https://issues.dlang.org/show_bug.cgi?id=21560
Witold Baryluk <witold.barylu...@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|md5 |md5 poor performance out of | |the box --- Comment #1 from Witold Baryluk <witold.barylu...@gmail.com> --- 100GB sparse file in tmpfs. phobos: 009f07e9b8fb09a820dd180441502d46 /usr/lib/live/mount/overlay/rw/var/lib/docker/devicemapper/devicemapper/data real 3m23.589s md5sum from Debian testing: 009f07e9b8fb09a820dd180441502d46 /usr/lib/live/mount/overlay/rw/var/lib/docker/devicemapper/devicemapper/data real 2m20.709s 32KiB buffers were used in both cases (confirmed by strace). Code compiled in release mode, with optimisations enabled. AMD ThreadRipper 2950X, water cooled. 128GB , quad channel DDR4-2933 memory. Linux 5.10.4 --