Re: x86: PIE support and option to extend KASLR randomization
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2017-08-25 01:07:00
Also in:
kvm, linux-arch, linux-pm, xen-devel
On Thu, 24 Aug 2017 14:13:38 -0700 Thomas Garnier [off-list ref] wrote:
With the fix for function tracing, the hackbench results have an average of +0.8 to +1.4% (from +8% to +10% before). With a default configuration, the numbers are closer to 0.8%.
Wow, an empty fentry function not "nop"ed out only added 8% to 10% overhead. I never did the benchmarks of that since I did it before fentry was introduced, which was with the old "mcount". That gave an average of 13% overhead in hackbench. -- Steve _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel