FS#36565 - glibc: use lock elision per default

Attached to Project: Arch Linux
Opened by Michael Werner (Xaseron) - Friday, 16 August 2013, 15:09 GMT
Last edited by Allan McRae (Allan) - Sunday, 25 August 2013, 03:55 GMT
Task Type Feature Request
Category Packages: Core
Status Closed
Assigned To Allan McRae (Allan)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 1
Private No

Details

Why don't we enable lock elision per default in the glibc? It can enhance the multithread performance on Intel Haswell prozessors and would not harm any other cpu architecture.

more information: http://lwn.net/Articles/533894/

configure parameter: --enable-lock-elision=yes
This task depends upon

Closed by  Allan McRae (Allan)
Sunday, 25 August 2013, 03:55 GMT
Reason for closing:  Implemented
Additional comments about closing:  glibc-2.18-3 in [testing]
Comment by Allan McRae (Allan) - Friday, 16 August 2013, 21:57 GMT
Short answer is I do not think it is ready yet.
Comment by Allan McRae (Allan) - Monday, 19 August 2013, 10:10 GMT
I will build glibc with this later in the week (provided no more issues with the new release arrive that I need to patch), and stick it in [testing] for a while.

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