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The version of a kernel you need depends on your server hardware.
The table below describes the cases when it is better to use each of these kernels:
{| border="1"
|+ Kernel flavors list
! Kernel type !! Hardware !! Use case
|-
! UP (uniprocessor)
| up to 4GB of RAM || -
|-
! SMP (symmetric multiprocessor)
| up to 4 GB of RAM
| 10-20 VPSs
|-
! entnosplit (SMP + PAE support)
| up to 64 GB of RAM
| 10-30 VPSs
|-
! enterprise (SMP + PAE support + 4/4GB split)
| up to 64 GB of RAM
| >20-30 VPSs
|}
These kernels are optimized for these types of hardware configurations and usage scenarios,
so choosing the right kernel can improve (or descrease) a performance for 5-15%.
Use 'rpm -ihv' command for ovzkernel RPM installation. Please do not use the "rpm -Uhv" command to install the kernel,
otherwise all the previously installed kernels may be removed from your system.
The table below describes the cases when it is better to use each of these kernels:
{| border="1"
|+ Kernel flavors list
! Kernel type !! Hardware !! Use case
|-
! UP (uniprocessor)
| up to 4GB of RAM || -
|-
! SMP (symmetric multiprocessor)
| up to 4 GB of RAM
| 10-20 VPSs
|-
! entnosplit (SMP + PAE support)
| up to 64 GB of RAM
| 10-30 VPSs
|-
! enterprise (SMP + PAE support + 4/4GB split)
| up to 64 GB of RAM
| >20-30 VPSs
|}
These kernels are optimized for these types of hardware configurations and usage scenarios,
so choosing the right kernel can improve (or descrease) a performance for 5-15%.
Use 'rpm -ihv' command for ovzkernel RPM installation. Please do not use the "rpm -Uhv" command to install the kernel,
otherwise all the previously installed kernels may be removed from your system.