Slow performance on Centos 7

General support questions
grimmjow_sms
Posts: 1
Joined: 2018/02/03 18:07:00

Slow performance on Centos 7

Postby grimmjow_sms » 2018/02/03 18:25:18

Hi all..

Since quite a bit I noticed that centos 7 takes too much to load for a Linux system. I have a Dell Inspiron 14 and I only have Centos 7 installed. It was never that much fast since the installation of Centos, but nowadays it just gets more slow. Even after the system finally loads it keeps being slow, If i open a terminal, it takes some time before I get the prompt to be able to write. Firefox also has this issue, opening a chat window in FB or changing from one chat to another in whatsapp web, even changing from one tab to another takes some time. Let me show you all the details of my system. I hope someone can help me with this

The disk filesystem is like this:

$ df -h
S.ficheros Tamaño Usados Disp Uso% Montado en
/dev/mapper/centos-root 50G 8.1G 42G 17% /
devtmpfs 1.8G 0 1.8G 0% /dev
tmpfs 1.9G 45M 1.8G 3% /dev/shm
tmpfs 1.9G 17M 1.8G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda2 1014M 396M 619M 40% /boot
/dev/sda1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home 411G 76G 336G 19% /home
tmpfs 371M 48K 371M 1% /run/user/1000

This is what the system loads at start:

@localhost ~]$ systemd-analyze blame
13.265s plymouth-quit-wait.service
11.597s NetworkManager-wait-online.service
11.328s home.mount
9.825s jenkins.service
9.411s kdump.service
8.001s lvm2-monitor.service
7.601s mariadb.service
7.364s dev-mapper-centos\x2droot.device
7.018s systemd-udev-settle.service
2.726s systemd-udevd.service
2.046s rsyslog.service
2.010s nginx.service
1.960s lvm2-pvscan@8:3.service
1.939s firewalld.service
1.686s proc-fs-nfsd.mount
1.516s NetworkManager.service
1.383s network.service
1.315s systemd-binfmt.service
1.289s bluetooth.service
1.110s chronyd.service
1.038s systemd-tmpfiles-setup-dev.service
863ms dev-mqueue.mount
859ms sys-kernel-debug.mount
lines 1-23...skipping...
13.265s plymouth-quit-wait.service
11.597s NetworkManager-wait-online.service
11.328s home.mount
9.825s jenkins.service
9.411s kdump.service
8.001s lvm2-monitor.service
7.601s mariadb.service
7.364s dev-mapper-centos\x2droot.device
7.018s systemd-udev-settle.service
2.726s systemd-udevd.service
2.046s rsyslog.service
2.010s nginx.service
1.960s lvm2-pvscan@8:3.service
1.939s firewalld.service
1.686s proc-fs-nfsd.mount
1.516s NetworkManager.service
1.383s network.service
1.315s systemd-binfmt.service
1.289s bluetooth.service
1.110s chronyd.service
1.038s systemd-tmpfiles-setup-dev.service
863ms dev-mqueue.mount
859ms sys-kernel-debug.mount
854ms proc-sys-fs-binfmt_misc.mount
849ms dev-hugepages.mount
764ms udisks2.service
753ms systemd-remount-fs.service
710ms rtkit-daemon.service
696ms rhel-readonly.service
658ms boot.mount
634ms systemd-tmpfiles-setup.service
622ms systemd-sysctl.service
591ms gssproxy.service
547ms upower.service

I saw in another post that there might be an issue with some of the things that the system loads at the begging and that the user should deactivate, but I dont know which one is causing the issues, and I dont have any idea on what to change and where.

If there is another kind of detail that you want me to share, please let me know.


Thank you all for your time and assistance.