# percona 5.7 use 100% one cpu core without and queries. **URL:** https://forums.percona.com/t/percona-5-7-use-100-one-cpu-core-without-and-queries/5037 **Category:** Percona Server for MySQL 5.7 **Created:** [August 16, 2016, 3:29am UTC](https://forums.percona.com/t/percona-5-7-use-100-one-cpu-core-without-and-queries/5037 "2016-08-16T03:29:29Z") **Posts on this page:** 1 **Page:** 1
### Author: ![otaku](https://avatars.discourse-cdn.com/v4/letter/o/ce7236/32.png) [@otaku](https://forums.percona.com/u/otaku) #### Post date: [August 16, 2016, 3:29am UTC](https://forums.percona.com/t/percona-5-7-use-100-one-cpu-core-without-and-queries/5037/1 "2016-08-16T03:29:29Z")
I run latest percona 5.7 from official repo on ubuntu 16.04 . I have same problem on 2 servers. Mysql dont have any queries in queue, iotop dont show any disk io, service mysql restart dont help. mysql\> show processlist; ±—±-----±----------±-----±--------±-----±---------±-----------------±----------±--------------+ | Id | User | Host | db | Command | Time | State | Info | Rows\_sent | Rows\_examined | ±—±-----±----------±-----±--------±-----±---------±-----------------±----------±--------------+ | 4 | root | localhost | NULL | Query | 0 | starting | show processlist | 0 | 0 | ±—±-----±----------±-----±--------±-----±---------±-----------------±----------±--------------+ 1 row in set (0.00 sec) Htop [url][https://habrastorage.org/files/d50/2cd/b3f/d502cdb3f86e4e0588897bd8aefb61d7.png[/url]](https://habrastorage.org/files/d50/2cd/b3f/d502cdb3f86e4e0588897bd8aefb61d7.png%5B/url%5D) Top [url][https://habrastorage.org/files/5de/bf8/e3f/5debf8e3f9304850b4792e786f42f377.png[/url]](https://habrastorage.org/files/5de/bf8/e3f/5debf8e3f9304850b4792e786f42f377.png%5B/url%5D) Iotop [url][https://habrastorage.org/files/282/937/eb1/282937eb17854522a79c8ae4c648b000.png[/url]](https://habrastorage.org/files/282/937/eb1/282937eb17854522a79c8ae4c648b000.png%5B/url%5D) strace -p 32183 strace: Process 32183 attached strace: [Process PID=32183 runs in x32 mode.] strace: [Process PID=32183 runs in 64 bit mode.] futex(0x2f3deec, FUTEX\_CMP\_REQUEUE\_PRIVATE, 1, 2147483647, 0x2f3dec0, 6888) = 1 futex(0x2f3dec0, FUTEX\_WAKE\_PRIVATE, 1) = 1 futex(0x2f3deec, FUTEX\_CMP\_REQUEUE\_PRIVATE, 1, 2147483647, 0x2f3dec0, 6890) = 1 futex(0x2f3dec0, FUTEX\_WAKE\_PRIVATE, 1) = 1 futex(0x2f3deec, FUTEX\_CMP\_REQUEUE\_PRIVATE, 1, 2147483647, 0x2f3dec0, 6892) = 1 futex(0x2f3dec0, FUTEX\_WAKE\_PRIVATE, 1) = 1 futex(0x2f3deec, FUTEX\_CMP\_REQUEUE\_PRIVATE, 1, 2147483647, 0x2f3dec0, 6894) = 1 futex(0x2f3dec0, FUTEX\_WAKE\_PRIVATE, 1) = 1 futex(0x2f3deec, FUTEX\_CMP\_REQUEUE\_PRIVATE, 1, 2147483647, 0x2f3dec0, 6896) = 1 futex(0x2f3dec0, FUTEX\_WAKE\_PRIVATE, 1) = 1 futex(0x2f3deec, FUTEX\_CMP\_REQUEUE\_PRIVATE, 1, 2147483647, 0x2f3dec0, 6898) = 1 futex(0x2f3dec0, FUTEX\_WAKE\_PRIVATE, 1) = 1