Comment 5 for bug 941889

I am trying to repeat the problem on Linux. I run latest MariaDB 5.2 and 5.3, compiled with compile-pentium-max.

I'm using sysbench with this lua file:
== tests/db/_select_one.lua ==
pathtest = string.match(test, "(.*/)") or ""

dofile(pathtest .. "common.lua")

function thread_init(thread_id)
   set_vars()
end

function event(thread_id)
   rs = db_query("select 1")
end
== EOF ==

and I run sysbench with:
./sysbench --test=./tests/db/_select_one.lua --db-driver=mysql --mysql-user=root --mysql-socket=/tmp/mysql.sock --max-requests=100000 run

My results from two runs are:
== 5.2 ==
...
    response time:
         min: 0.08ms
         avg: 0.09ms
         max: 1.27ms
         approx. 95 percentile: 0.09ms
...
    response time:
         min: 0.04ms
         avg: 0.09ms
         max: 1.22ms
         approx. 95 percentile: 0.09ms

== 5.3 ==
...
    response time:
         min: 0.04ms
         avg: 0.09ms
         max: 1.32ms
         approx. 95 percentile: 0.10ms
...
    response time:
         min: 0.04ms
         avg: 0.09ms
         max: 1.54ms
         approx. 95 percentile: 0.10ms