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Merge pull request #347 from jtval/docupdate-includedprofiles

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adding profile descriptions included in downstream
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Jaroslav Škarvada 2021-05-18 12:30:50 +02:00 committed by GitHub
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doc/manual/modules/performance/ref_tuned-profiles-distributed-with-rhel.adoc
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@ -24,20 +24,36 @@ That is why the `balanced` profile can be generally a better option.
`throughput-performance`::
A server profile optimized for high throughput. It disables power savings mechanisms and enables `sysctl` settings that improve the throughput performance of the disk and network IO. CPU governor is set to `performance`.
`accelerator-performance`::
The `accelerator-performance` profile contains the same tuning as the `throughput-performance` profile. Additionally, it locks the CPU to low C states so that the latency is less than 100us. This improves the performance of certain accelerators, such as GPUs.
`latency-performance`::
A server profile optimized for low latency. It disables power savings mechanisms and enables `sysctl` settings that improve latency. CPU governor is set to `performance` and the CPU is locked to the low C states (by PM QoS).
+
It changes the `energy_performance_preference` and `scaling_governor` attribute to the `performance` profile.
`network-latency`::
A profile for low latency network tuning. It is based on the `latency-performance` profile. It additionally disables transparent huge pages and NUMA balancing, and tunes several other network-related `sysctl` parameters.
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It inherits the `latency-performance` profile which changes the `energy_performance_preference` and `scaling_governor` attribute to the `performance` profile.
`hpc-compute`::
A profile optimized for high-performance computing. It is based on the `latency-performance` profile.
`network-throughput`::
A profile for throughput network tuning. It is based on the `throughput-performance` profile. It additionally increases kernel network buffers.
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It inherits either the `latency-performance` or `throughput-performance` profile, and changes the `energy_performance_preference` and `scaling_governor` attribute to the `performance` profile.
`virtual-guest`::
A profile designed for virtual guests based on the `throughput-performance` profile that, among other tasks, decreases virtual memory swappiness and increases disk readahead values. It does not disable disk barriers.
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It inherits the `throughput-performance` profile and changes the `energy_performance_preference` and `scaling_governor` attribute to the `performance` profile.
`virtual-host`::
A profile designed for virtual hosts based on the `throughput-performance` profile that, among other tasks, decreases virtual memory swappiness, increases disk readahead values, and enables a more aggressive value of dirty pages writeback.
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It inherits the `throughput-performance` profile and changes the `energy_performance_preference` and `scaling_governor` attribute to the `performance` profile.
`oracle`::
A profile optimized for Oracle databases loads based on `throughput-performance` profile. It additionally disables transparent huge pages and modifies other performance-related kernel parameters. This profile is provided by the [package]`tuned-profiles-oracle` package.
@ -60,9 +76,31 @@ You can configure the `cpu-partitioning` profile in `/etc/tuned/cpu-partitioning
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For more information on `cpu-partitioning`, see the `tuned-profiles-cpu-partitioning(7)` man page.
`optimize-serial-console`::
A profile that tunes down I/O activity to the serial console by reducing the
printk value. This should make the serial console more responsive.
This profile is intended to be used as an overlay on other
profiles. For example:
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[subs=+quotes]
----
# tuned-adm profile throughput-performance optimize-serial-console
----
`mssql`::
A profile provided for Microsoft SQL Server. It is based on the `thoguhput-performance` profile.
`postgresql`::
A profile optimized for PostgreSQL databases loads based on `throughput-performance` profile. It additionally disables transparent huge pages and modifies other performance-related kernel parameters. This profile is provided by the [package]`tuned-profiles-postgresql` package.
`intel-sst`::
A profile optimized for systems with user-defined Intel Speed Select Technology configurations. This profile is intended to be used as an overlay on other profiles. For example:
+
[subs=+quotes]
----
# tuned-adm profile cpu-partitioning intel-sst
----
[discrete]
== Real-time profiles
@ -84,4 +122,3 @@ Provided by the [package]`tuned-profiles-nfv-host` package, which is available f
Use in a virtualization guest configured for real-time.
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Provided by the [package]`tuned-profiles-nfv-guest` package, which is available from the NFV repository.