[Bug 1563784] Comment bridged from LTC Bugzilla

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------- Comment From STLI at de.ibm.com 2016-04-06 09:05 EDT-------
(In reply to comment #6)
> What's wrong with the s390x lock elision implementation that makes it
> fundamentally worse than other architectures?  This is a pretty strange
> request, given the obvious benefits of lock elision.
We haven't seen real overall advantage, yet.
Thus the current suggestion is to disable it.
Have you compared an usual workload with and without lock elision on s390.
And/Or on other architectures?

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https://bugs.launchpad.net/bugs/1563784

Title:
  S390: glibc should not be configured with lock elision.

Status in glibc package in Ubuntu:
  Incomplete

Bug description:
  == Comment: #0 - Stefan Liebler <STLI at de.ibm.com> - 2016-03-30 03:11:44 ==
  Hi,

  The current glibc for s390 is configured with --enable-lock-elision.
  This could lead to an overall performance regression compared to locks without transactions.
  Please disable lock-elsion for s390.

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