Load Average server tinggi dengan Low CPU dan Memory usage

Bismillah ,

kemarin saya sempat mengalami hal yang cukup aneh , server monitoring terus memberikan notif load server tinggi padah setelah di cek CPU usage dan memory usage nya kecil ,

[email protected]:/var/log/apache2# uptime
 14:52:53 up 10 days, 17:02,  1 user,  load average: 40.27, 52.51, 45.29

di cek denga perintah top dan htop , cpu dan memory usage nya low tidak signifikan, setelah coba browsing dan baca baca load average server juga di pengrui oleh disk i/o , maka saya cek disk nya barangkali penuh , saya gunakan perintah df -h dan barulah kelihatan ke anehan nya , server tidak merespon perintah df -h , baru saya ingan di server ada mounting nfs disk dan betul setelah di cek koneksi ke nfs server nya putus , load server tinggi krena dia mencoba mount ke nfs disk yang koneksi ke nfs server nya putus.

setelah koneksi di betul kan barulah mulai turun load nya :).

[email protected]:/var/log/apache2# df -h
Filesystem                                        Size  Used Avail Use% Mounted on
/dev/sda6                                         172G   72G   91G  45% /
none                                              4.0K     0  4.0K   0% /sys/fs/cgroup
udev                                               12G  4.0K   12G   1% /dev
tmpfs                                             2.3G  468K  2.3G   1% /run
none                                              5.0M     0  5.0M   0% /run/lock
none                                               12G     0   12G   0% /run/shm
none                                              100M     0  100M   0% /run/user
/dev/sda5                                         3.7G   75M  3.4G   3% /boot
/dev/sdb1                                         197G  126G   62G  68% /var/www
192.168.200.1:/volume1/backup-cloud/server-223.4  8.8T  1.3T  7.5T  15% /mnt/nfs-synology
[email protected]:/var/log/apache2# uptime
 14:52:53 up 10 days, 17:02,  1 user,  load average: 40.27, 52.51, 45.29
[email protected]:/var/log/apache2# uptime
 14:53:10 up 10 days, 17:03,  1 user,  load average: 28.84, 49.11, 44.32
[email protected]:/var/log/apache2# uptime
 14:53:15 up 10 days, 17:03,  1 user,  load average: 26.53, 48.29, 44.08
[email protected]:/var/log/apache2# uptime
 14:54:17 up 10 days, 17:04,  1 user,  load average: 9.84, 39.53, 41.33
[email protected]:/var/log/apache2# uptime
 14:55:51 up 10 days, 17:05,  1 user,  load average: 2.06, 28.78, 37.32
[email protected]:/var/log/apache2

semoga bermanfaat 😉

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