Difference between revisions of "Different kernel flavors (UP, SMP, ENTERPRISE, ENTNOSPLIT)"
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OpenVZ project releases several different precompiled kernels for each version. Which kernel to choose depends on what hardware do you have. The table below describes the cases when it is better to use each of these kernels. | OpenVZ project releases several different precompiled kernels for each version. Which kernel to choose depends on what hardware do you have. The table below describes the cases when it is better to use each of these kernels. | ||
| − | {| | + | {| class="wikitable" |
| − | |+ Kernel flavors list | + | |+'''Kernel flavors list''' |
| − | ! Kernel type !! Hardware !! Use case | + | ! Kernel type !! Description !! Hardware !! Use case |
|- | |- | ||
| − | ! UP | + | ! UP |
| − | | up to 4GB of RAM | | + | | uniprocessor |
| + | | up to 4GB of RAM | ||
| + | | | ||
|- | |- | ||
| − | ! SMP | + | ! SMP |
| + | | symmetric multiprocessor | ||
| up to 4 GB of RAM | | up to 4 GB of RAM | ||
| 10-20 VPSs | | 10-20 VPSs | ||
|- | |- | ||
| − | ! entnosplit | + | ! entnosplit |
| + | | SMP + PAE support | ||
| up to 64 GB of RAM | | up to 64 GB of RAM | ||
| 10-30 VPSs | | 10-30 VPSs | ||
|- | |- | ||
| − | ! enterprise | + | ! enterprise |
| + | | SMP + PAE support + 4/4GB split | ||
| up to 64 GB of RAM | | up to 64 GB of RAM | ||
| >20-30 VPSs | | >20-30 VPSs | ||
Revision as of 13:16, 1 June 2006
OpenVZ project releases several different precompiled kernels for each version. Which kernel to choose depends on what hardware do you have. The table below describes the cases when it is better to use each of these kernels.
| Kernel type | Description | 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 help to boost performance by about 5 to 15 per cent.
|
Note: 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. |
