私はiotopを使用していますが、これは私が得るものです
Total DISK READ : 0.00 B/s | Total DISK WRITE : 15.78 M/s
Actual DISK READ: 19.08 K/s | Actual DISK WRITE: 0.00 B/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
16583 be/4 nobody 0.00 B/s 3.82 K/s 0.00 % 0.00 % httpd -k start
16850 be/4 mysql 0.00 B/s 7.04 M/s 0.00 % 0.00 % mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --lo~te.com.err --open-files-limit=10000 --pid-file=/var/lib/mysql/host.hostgreatsite.com.pid
16317 be/4 nobody 0.00 B/s 3.82 K/s 0.00 % 0.00 % httpd -k start
16859 be/4 mysql 0.00 B/s 3.04 M/s 0.00 % 0.00 % mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --lo~te.com.err --open-files-limit=10000 --pid-file=/var/lib/mysql/host.hostgreatsite.com.pid
1024 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % NetworkManager --no-daemon [gdbus]
1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % systemd --switched-root --system --deserialize 21
2 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kthreadd]
3 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/0]
5124 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/u12:0]
5 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/0:0H]
518 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detect~ption: simd exception: iret exception: /var/log/messages -- /usr/bin/abrt-dump-oops -xtD
7 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/0]
8 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcu_bh]
9 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/0]
10 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/1]
11 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/2]
12 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/3]
13 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/4]
14 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuob/5]
15 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcu_sched]
16 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/0]
17 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/1]
18 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/2]
19 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/3]
20 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/4]
21 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcuos/5]
22 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/0]
23 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/1]
24 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/1]
25 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/1]
15898 be/4 nobody 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd -k start
27 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/1:0H]
28 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/2]
29 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/2]
30 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/2]
517 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % abrtd -d -s
32 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/2:0H]
33 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/3]
34 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/3]
35 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/3]
16420 be/4 nobody 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd -k start
37 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/3:0H]
38 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/4]
39 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/4]
40 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/4]
42 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/4:0H]
43 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/5]
44 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/5]
mysqlの問題のようです。
root@host [~]# iostat -xk 5
2016年12月5日_x86_64_（6 CPU）
avg-cpu: %user %nice %system %iowait %steal %idle
35.35 0.05 8.48 6.11 0.17 49.84
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
xvdap1 0.26 9.95 24.20 33.63 480.30 1125.98 55.55 7.50 129.63 102.41 149.22 5.55 32.08
xvdap2 0.21 0.83 0.04 0.21 0.99 4.18 41.88 0.00 18.50 10.36 19.88 3.67 0.09
xvdap3 0.16 21.65 16.33 19.33 90.31 230.11 17.97 0.57 15.87 10.18 20.68 1.63 5.82
xvdap4 0.01 0.06 1.26 0.13 15.21 3.25 26.67 0.03 20.28 17.04 52.31 3.19 0.44
avg-cpu: %user %nice %system %iowait %steal %idle
69.67 0.00 14.01 2.17 0.27 13.88
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
xvdap1 0.00 11.40 10.40 39.80 56.80 1005.60 42.33 4.84 96.41 47.13 109.28 4.16 20.86
xvdap2 0.00 3.60 0.00 2.20 0.00 23.20 21.09 0.01 2.27 0.00 2.27 1.73 0.38
xvdap3 0.00 0.00 0.60 0.00 2.40 0.00 8.00 0.00 0.67 0.67 0.00 0.67 0.04
xvdap4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
avg-cpu: %user %nice %system %iowait %steal %idle
60.56 0.00 13.50 1.07 0.23 24.63
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
xvdap1 0.00 10.60 1.00 147.80 8.80 6284.00 84.58 10.33 69.45 6.40 69.88 0.67 9.96
xvdap2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
xvdap3 0.00 0.00 1.00 0.00 32.80 0.00 65.60 0.02 15.80 15.80 0.00 5.00 0.50
xvdap4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
これは、最初のドライブxvdap1にのみ負荷が多いことを示しています。
これは正しい結論ですか？