Hi Pranith,
FYI, these changes look nice:
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev
commit 0eb885afb20317016670c1c5dd3a436c91e1e910 ("rcu: Use
rcu_gp_kthread_wake() to wake up grace period kthreads")
test case: lkp-a04/aim7/400-disk_rr
It's an in-memory aim7/disk_rr test.
lkp-a04 is an Atom micro server with 8G Memory.
5db6a289a3a0a69 0eb885afb20317016670c1c5d
--------------- -------------------------
150860 ± 1% -25.8% 111937 ± 1% TOTAL softirqs.RCU
2809 ± 1% -12.5% 2457 ± 1% TOTAL vmstat.system.cs
4202 ± 1% -6.9% 3911 ± 1% TOTAL vmstat.system.in
212421 ± 2% -7.7% 196035 ± 3% TOTAL
time.involuntary_context_switches
vmstat.system.in
4300 ++-------------------------------------------------------------------+
| .*.. *.. .*.. * |
4250 *+ .*.. + .*. * *.. .. : |
4200 ++ *..*..*. *.. + *..*. : .. * : |
| * : .* : .* |
4150 ++ : .*..*. *. |
4100 ++ *. |
| |
4050 ++ |
4000 ++ |
| O O O O O |
3950 O+ O O O O O O O O O O |
3900 ++ O O O O |
| O |
3850 ++-------------------------O-----------------------------------O-----O
vmstat.system.cs
3000 ++-------------------------------------------------------------------+
| |
2900 ++ *.. |
*..*..*..*..*..*..*.. .. *..*..*..*..*.. .*.. .*.. |
2800 ++ * .*. *. .* |
| *..*..*. *. |
2700 ++ |
| |
2600 ++ |
| O O |
2500 O+ O O O O O O O O O O O |
| O O O O O |
2400 ++ O O O O
| O |
2300 ++-------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Fengguang
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