Red Hat ENTERPRISE LINUX 5.1 - LINUX ORACLE Guida di Installazione Scaricare il pdf (Pagina 21)

Summary of Recommended Huge Pages & Shared Memory Settings

For 64-bit systems with 64GB of RAM:

kernel.shmmax=34359738368

kernel.shmmni=4096

kernel.shmall=16777216

vm.nr_hugepages=16384

For 64-bit systems with 32GB of RAM:

kernel.shmmax=17179869184

kernel.shmmni=4096

kernel.shmall=8388608

vm.nr_hugepages=8192

For 64-bit systems with 16GB of RAM:

kernel.shmmax=8589934592

kernel.shmmni=4096

kernel.shmall=4194304

vm.nr_hugepages=4096

For 64-bit systems with 8GB of RAM:

kernel.shmmax=4294967295

kernel.shmmni=4096

kernel.shmall=2097152

vm.nr_hugepages=2048

For systems with 4GB of RAM:

kernel.shmmax=2147483648

kernel.shmmni=4096

kernel.shmall=1048576

vm.nr_hugepages=1024

For systems with 1GB of RAM:

kernel.shmmax=536870912

kernel.shmmni=4096

kernel.shmall=262144

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Red Hat ENTERPRISE LINUX 5.1 - LINUX ORACLE Guida di Installazione Pagina 21