# hugepages_settings.sh # # Linux bash script to compute values for the # recommended HugePages/HugeTLB configuration # # Note: This script does calculation for all shared memory # segments available when the script is run, no matter it # is an Oracle RDBMS shared memory segment or not. ...
# hugepages_settings.sh # # Linux bash script to compute values for the # recommended HugePages/HugeTLB configuration # # Note: This script does calculation for all shared memory # segments available when the script is run, no matter it # is an Oracle RDBMS shared memory segment or not. ...
剩余 HugePages 的最大数量由 /proc/sys/vm/nr_overcommit_hugepages 控制。此值为0的情况很常见 Hugepagesize: 页面大小 HugePages_Free – HugePages_Rsvd 这部分是没有被使用到的内存,如果没有其他的oracle instance,这部分内存也许永远都不会被使用到,也就是被浪费了。 HugePages_Total-HugePages_Free+Huge...
Hugepagesize: 2048 kB从上面输出可以看到,每个页的大小为 2MB(Hugepagesize),并且系统中目前有 0 个“大内存页”(HugePages_Total)。这里“大内存页”的大小可以从 2MB 增加到 1GB。运行下面的脚本可以知道系统当前需要多少个巨大页。该脚本取之于 Oracle。#!/bin/bash hugepages_settings.sh Linux bash scrip...
---hugepages_settings.sh--- #!/bin/bash # # hugepages_settings.sh # # Linux bash script to compute values for the # recommended HugePages/HugeTLB configuration # # Note: This script does calculation for all shared memory # segments available when the script is run, no matter it ...
vi hugepages_settings.sh #!/bin/bash # # hugepages_settings.sh # # Linux bash script to compute values for the # recommended HugePages/HugeTLB configuration # # Note: This script does calculation for all shared memory # segments available when the script is run, no matter it ...
HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 Hugepagesize: 4096 kB 注意两个问题:一个是当前我们在meminfo中没有启用HugePage,所以没有对应的记录。另一个是AMM下,ipcs –m显示出的共享内存大小只有三个每个大小4096bytes。 这个问题是比较复杂的,本篇就介绍一个开头。在10g中,Oracle引入了sga...
the recommended HugePages/HugeTLB configuration for the current shared memory segments on Oracle Linux. Before proceeding with the execution please note following: * For ASM instance, it needs to configure ASMM instead of AMM. * The 'pga_aggregate_target' is outside the SGA and ...
This feature in the Linux kernel enables the Oracle Database to be able to allocate hugepages for the sublevels of the SGA on-demand. The same behaviour is expected for various Oracle Database versions that are certified on EL5. HugePages and Oracle 11g Automatic Memory Management (AMM) ...
运行MOS 401749.1提供的hugepages_settings.sh脚本,直接可以得到建议值。 hugepages_settings.sh脚本内容: #!/bin/bash # # hugepages_settings.sh # # Linux bash script to compute values for the # recommended HugePages/HugeTLB configuration # on Oracle Linux ...