c24e2ea0ca
Added new tuned-adm functionality 'profile_info'. It has optional parameter 'profile_name'. If called without parameter, active profile is used. It outputs name of the profile it is querying, profile summary, and profile description. If there is no profile summary or description available it outputs empty string(s). Extended tuned-adm 'list' functionality. It now displays profile summary in the list (if available). Added summary to profiles. Extended D-Bus API to support the new feature and for better Cockpit support: - Added 'profile_info' method. It gets profile_name argument and it queries the requested profile for information. If profile_name is empty string it queries the active/selected profile. It returns tuple of the following format (status, profile_name, summary, description), where status is boolean. If it is False, the query mechanism failed and the other fields don't contain valid data - Added 'profiles2' method. It's extension of 'profiles' method. It returns list of tuples. Tuples have following format: (profile_name, profile_summary) Related: rhbz#1228356 Fixes: #46 Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
59 lines
2.1 KiB
Text
59 lines
2.1 KiB
Text
#
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# tuned configuration
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#
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[main]
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summary=Broadly applicable tuning that provides excellent performance across a variety of common server workloads. This is the default profile for RHEL7.
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[cpu]
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governor=performance
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energy_perf_bias=performance
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min_perf_pct=100
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[disk]
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readahead=>4096
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[sysctl]
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# ktune sysctl settings for rhel6 servers, maximizing i/o throughput
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#
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# Minimal preemption granularity for CPU-bound tasks:
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# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
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kernel.sched_min_granularity_ns = 10000000
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# SCHED_OTHER wake-up granularity.
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# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
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#
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# This option delays the preemption effects of decoupled workloads
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# and reduces their over-scheduling. Synchronous workloads will still
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# have immediate wakeup/sleep latencies.
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kernel.sched_wakeup_granularity_ns = 15000000
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# If a workload mostly uses anonymous memory and it hits this limit, the entire
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# working set is buffered for I/O, and any more write buffering would require
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# swapping, so it's time to throttle writes until I/O can catch up. Workloads
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# that mostly use file mappings may be able to use even higher values.
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#
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# The generator of dirty data starts writeback at this percentage (system default
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# is 20%)
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vm.dirty_ratio = 40
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# Start background writeback (via writeback threads) at this percentage (system
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# default is 10%)
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vm.dirty_background_ratio = 10
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# PID allocation wrap value. When the kernel's next PID value
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# reaches this value, it wraps back to a minimum PID value.
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# PIDs of value pid_max or larger are not allocated.
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#
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# A suggested value for pid_max is 1024 * <# of cpu cores/threads in system>
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# e.g., a box with 32 cpus, the default of 32768 is reasonable, for 64 cpus,
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# 65536, for 4096 cpus, 4194304 (which is the upper limit possible).
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#kernel.pid_max = 65536
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# The swappiness parameter controls the tendency of the kernel to move
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# processes out of physical memory and onto the swap disk.
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# 0 tells the kernel to avoid swapping processes out of physical memory
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# for as long as possible
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# 100 tells the kernel to aggressively swap processes out of physical memory
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# and move them to swap cache
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vm.swappiness=10
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