MB/s 1.88× 7,495 MB/s 16,517 MB/s 2.20× x-ray 8474240 1.000 5,308 MB/s 8,865 MB/s 1.67× 7,876 MB/s 18,060 MB/s 2.29×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
mr 9970564 3.178 34.9 MB/s 32.2 MB/s 0.92× 1,338 MB/s 1,097 MB/s 0.82× x-ray 8474240 1.636 23.1 MB/s 22.3 MB/s 0.96× 797 MB/s 619 MB/s 0.78×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
sao 7251944 1.471 66.1 MB/s 45.9 MB/s 0.69× 1,339 MB/s 1,105 MB/s 0.83× osdb 10085684 3.027 57.7 MB/s 47.7 MB/s 0.83× 1,599 MB/s 1,129 MB/s 0.71× nci 33553444 12.506 116 MB/s 112 MB/s 0.96× 2,107 MB/s 1,315 MB/s 0.62×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
mr 9970564 3.178 36.9 MB/s 30.2 MB/s 0.82× 1,325 MB/s 1,070 MB/s 0.81× x-ray 8474240 1.636 22.6 MB/s 21.1 MB/s 0.94× 730 MB/s 616 MB/s 0.84×
File Bytes Ratio C compress mopenzl compress / C C decompress mopenzl decompress / C
sao 7251944 1.471 60.5 MB/s 44.6 MB/s 0.74× 1,220 MB/s 1,042 MB/s 0.85× osdb 10085684 3.027 52.2 MB/s 44.1 MB/s 0.84× 1,507 MB/s 1,069 MB/s 0.71× nci 33553444 12.506 106 MB/s 105 MB/s 0.99× 2,167 MB/s 1,270 MB/s 0.59×