Author Topic: Unexpected use of Ram and I/O (Read 3275 times)

addgab · « **on:** February 27, 2022, 02:20:43 AM »

Server Configuration:

CPU Model: AMD EPYC 7282 16-Core Processor
CPU Details: 6 Core (2795 MHz)
Distro Name: CentOS Stream release 8
Kernel Version: 4.18.0-365.el8.x86_64
Apache version: Apache/2.4.52
PHP version: 7.4.27 Forced PHP-FPM: 7.4
MySQL version: 10.7.3-MariaDB
FTP version: 1.0.49
Web Servers: nginx-apache
SSD : 400 GB
Ram: 16 GB

i already used cpanel, plesk, directadmin, and many more

Now i booked new server along with CWP Pro and i found it very interesting and getting many features at affordable price

but every thing is waste when your website goes down again n again

I was never facing this type issue with cpanel,plesk and other but this time it's a headace for me

please anyone here who can help me into this

Thank you so much

Sandeep · « **Reply #1 on:** February 27, 2022, 02:48:49 AM »

Hi what is your DISK write speed ?

addgab · « **Reply #2 on:** February 27, 2022, 03:45:19 AM »

I run this command: dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync

i hope it will help you to understand

[root@my ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 6.32158 s, 170 MB/s
[root@my ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 5.93834 s, 181 MB/s
[root@my ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 6.02479 s, 178 MB/s
[root@my ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 5.95614 s, 180 MB/s
[root@my ~]# dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
16384+0 records in
16384+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 6.01341 s, 179 MB/s
[root@my ~]#

rcschaff · « **Reply #3 on:** February 27, 2022, 06:06:07 AM »

Please post the output from " top " and " iotop " (May need to be installed via yum)

addgab · « **Reply #4 on:** February 27, 2022, 08:38:31 AM »

Top Result,

top Stats (live load)
top - 14:06:44 up 22:55, 0 users, load average: 0.09, 0.48, 0.57
Tasks: 173 total, 1 running, 172 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 15826.9 total, 8667.2 free, 5487.7 used, 1671.9 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 9829.8 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
93590 root 20 0 62352 4052 3484 R 6.7 0.0 0:00.01 top -n1+
1 root 20 0 238148 10928 8024 S 0.0 0.1 0:17.97 /usr/li+
2 root 20 0 0 0 0 S 0.0 0.0 0:00.33 [kthrea+
3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [rcu_gp]
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [rcu_pa+
6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kworke+
9 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [mm_per+
10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [rcu_ta+
11 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [rcu_ta+
12 root 20 0 0 0 0 S 0.0 0.0 0:01.75 [ksofti+
13 root 20 0 0 0 0 I 0.0 0.0 1:14.69 [rcu_sc+
14 root rt 0 0 0 0 S 0.0 0.0 0:00.09 [migrat+
15 root rt 0 0 0 0 S 0.0 0.0 0:00.23 [watchd+
16 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [cpuhp/+
17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [cpuhp/+
18 root rt 0 0 0 0 S 0.0 0.0 0:00.26 [watchd+
19 root rt 0 0 0 0 S 0.0 0.0 0:00.27 [migrat+
20 root 20 0 0 0 0 S 0.0 0.0 0:02.62 [ksofti+
22 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kworke+
23 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [cpuhp/+
24 root rt 0 0 0 0 S 0.0 0.0 0:00.19 [watchd+
25 root rt 0 0 0 0 S 0.0 0.0 0:00.38 [migrat+
26 root 20 0 0 0 0 S 0.0 0.0 0:03.02 [ksofti+
28 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kworke+
29 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [cpuhp/+
30 root rt 0 0 0 0 S 0.0 0.0 0:00.26 [watchd+
31 root rt 0 0 0 0 S 0.0 0.0 0:00.12 [migrat+
32 root 20 0 0 0 0 S 0.0 0.0 0:01.82 [ksofti+
34 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kworke+
35 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [cpuhp/+
36 root rt 0 0 0 0 S 0.0 0.0 0:00.26 [watchd+
37 root rt 0 0 0 0 S 0.0 0.0 0:00.31 [migrat+
38 root 20 0 0 0 0 S 0.0 0.0 0:01.51 [ksofti+
40 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kworke+
41 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [cpuhp/+
42 root rt 0 0 0 0 S 0.0 0.0 0:00.27 [watchd+
43 root rt 0 0 0 0 S 0.0 0.0 0:00.39 [migrat+
44 root 20 0 0 0 0 S 0.0 0.0 0:01.07 [ksofti+
46 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kworke+
53 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [kdevtm+
54 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [netns]
55 root 20 0 0 0 0 S 0.0 0.0 0:00.06 [kaudit+
57 root 20 0 0 0 0 S 0.0 0.0 0:00.27 [khungt+
58 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [oom_re+
59 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [writeb+
60 root 20 0 0 0 0 S 0.0 0.0 0:05.52 [kcompa+
61 root 25 5 0 0 0 S 0.0 0.0 0:00.00 [ksmd]
62 root 39 19 0 0 0 S 0.0 0.0 2:19.92 [khugep+
63 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [crypto]
64 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kinteg+
65 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kblock+
66 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [blkcg_+
67 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [tpm_de+
68 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [md]
69 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [edac-p+
70 root rt 0 0 0 0 S 0.0 0.0 0:00.00 [watchd+
72 root 0 -20 0 0 0 I 0.0 0.0 0:00.67 [kworke+
114 root 20 0 0 0 0 S 0.0 0.0 0:25.29 [kswapd+
216 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kthrot+
217 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [acpi_t+
218 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kmpath+
219 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kaluad]
221 root 0 -20 0 0 0 I 0.0 0.0 0:00.86 [kworke+
222 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [ipv6_a+
223 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [kstrp]
303 root 0 -20 0 0 0 I 0.0 0.0 0:01.33 [kworke+
309 root 0 -20 0 0 0 I 0.0 0.0 0:00.66 [kworke+
336 root 0 -20 0 0 0 I 0.0 0.0 0:01.06 [kworke+
339 root 0 -20 0 0 0 I 0.0 0.0 0:01.00 [kworke+
482 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [scsi_e+
483 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [scsi_t+
486 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [ata_sf+
488 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [scsi_e+
489 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [scsi_t+
490 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [scsi_e+
491 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [scsi_t+
524 root 20 0 0 0 0 S 0.0 0.0 0:10.19 [jbd2/s+
525 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [ext4-r+
616 root 20 0 188448 93028 89316 S 0.0 0.6 0:49.49 /usr/li+
653 root 20 0 115800 9704 7084 S 0.0 0.1 0:01.23 /usr/li+
654 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [jbd2/s+
655 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [ext4-r+
694 root 16 -4 65796 2540 1888 S 0.0 0.0 0:00.44 /sbin/a+
733 root 20 0 0 0 0 S 0.0 0.0 0:00.00 [hwmon0]
750 root 20 0 124964 5404 4768 S 0.0 0.0 0:04.50 /usr/sb+
751 root 20 0 192688 11040 9328 S 0.0 0.1 0:02.32 /usr/sb+
754 polkitd 20 0 1900440 21856 15560 S 0.0 0.1 0:03.08 /usr/li+
755 dbus 20 0 76744 5396 4620 S 0.0 0.0 0:06.21 /usr/bi+
756 root 20 0 391692 18392 15952 S 0.0 0.1 0:12.76 /usr/sb+
762 chrony 20 0 151004 4696 3980 S 0.0 0.0 0:00.90 /usr/sb+
784 root 20 0 222224 109100 8556 S 0.0 0.7 0:15.66 /usr/bi+
785 root 20 0 470988 37364 29196 S 0.0 0.2 0:07.15 php-fpm+
793 root 20 0 455564 51760 44276 S 0.0 0.3 0:05.99 php-fpm+
797 root 20 0 133760 22196 16724 S 0.0 0.1 0:09.08 php-fpm+
799 cbpolic+ 20 0 123272 36312 5004 S 0.0 0.2 0:02.85 /usr/bi+
800 root 20 0 133504 20464 15016 S 0.0 0.1 0:09.14 php-fpm+
801 root 20 0 94368 7128 6216 S 0.0 0.0 0:00.01 /usr/sb+
803 root 20 0 575968 31740 15164 S 0.0 0.2 4:48.15 /usr/li+
808 root 20 0 469132 39108 31068 S 0.0 0.2 0:22.35 php-fpm+
814 root 20 0 201820 12968 10084 S 0.0 0.1 0:01.57 /usr/li+
834 root 20 0 82328 4992 3888 S 0.0 0.0 0:00.05 /usr/sb+
841 root 20 0 202860 37892 36372 S 0.0 0.2 0:20.38 /usr/li+
845 mysql 20 0 4109060 1.5g 25176 S 0.0 9.9 29:21.82 /usr/sb+
852 root 20 0 92492 7524 6564 S 0.0 0.0 0:01.02 /usr/li+
859 root 20 0 34680 3288 2384 S 0.0 0.0 0:00.48 /usr/sb+
861 root 20 0 43876 2552 2344 S 0.0 0.0 0:00.02 /usr/sb+
891 root 20 0 298440 38164 36368 S 0.0 0.2 0:19.82 /usr/sb+
892 root 20 0 125296 6144 5080 S 0.0 0.0 0:18.54 /usr/bi+
924 root 20 0 13660 1668 1556 S 0.0 0.0 0:00.00 /sbin/a+
977 named 20 0 770332 308992 6908 S 0.0 1.9 0:54.06 /usr/sb+
988 root 20 0 44668 5308 4676 S 0.0 0.0 0:04.29 /usr/sb+
1075 amavis 20 0 1586812 1.2g 11248 S 0.0 8.1 0:19.40 /usr/sb+
1112 opendkim 20 0 97144 1572 0 S 0.0 0.0 0:00.00 /usr/sb+
1113 opendkim 20 0 263388 9768 5792 S 0.0 0.1 0:03.21 /usr/sb+
1162 root 20 0 123364 5424 4356 S 0.0 0.0 0:01.67 /usr/li+
1175 dovecot 20 0 22480 4352 3824 S 0.0 0.0 0:01.21 dovecot+
1176 root 20 0 22616 4388 3732 S 0.0 0.0 0:00.99 dovecot+
1178 root 20 0 48528 9724 4580 S 0.0 0.1 0:03.51 dovecot+
1231 root 20 0 125136 67944 4952 S 0.0 0.4 0:04.04 nginx: +
1727 root 20 0 222224 102268 1652 S 0.0 0.6 0:00.82 spamd c+
1728 root 20 0 222224 102016 1396 S 0.0 0.6 0:00.78 spamd c+
1808 dovecot 20 0 28744 5720 4816 S 0.0 0.0 0:02.58 dovecot+
2128 amavis 20 0 315840 152856 8168 S 0.0 0.9 0:03.57 /usr/sb+
2130 amavis 20 0 318168 152804 7236 S 0.0 0.9 0:00.34 /usr/sb+
2131 amavis 20 0 317352 148828 4036 S 0.0 0.9 0:00.00 /usr/sb+
2482 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 [dio/sd+
28596 cbpolic+ 20 0 138452 38780 6344 S 0.0 0.2 0:00.15 /usr/bi+
31397 root 20 0 36608 8776 1468 S 0.0 0.1 0:16.12 /usr/sb+
32499 cbpolic+ 20 0 138576 39412 6924 S 0.0 0.2 0:00.39 /usr/bi+
36501 cbpolic+ 20 0 138448 38820 6388 S 0.0 0.2 0:00.06 /usr/bi+
36687 cbpolic+ 20 0 138572 39012 6524 S 0.0 0.2 0:00.21 /usr/bi+
47448 root 20 0 37656 8336 4200 S 0.0 0.1 0:00.03 cwpsrv:+
48114 root 20 0 358732 186008 11328 S 0.0 1.1 0:09.81 /usr/lo+
50356 root 20 0 100020 34264 5364 S 0.0 0.2 0:46.85 lfd - s+
57430 root 20 0 69688 10372 6116 S 0.0 0.1 0:03.85 cwpsrv:+
57431 root 20 0 69688 10372 6116 S 0.0 0.1 0:03.58 cwpsrv:+
81228 postfix 20 0 148796 10140 8988 S 0.0 0.1 0:00.06 qmgr -l+
82833 nobody 20 0 159292 66884 3768 S 0.0 0.4 0:00.00 nginx: +
82834 nobody 20 0 159292 66736 3620 S 0.0 0.4 0:00.00 nginx: +
82835 nobody 20 0 159292 66884 3768 S 0.0 0.4 0:00.00 nginx: +
82836 nobody 20 0 159292 70324 7208 S 0.0 0.4 0:16.25 nginx: +
82837 nobody 20 0 159292 69984 6868 S 0.0 0.4 0:00.66 nginx: +
82838 nobody 20 0 159292 66884 3768 S 0.0 0.4 0:00.00 nginx: +
82839 nobody 20 0 159292 66708 3592 S 0.0 0.4 0:00.12 nginx: +
82850 nobody 20 0 2379244 225428 8916 S 0.0 1.4 0:09.99 /usr/lo+
82851 nobody 20 0 2379244 224160 8916 S 0.0 1.4 0:12.84 /usr/lo+
82876 nobody 20 0 2379244 226940 8916 S 0.0 1.4 0:13.08 /usr/lo+
84116 root 20 0 0 0 0 I 0.0 0.0 0:00.31 [kworke+
86456 postfix 20 0 148700 11112 10000 S 0.0 0.1 0:00.05 tlsmgr +
86851 postfix 20 0 148668 9456 8368 S 0.0 0.1 0:00.03 anvil -+
88238 root 20 0 0 0 0 I 0.0 0.0 0:00.26 [kworke+
89015 postfix 20 0 148672 9508 8420 S 0.0 0.1 0:00.02 pickup +
89345 root 20 0 0 0 0 I 0.0 0.0 0:00.17 [kworke+
89416 root 20 0 0 0 0 I 0.0 0.0 0:00.29 [kworke+
89928 root 20 0 0 0 0 I 0.0 0.0 0:00.37 [kworke+
90493 root 20 0 0 0 0 I 0.0 0.0 0:00.29 [kworke+
90583 root 20 0 0 0 0 I 0.0 0.0 0:00.07 [kworke+
90595 root 20 0 0 0 0 I 0.0 0.0 0:00.00 [kworke+
90596 root 20 0 0 0 0 I 0.0 0.0 0:00.66 [kworke+
90963 root 20 0 0 0 0 I 0.0 0.0 0:00.05 [kworke+
91475 dovenull 20 0 27168 6868 6048 S 0.0 0.0 0:00.00 dovecot+
91476 web92j2x 20 0 32876 6712 5876 S 0.0 0.0 0:00.00 dovecot+
91635 root 20 0 0 0 0 I 0.0 0.0 0:00.00 [kworke+
91637 root 20 0 0 0 0 I 0.0 0.0 0:00.00 [kworke+
91871 root 20 0 136256 17056 8912 S 0.0 0.1 0:02.65 php-fpm+
91873 root 20 0 136256 17056 8912 S 0.0 0.1 0:02.69 php-fpm+
92605 root 20 0 136256 16660 8520 S 0.0 0.1 0:01.22 php-fpm+
92626 root 20 0 0 0 0 I 0.0 0.0 0:00.11 [kworke+
92654 root 20 0 0 0 0 I 0.0 0.0 0:00.00 [kworke+
92971 root 20 0 0 0 0 I 0.0 0.0 0:00.00 [kworke+
92973 root 20 0 0 0 0 I 0.0 0.0 0:00.00 [kworke+
93487 dovecot 20 0 51008 6352 5632 S 0.0 0.0 0:00.00 dovecot+
93501 root 20 0 53408 7864 6888 S 0.0 0.0 0:00.02 dovecot+

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Author Topic: Unexpected use of Ram and I/O (Read 3275 times)

Unexpected use of Ram and I/O

Re: Unexpected use of Ram and I/O

Re: Unexpected use of Ram and I/O

Re: Unexpected use of Ram and I/O

Re: Unexpected use of Ram and I/O