45 lines
1.5 KiB
Text
45 lines
1.5 KiB
Text
#
|
|
# tuned configuration
|
|
#
|
|
|
|
[cpu]
|
|
force_latency=1
|
|
governor=performance
|
|
energy_perf_bias=performance
|
|
min_perf_pct=100
|
|
|
|
[vm]
|
|
transparent_hugepages=never
|
|
|
|
[sysctl]
|
|
# ktune sysctl settings for rhel6 servers, maximizing i/o throughput
|
|
#
|
|
# Minimal preemption granularity for CPU-bound tasks:
|
|
# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
|
|
kernel.sched_min_granularity_ns=10000000
|
|
|
|
# If a workload mostly uses anonymous memory and it hits this limit, the entire
|
|
# working set is buffered for I/O, and any more write buffering would require
|
|
# swapping, so it's time to throttle writes until I/O can catch up. Workloads
|
|
# that mostly use file mappings may be able to use even higher values.
|
|
#
|
|
# The generator of dirty data starts writeback at this percentage (system default
|
|
# is 20%)
|
|
vm.dirty_ratio=10
|
|
|
|
# Start background writeback (via writeback threads) at this percentage (system
|
|
# default is 10%)
|
|
vm.dirty_background_ratio=3
|
|
|
|
# The swappiness parameter controls the tendency of the kernel to move
|
|
# processes out of physical memory and onto the swap disk.
|
|
# 0 tells the kernel to avoid swapping processes out of physical memory
|
|
# for as long as possible
|
|
# 100 tells the kernel to aggressively swap processes out of physical memory
|
|
# and move them to swap cache
|
|
vm.swappiness=10
|
|
|
|
# The total time the scheduler will consider a migrated process
|
|
# "cache hot" and thus less likely to be re-migrated
|
|
# (system default is 500000, i.e. 0.5 ms)
|
|
kernel.sched_migration_cost_ns=5000000
|