Greens247 is using LVE; a lightweight and transparent technology that is similar to container based virtualization. The goal of LVE is to make sure that no single web site can bring down the web server. The kernel makes sure that all LVEs get a fair share of the server's resources, and that no customer can use more then the limits set for his account.
Each LVE limits the amount of entry processes (Apache processes entering into LVE) to prevent single site exhausting all Apache processes. If the limit is reached, then mod_hostinglimits will not be able to place Apache process into LVE, and will return error code 508. This way a very heavy site would slow down and start returning 508 errors, without affecting other users. If the site is limited by CPU or IO, then the site will start responding slower. If the site is limited by memory or number of processes limits, then the user will receive 500 or 503 errors that server cannot execute the script.
Default cPanel Account Limits:
SPEED=100%
PMEM=1GB
IO=1024KB/s
IOPS=1024
NPROC=100
EP=20
SPEED:
CPU speed limit, relative to a single core. 100% means 1 core, 200% means 2 cores.
PMEM:
Physical memory limit (RSS field in ps/RES in top). Also includes shared memory and disk cache.
IO:
IO throughput - combines both read & write operations.
IOPS:
Restricts total number of read/write operations per second.
NPROC:
Max number of processes within LVE.
EP:
Limit on entry processes. Usually represents max number of concurrent connections to apache dynamic scripts as well as SSH and cron jobs running simultaneously.
Enable Reseller Limits:
If you would like to be able to set the limits for your cPanel accounts, this is possible. The reseller will technically be able to assign his/her cPanel end-users limits higher than his Reseller limits. However, it won’t be possible for the end-users to go over the reseller's limits no matter what the cPanel account limit is.
To enable reseller limits, simply start a customer support ticket and ask for the support to enable this advanced feature. Do not set individual accounts to be lower than the default resource limits. This can slow down your resources and cause stability and performance issues to your reseller account and end users.
