Source: coreutils
Severity: normal
Dear Maintainer,
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Subject: coreutils: sha256sum and md5sum very slow on ppc64el
Source: coreutils
Severity: normal
User: debian-powe...@lists.debian.org
Usertag: ppc64el
Dear Maintainer,
The commands sha256sum and md5sum provided by coreutils are extremely
slow on ppc64el arch when run on somewhat large files.
Although when coreutils is configured and built with --with-openssl
flag, the performance gets significantly better.
So, the patch I am attaching does that. Could you please consider it?
Thanks!
Here is some additional data:
$ ls -lh yakkety-server-ppc64el.iso
-rw-r--r-- 1 root root 631M Jan 31 14:48 yakkety-server-ppc64el.iso
$ ldd /usr/bin/sha256sum
linux-vdso64.so.1 (0x00003fffada90000)
libc.so.6 => /lib/powerpc64le-linux-gnu/libc.so.6 (0x00003fffad890000)
/lib64/ld64.so.2 (0x000000002e2a0000)
$ time /usr/bin/sha256sum yakkety-server-ppc64el.iso
d14bdb413ea6cdc8d9354fcbc37a834b7de0c23f992deb0c6764d0fd5d65408e
yakkety-server-ppc64el.iso
real 0m16.657s
user 0m16.429s
sys 0m0.136s
$ ldd src/sha256sum
linux-vdso64.so.1 (0x00003fffaddd0000)
libcrypto.so.1.1 => /usr/lib/powerpc64le-linux-gnu/libcrypto.so.1.1
(0x00003fffadb20000)
libc.so.6 => /lib/powerpc64le-linux-gnu/libc.so.6 (0x00003fffad960000)
libdl.so.2 => /lib/powerpc64le-linux-gnu/libdl.so.2 (0x00003fffad930000)
libpthread.so.0 => /lib/powerpc64le-linux-gnu/libpthread.so.0
(0x00003fffad8f0000)
/lib64/ld64.so.2 (0x000000002b650000)
$ time ./src/sha256sum ./yakkety-server-ppc64el.iso
d14bdb413ea6cdc8d9354fcbc37a834b7de0c23f992deb0c6764d0fd5d65408e
./yakkety-server-ppc64el.iso
real 0m1.912s
user 0m1.774s
sys 0m0.132s
-- System Information:
Debian Release: 8.6
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'),
(500, 'stable'), (1, 'experimental')
Architecture: ppc64el (ppc64le)
Kernel: Linux 4.8.0-1-powerpc64le (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL
set to en_US.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
-- no debconf information
