FUTEX_WAKE_PRIVATE use 100% cpu

[poiuty]

Debian 8, Percona Server version 5.5.44-37.3-log
One process always use 100% CPU.
https://poiuty.com/img/b67f65ff1666b7175165acd04f57.png

If set innodb_thread_concurrency = 0 => the number of this processes increases.
Does not matter get mysql load or not => this process use 100% cpu.

my.cnf => https://dl.dropboxusercontent.com/u/59491914/config/percona.cnf

futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136120) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77eac4, FUTEX_WAIT_PRIVATE, 3621, NULL) = 0
futex(0x7f59ec77ea80, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136126) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77eac4, FUTEX_WAIT_PRIVATE, 3623, NULL) = 0
futex(0x7f59ec77ea80, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136132) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136138) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
sched_yield() = 0
futex(0x7f59ec77ea44, FUTEX_WAIT_PRIVATE, 136140, NULL) = 0
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136144) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
sched_yield() = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136150) = 2
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136158) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136162) = 2
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136164) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136180) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
sched_yield() = 0
sched_yield() = 0
sched_yield() = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136196) = 2
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136198) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
sched_yield() = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136230) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136232) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136238) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1
sched_yield() = 0
sched_yield() = 0
futex(0x7f59ec77ea44, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x7f59ec77ea00, 136264) = 1
futex(0x7f59ec77ea00, FUTEX_WAKE_PRIVATE, 1) = 1

[poiuty (poiuty)]

Now it`s 4 process => use 400% CPU.
If we restart mysql => processes disappear
and if we wait some times => we'll see it again.

[poiuty (poiuty)]

strange load, not change.
https://poiuty.com/img/17ee272558ad18b6ca426a61306b.png

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-3305