This bug was fixed in the package coreutils - 8.25-2ubuntu3~16.04
---
coreutils (8.25-2ubuntu3~16.04) xenial-proposed; urgency=medium
* SRU: LP: #1667407. Add -fno-schedule-insns to CFLAGS for sha256.o
on ppc64el to fix performance regression.
-- Matthias Klose
@doko I already added the verification-done-xenial tag so I guess that's
all that's needed to do, right?
** Tags removed: verification-done
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** Tags added: verification-done
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https://bugs.launchpad.net/bugs/1667407
Title:
improve 2x-3x sha256sum performance on ppc64le due to current gcc
Tested on xenial (16.04).
Test input of 465MB took 4.5s (version 8.25-2ubuntu3~16.04) instead of
15.1s (version 8.25-2ubuntu2).
Thanks
** Tags removed: removal-candidate
** Tags added: verification-done-xenial
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Touch
Is that all? Please point out if I missed something.
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https://bugs.launchpad.net/bugs/1667407
Title:
improve 2x-3x sha256sum performance on ppc64le due
Thank you for testing Yakkety. I can release 8.25-2ubuntu3~16.10 to
yakkety-updates. 8.25-2ubuntu3~16.04 still needs testing from xenial-
updates though.
** Tags removed: verification-done
** Tags added: verification-done-yakkety
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This bug was fixed in the package coreutils - 8.25-2ubuntu3~16.10
---
coreutils (8.25-2ubuntu3~16.10) yakkety-proposed; urgency=medium
* SRU: LP: #1667407. Add -fno-schedule-insns to CFLAGS for sha256.o
on ppc64el to fix performance regression.
-- Matthias Klose
Hi, is there anything else I can do in order to have the 8.25-2ubuntu3
on yakkety? (not on proposed)
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Title:
just to give an idea, to verify the sha256 of ubuntu-16.10-server-
ppc64el.iso:
8.25-2ubuntu2 : 0m15.204s
8.25-2ubuntu3~16.10: 0m4.952s
great!
** Tags removed: verification-needed
** Tags added: verification-done
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Fix verified on coreutils_8.25-2ubuntu3~16.10_ppc64el.deb
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https://bugs.launchpad.net/bugs/1667407
Title:
improve 2x-3x sha256sum performance on ppc64le
Hello Gustavo, or anyone else affected,
Accepted coreutils into yakkety-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/coreutils/8.25-2ubuntu3~16.10 in a
few hours, and then in the -proposed repository.
Please help us by testing this new package.
> -Original Message-
> From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of
> Lukasz Zemczak
> Sent: quinta-feira, 2 de março de 2017 10:31
> To: Gustavo Serra Scalet
> Subject: [Bug 1667407] Re: improve 2x-3x sha256sum performance on
>
** Description changed:
- Dear Maintainer,
+ [Impact]
+ * Performance drop of 2x-3x on ppc64le when using sha256sum
+
+ * Please backport this bug to last LTS as this application is widely
+ used.
+
+ * This fix is due to a optimization issue found on gcc v4.9 to gcc
+ v7.0.
+
+ [Test
Could we get the bug details updated to follow the SRU template?
Also, checking the SRU upload, one thing I don't particularly like is
that the attached patch has no description. Yes, the change is self-
explanatory, but some context in patch descriptions is always welcome.
Won't block on that
fixed in zesty with 8.26-3ubuntu1
** Changed in: coreutils (Ubuntu)
Status: New => Fix Released
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Title:
** Also affects: coreutils (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Also affects: coreutils (Ubuntu Xenial)
Importance: Undecided
Status: New
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** Changed in: coreutils (Debian)
Status: Unknown => Fix Released
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Title:
improve 2x-3x sha256sum
One other possibility (as performed by Fedora) is to have libcrypto
(from openssl) configured through the "--with-openssl=yes" parameter.
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** Tags added: yakkety
** Bug watch added: Debian Bug tracker #854053
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854053
** Also affects: coreutils (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=854053
Importance: Unknown
Status: Unknown
** Changed in:
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