The “rmmod" is used to remove the module from kernel.The module name which you wan to remove from the Kernel (excluding the .ko) is specified to identify the module. The kernel will not remove a module that is currently being used in the kernel (a non-zero use count), but a -w option can be specified to "rmmod" to instruct the kernel to remove it once the use-count has decreased to zero.
root@gunjan#rmmod your_module
If you don’t know anything about “lsmod” then please read it first
The “lsmod" command is basically used to check installed module with the kernel.To run "lsmod" command yo require root login details.After login into server run following command.
root@gunjan#lsmod
It will give all modules required with kernel.For example.
root@gunjan#lsmod
Module Size Used by
lockd 61257 0
ipt_owner 6081 4
nls_utf8 6209 0
hfsplus 75589 0
dm_raid45 66509 0
dm_message 6977 1 dm_raid45
dm_region_hash 15681 1 dm_raid45
dm_log 14529 3 dm_mirror,dm_raid45,dm_region_hash
dm_mod 62201 4 dm_mirror,dm_multipath,dm_raid45,dm_log
dm_mem_cache 9537 1 dm_raid45
ipt_REJECT 9537 0
As well as you can also read more on lsmod here
This form of hosting is also commonly referred to as a “Virtual Server” or “Bulk Hosting” server because you purchase a set number of domains hosting accounts, or a set amount of disk space and bandwidth, and can manage it yourself without assistance of an Administrator. This gives you most of the control you would have if you had your own “Dedicated Server” without the high setup fees, and ongoing costs of maintaining your own equipment.In short you can also call is as mini server.
A virtual private server or VPS is a method of partitioning one physical server (or dedicated server) into multiple servers that each has the appearance and capabilities of running on its own dedicated machine. Each virtual server can run its own full-fledged operating system, and each server can be independently rebooted.
Virtual private servers bridge the gap between shared web hosting services and dedicated hosting services, giving independence from other customers of the VPS service in software terms but at less cost than a physical dedicated server
A PHP accelerator is an extension is basically created to improve the performance of software applications using the PHP programming language.PHP accelerators work by caching and its compiled bytecode of PHP scripts to keep away from the transparency of parsing and compiling source code on each an every request.It gives best result, if caching is to basically shared memory with direct execution from the shared memory and the minimum of memory copying at runtime.A PHP accelerator typically reduces server load and increases the speed.
The list of PHP accelerators is as follows.
1) Alternative PHP Cache or APC
2) eAccelerator
3) XCache
4) Zend Optimizer
5) Zend Platform
