Quotes of the week [LWN.net]

Quotes of the week

Posted Jun 14, 2012 12:12 UTC (Thu) by richmoore (guest, #53133)
In reply to: Quotes of the week by Felix.Braun
Parent article: Quotes of the week

IIRC the syscall convention for x86-64 is much faster.

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Quotes of the week

Posted Jun 14, 2012 13:08 UTC (Thu) by k3ninho (subscriber, #50375) [Link] (2 responses)

And you get twice the CPU register count.

Quotes of the week

Posted Jun 14, 2012 21:44 UTC (Thu) by ballombe (subscriber, #9523) [Link] (1 responses)

and much faster multiprecision arithmetic too!

Quotes of the week

Posted Jun 15, 2012 23:18 UTC (Fri) by faramir (subscriber, #2327) [Link]

If you are running an x86 user space...

1. syscalls probably won't be faster.
2. there certainly won't be more registers for user space apps.
3. multiprecision arithmetic is rare no matter what.

Even with those issues, I would still be happy to stop using a PAE kernel if I could retain my x86 user space. Unfortunately, I don't run Debian and it appears that is the only distribution that supports this out of the box.