d01e045fbd
This profile is performance optimized for running SAP NetWeaver based applications on bare metal. Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
40 lines
1.2 KiB
Bash
Executable file
40 lines
1.2 KiB
Bash
Executable file
#!/bin/bash
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# SAP ktune script
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#
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# TODO: drop this script and implement native support
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# into plugins
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. /usr/lib/tuned/functions
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start() {
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# The following lines are for autodetection of SAP settings
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SAP_MAIN_MEMORY_TOTAL=`awk '/MemTotal:/ {print $2}' /proc/meminfo`
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SAP_SWAP_SPACE_TOTAL=`awk '/SwapTotal:/ {print $2}' /proc/meminfo`
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# Rounding to full Gigabytes
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SAP_VIRT_MEMORY_TOTAL=$(( ( $SAP_MAIN_MEMORY_TOTAL + $SAP_SWAP_SPACE_TOTAL + 1048576 ) / 1048576 ))
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# kernel.shmall is in 4 KB pages; minimum 20 GB (SAP Note 941735)
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SAP_SHMALL=$(( $SAP_VIRT_MEMORY_TOTAL * 1024 * 1024 / 4 ))
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# kernel.shmmax is in Bytes; minimum 20 GB (SAP Note 941735)
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SAP_SHMMAX=$(( $SAP_VIRT_MEMORY_TOTAL * 1024 * 1024 * 1024 ))
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CURR_SHMALL=`sysctl -n kernel.shmall`
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CURR_SHMMAX=`sysctl -n kernel.shmmax`
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save_value kernel.shmall "$CURR_SHMALL"
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save_value kernel.shmmax "$CURR_SHMMAX"
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(( $SAP_SHMALL > $CURR_SHMALL )) && sysctl -w kernel.shmall="$SAP_SHMALL"
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(( $SAP_SHMMAX > $CURR_SHMMAX )) && sysctl -w kernel.shmmax="$SAP_SHMMAX"
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return 0
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}
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stop() {
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SHMALL=`restore_value kernel.shmall`
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SHMMAX=`restore_value kernel.shmmax`
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[ "$SHMALL" ] && sysctl -w kernel.shmall="$SHMALL"
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[ "$SHMMAX" ] && sysctl -w kernel.shmmax="$SHMMAX"
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return 0
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}
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process $@
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