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| author | Pete Zaitcev <zaitcev@kotori.zaitcev.us> | 2017-05-24 14:35:15 -0600 |
|---|---|---|
| committer | Pete Zaitcev <zaitcev@kotori.zaitcev.us> | 2017-05-24 14:42:36 -0600 |
| commit | 0962144c51421a39be921876328bcecb912c7674 (patch) | |
| tree | fe473286b7ad52dfc12c62fac4afd5a41129cefd /.mailmap | |
| parent | de984f59e7a6cca8c1f3cf1d93b87ff144a2b974 (diff) | |
| download | liberasurecode-0962144c51421a39be921876328bcecb912c7674.tar.gz | |
Allow to disable optimizations for portability
We're having trouble on Fedora when the build system runs
on Intel CPUs. The ./configure detects AVX instructions and
builds liberasurecode with them. The resulting library crashes
with SIGILL when users run it on ADM CPUs without AVX.
See the details here:
https://bugzilla.redhat.com/show_bug.cgi?id=1454543
The patch allows to disable the optimizations, so that
distro packaging then can invoke this options and build
portable libraries.
For the record, "make test" runs about 16% slower on an Intel
CPU if optimizations are disabled. So, there's a measurable
performance impact. However, operators intersted in outright
performance might want to consider Erasure Coding implementations
other than the one built-in into liberasurecode. The library
supports other back-ends that are significantly faster than
even optimized built-in code.
Change-Id: I09603b97ceeb833ba582cf3217e0be51c019d645
Diffstat (limited to '.mailmap')
0 files changed, 0 insertions, 0 deletions