Product specifications

If the product is installed using kickstart, the following variables are set in /etc/sysctl.cfg:
Table 3:
Parameter RHEL for SAP HANA Remarks
net.ipv4.tcp_slow_start_after_idle 1 Default for RHEL*
net.ipv4.conf.all.rp_filter 0 Default for RHEL
net.ipv4.ip_local_port_range 40000 65300 Set by installer*
net.ipv4.neigh.default.gc_thresh{1,2,3} {128,512,1024} Default for RHEL**
net.ipv6.neigh.default.gc_thresh{1,2,3} {128,512,1024} Default for RHEL**
kernel.shmmax 68719476736 Default for RHEL**
kernel.shmall 4294967296 Default for RHEL**
kernel.shmmni 524288 Set by installer*
kernel.msgmni 32768 Default for RHEL**
kernel.sem 1250 256000 100 8192 Set by kickstart
vm.max_map_count 92500000 Set by installer*
vm.memory_failure_early_kill 1 Set by installer*
fs.file-max 20000000 Set by installer*
fs.aio-max-nr 131072 Set by installer*
* = see SAP HANA documentation
** = if set lower, the values must be increased to the ones above
The kickstart file inserts the following kernel parameter during %post: kernel.sem.
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P U B L I C
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Red Hat Enterprise Linux (RHEL) 6.5 Configuration Guide for SAP HANA
SAP HANA Installation