Performans analizlerini kısa tutmak makbuldür. Genelde uzun uzun yaptığımızda hem bize vakit açısından zararlıdır. Hemde müşteriyi bekletmiş oluruz. Tabii bu beklemenin yarısı metrikleri toplamak olmamalı, topladığımız metriği analiz etmek olmalı diye düşündüğüm için 60 saniyede linux sunucularda nasıl performans analizi yapabileceğinizi göstereceğim.
Aşağıdaki testlerin bazılarını yapmak için sisteminizde sysstat paketinin yüklü olması gerekmektedir.
Yük ortalamalarının kontrol edilmesi
root@debian:~# uptime
01:06:02 up 4 min, 2 users, load average: 0.97, 0.59, 0.25Kernel hataları
root@debian:~# dmesg | tail
[ 160.796031] raid6: sse2x4 gen() 14491 MB/s
[ 160.864148] raid6: sse2x4 xor() 9278 MB/s
[ 160.932032] raid6: avx2x1 gen() 18534 MB/s
[ 161.000062] raid6: avx2x2 gen() 22065 MB/s
[ 161.068124] raid6: avx2x4 gen() 23742 MB/s
[ 161.068126] raid6: using algorithm avx2x4 gen() 23742 MB/s
[ 161.068127] raid6: using avx2x2 recovery algorithm
[ 161.209432] xor: automatically using best checksumming function avx
[ 161.264459] Btrfs loaded, crc32c=crc32c-intel
[ 161.275961] fuse init (API version 7.26)Zamana göre genel istatistikler
root@debian:~# vmstat 1
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 0 1309960 31768 500396 0 0 697 1502 21 941 6 3 66 25 0
0 0 0 1309952 31768 500392 0 0 0 0 21 31 0 0 100 0 0
0 0 0 1309952 31768 500392 0 0 0 0 18 29 0 0 100 0 0
0 0 0 1309952 31776 500392 0 0 0 12 20 73 0 0 90 10 0
0 0 0 1309952 31776 500392 0 0 0 0 18 26 0 0 100 0 0
0 0 0 1309952 31776 500388 0 0 0 0 20 28 0 0 100 0 0
0 0 0 1309952 31776 500388 0 0 0 0 19 30 0 0 100 0 0İşlemci ortalamaları
root@debian:~# mpstat -P ALL 1
Linux 4.9.0-7-amd64 (debian) 11/08/2018 _x86_64_ (1 CPU)
01:10:42 AM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
01:10:43 AM all 0.00 0.00 0.00 7.00 0.00 0.00 0.00 0.00 0.00 93.00
01:10:43 AM 0 0.00 0.00 0.00 7.00 0.00 0.00 0.00 0.00 0.00 93.00
01:10:43 AM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
01:10:44 AM all 0.00 0.00 0.00 7.00 0.00 0.00 0.00 0.00 0.00 93.00
01:10:44 AM 0 0.00 0.00 0.00 7.00 0.00 0.00 0.00 0.00 0.00 93.00
01:10:44 AM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
01:10:45 AM all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00
01:10:45 AM 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00Süreçlerin CPU kullanımı
root@debian:~# pidstat 1
Linux 4.9.0-7-amd64 (debian) 11/08/2018 _x86_64_ (1 CPU)
01:11:30 AM UID PID %usr %system %guest %CPU CPU Command
01:11:31 AM UID PID %usr %system %guest %CPU CPU Command
01:11:32 AM 0 161 0.00 1.00 0.00 1.00 0 kworker/0:1H
01:11:32 AM UID PID %usr %system %guest %CPU CPU Command
01:11:33 AM UID PID %usr %system %guest %CPU CPU Command
01:11:34 AM 0 8802 0.00 1.01 0.00 1.01 0 pidstatDisk I/O kullanımı
root@debian:~# iostat -xz 1
Linux 4.9.0-7-amd64 (debian) 11/08/2018 _x86_64_ (1 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
3.17 0.00 1.92 15.41 0.00 79.49
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
sda 0.90 24.93 11.86 23.23 374.90 870.94 71.01 0.54 15.33 8.92 18.61 4.81 16.87
dm-0 0.00 0.00 7.04 34.66 153.15 426.88 27.82 0.53 12.75 18.96 11.49 2.62 10.91
dm-1 0.00 0.00 2.16 10.05 124.88 370.82 81.18 0.63 51.37 5.20 61.29 4.98 6.08
dm-2 0.00 0.00 0.18 0.00 3.74 0.00 40.63 0.00 7.44 7.44 0.00 7.30 0.13
dm-3 0.00 0.00 0.28 0.32 5.21 0.51 19.14 0.02 37.50 11.43 60.42 12.61 0.75
dm-4 0.00 0.00 0.26 0.02 5.25 0.06 37.51 0.00 16.34 15.85 22.00 12.81 0.36
avg-cpu: %user %nice %system %iowait %steal %idle
0.00 0.00 0.00 0.00 0.00 100.00
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
avg-cpu: %user %nice %system %iowait %steal %idle
0.00 0.00 0.00 7.00 0.00 93.00
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
sda 0.00 1.00 0.00 3.00 0.00 12.00 8.00 0.07 22.67 0.00 22.67 22.67 6.80
dm-1 0.00 0.00 0.00 3.00 0.00 12.00 8.00 0.07 22.67 0.00 22.67 22.67 6.80
avg-cpu: %user %nice %system %iowait %steal %idle
0.00 0.00 0.00 0.00 0.00 100.00
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
avg-cpu: %user %nice %system %iowait %steal %idle
0.00 0.00 0.00 0.00 0.00 100.00
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
avg-cpu: %user %nice %system %iowait %steal %idle
0.00 0.00 0.00 0.00 0.00 100.00
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %utilRam kullanımı
root@debian:~# free -m
total used free shared buff/cache available
Mem: 1921 122 1273 5 525 1643
Swap: 2043 0 2043Network I/O kullanımı
root@debian:~# sar -n DEV 1
Linux 4.9.0-7-amd64 (debian) 11/08/2018 _x86_64_ (1 CPU)
01:13:42 AM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil
01:13:43 AM eth0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:13:43 AM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:13:43 AM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil
01:13:44 AM eth0 1.00 2.00 0.05 0.71 0.00 0.00 0.00 0.00
01:13:44 AM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
01:13:44 AM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil
01:13:45 AM eth0 1.01 2.02 0.05 0.69 0.00 0.00 0.00 0.00
01:13:45 AM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00TCP Kullanımı
root@debian:~# sar -n TCP,ETCP 1
Linux 4.9.0-7-amd64 (debian) 11/08/2018 _x86_64_ (1 CPU)
01:15:01 AM active/s passive/s iseg/s oseg/s
01:15:02 AM 0.00 0.00 0.00 0.00
01:15:01 AM atmptf/s estres/s retrans/s isegerr/s orsts/s
01:15:02 AM 0.00 0.00 0.00 0.00 0.00
01:15:02 AM active/s passive/s iseg/s oseg/s
01:15:03 AM 0.00 0.00 1.01 2.02
01:15:02 AM atmptf/s estres/s retrans/s isegerr/s orsts/s
01:15:03 AM 0.00 0.00 0.00 0.00 0.00
01:15:03 AM active/s passive/s iseg/s oseg/s
01:15:04 AM 0.00 0.00 1.00 2.00
01:15:03 AM atmptf/s estres/s retrans/s isegerr/s orsts/s
01:15:04 AM 0.00 0.00 0.00 0.00 0.00
01:15:04 AM active/s passive/s iseg/s oseg/s
01:15:05 AM 0.00 0.00 1.00 2.00
01:15:04 AM atmptf/s estres/s retrans/s isegerr/s orsts/s
01:15:05 AM 0.00 0.00 0.00 0.00 0.00Genel kullanım
root@debian:~# top
top - 01:15:30 up 13 min, 2 users, load average: 0.00, 0.10, 0.13
Tasks: 104 total, 1 running, 103 sleeping, 0 stopped, 0 zombie
%Cpu(s): 2.5 us, 1.5 sy, 0.0 ni, 83.8 id, 12.3 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem : 1967800 total, 1303240 free, 126264 used, 538296 buff/cache
KiB Swap: 2093052 total, 2093052 free, 0 used. 1682356 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 20 0 57256 6956 5272 S 0.0 0.4 0:01.15 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.10 ksoftirqd/0
5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
7 root 20 0 0 0 0 S 0.0 0.0 0:00.09 rcu_sched
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
9 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
10 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 lru-add-drain
11 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
12 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/0
13 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdevtmpfs
14 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns
15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khungtaskd
16 root 20 0 0 0 0 S 0.0 0.0 0:00.00 oom_reaper
17 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 writeback
18 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kcompactd0
19 root 25 5 0 0 0 S 0.0 0.0 0:00.00 ksmd
21 root 39 19 0 0 0 S 0.0 0.0 0:00.00 khugepaged
22 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 crypto
23 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kintegrityd
24 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
25 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kblockd
26 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 devfreq_wq
27 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 watchdogd
28 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kswapd0
29 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 vmstat
41 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kthrotld
43 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 ipv6_addrconf
76 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 hv_vmbus_con
77 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 ata_sff
78 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
79 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
80 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
81 root 20 0 0 0 0 S 0.0 0.0 0:00.38 scsi_eh_0
82 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
83 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
84 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 scsi_tmf_0
85 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
86 root 20 0 0 0 0 S 0.0 0.0 0:00.43 scsi_eh_1
87 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 scsi_tmf_1
88 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
89 root 20 0 0 0 0 S 0.0 0.0 0:00.04 kworker/u256:1
90 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
92 root 20 0 0 0 0 S 0.0 0.0 0:00.03 kworker/u256:2
99 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_2
101 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 scsi_tmf_2
117 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
122 root 20 0 0 0 0 S 0.0 0.0 0:00.00 scsi_eh_3
123 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 scsi_tmf_3
157 root 20 0 0 0 0 S 0.0 0.0 0:00.72 kworker/0:3
159 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
161 root 0 -20 0 0 0 S 0.0 0.0 0:00.08 kworker/0:1H
167 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kdmflush
168 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
171 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kdmflush
172 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 biosetDisk Kullanımı
root@debian:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 950M 0 950M 0% /dev
tmpfs 193M 5.3M 187M 3% /run
/dev/mapper/debian--vg-root 3.8G 874M 2.7G 25% /
tmpfs 961M 0 961M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 961M 0 961M 0% /sys/fs/cgroup
/dev/mapper/debian--vg-var 1.6G 198M 1.3G 14% /var
/dev/mapper/debian--vg-tmp 337M 2.1M 313M 1% /tmp
/dev/sda1 236M 63M 162M 28% /boot
/dev/mapper/debian--vg-home 12G 41M 12G 1% /home
tmpfs 193M 0 193M 0% /run/user/0
tmpfs 193M 0 193M 0% /run/user/1000