cpanel --json-fast-connect --stdin (HI IO usage)

Oleg.Gricik

Well-Known Member
Nov 2, 2011
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Hi

According to iotop cpanel --json-fast-connect --stdin causes hi io usage:
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Total DISK READ: 10.47 M/s | Total DISK WRITE: 7.43 M/s
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
10754 be/3 root 0.00 B/s 0.00 B/s -1454831702899.70 % 99.99 % [rpciod/9]
698437 be/4 smithbro 15.77 K/s 0.00 B/s 0.00 % 99.99 % php /home/smithbro/public_html/index.php
634882 be/4 mysql 22.08 K/s 66.25 K/s 0.00 % 99.99 % mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/server13.websitehostserver.net.pid --skip-external-locking
441103 be/4 mysql 479.51 K/s 0.00 B/s 0.00 % 99.99 % mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/server13.websitehostserver.net.pid --skip-external-locking
8480 be/0 root 25.24 K/s 0.00 B/s 0.00 % 99.99 % [loop0]
701084 be/4 receptiv 217.67 K/s 0.00 B/s 0.00 % 99.99 % php /home/receptiv/public_html/index.php
636971 be/4 mysql 649.86 K/s 0.00 B/s 0.00 % 99.36 % mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/server13.websitehostserver.net.pid --skip-external-locking
686874 be/4 mysql 1331.27 K/s 0.00 B/s 0.00 % 98.72 % mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/server13.websitehostserver.net.pid --skip-external-locking
701210 be/4 ponyapps 126.19 K/s 0.00 B/s 0.00 % 94.92 % php /home/ponyapps/public_html/ponypic.com/index.php
693079 be/4 mumsiesg 4.61 M/s 6.81 M/s 0.00 % 94.53 % cpanel --json-fast-connect --stdin
391410 be/4 centenni 110.41 K/s 6.31 K/s 0.00 % 93.71 % spamd child
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What is this?

Thank you.
Oleg
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,904
2,220
463
Hello :)

I suggest opening a support ticket so we can take a look in your server. The following URL can be used to open a support ticket:

Submit A Ticket

Thank you.
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,904
2,220
463
Long running JSON initiated processes appear in the process table. EX:

Code:
22410 ?        D      0:03 /usr/local/cpanel/cpanel --json-fast-connect --stdin
It's likely there is a third-party application installed on your system that uses API to interact with cPanel.

Thank you.
 

cPanelTristan

Quality Assurance Analyst
Staff member
Oct 2, 2010
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somewhere over the rainbow
cPanel Access Level
Root Administrator
If the process is still running, you can check the lsof on the process to see what it is doing:

Code:
lsof -p PID#
Where PID# is the PID number of the process.

You might also cat the environmental details provided there are any available:

Code:
cat /proc/PID#/environ
Again, replace PID# with the PID of the process.
 

Oleg.Gricik

Well-Known Member
Nov 2, 2011
62
0
56
cPanel Access Level
Root Administrator
Hi

=)
lsof -p will show me a list of libraries.
In most cases it shows / as the NAME.
Ok,no problem.
This process has disappeared.

Thank you for your updates.

Kind Regards
Oleg Gricik
 

Sannin

Active Member
May 19, 2011
34
0
56
Sorry for this thread necromancy.

I faced the same issue some days ago. The same process cause a huge IO wait in my server. In my case that process was created when a user tried to move 20 Gbs of data using cpanel' s file manager. I use cloudlinux but unfortunately it doesn' t limit cpanel processes.