Intel® SoC Watch for oneAPI Release Notes

Linux* Release Notes Windows* Release Notes

Intel SoC Watch for Windows*

The 2021.3 release (driver v2.16.0) contains these changes:

This is a bug fix release. See Fixed Issues section for changes.

Intel SoC Watch for Linux* / Android*

The 2021.3 release (driver v2.15.0) contains these changes:

Update release 2021.3 has a fix for these issues.

• Added support for collecting additional metrics when running on Linux kernel v5.11 or newer and the
  socwatch driver is not loaded (Intel SoC Watch must be executed with root privileges). On Intel platform
  code name Tiger Lake, these features include: display-bw, ipu-bw, io-bw, llc-bw, pcie-bw, typec-bw. On
  Intel® Iris® Xe discrete graphics card, the feature is: dgfx-pwr. These metrics use Intel® Platform Monitoring
  Technology (Intel® PMT) as the data source. Due to current limitations, if the socwatch driver is loaded, these
  features will be reported as unsupported. See Installation Notes section "Prerequisites for PMT and
  Discrete Graphics Metric Collection Using Intel SoC Watch" for more information.

Linux* Release Notes Windows* Release Notes

Intel SoC Watch for Windows*

The 2021.2 release (driver v2.15.7) contains these changes:

Enhanced WakeupAnalysis reported by feature –f os-cpu-cstate when –m is included:

• Added table Histogram of Overall Idle Duration per Process to report histogram of the lengths of idle
  time between active time for each process. Three tables are produced that report Idle Hit Count, Idle
  Time in milliseconds, and Percentage of Total Collection time for each idle duration bucket.
• Modified existing table Histogram of Overall Busy Duration per Process that reports histogram of the
  lengths of busy time per process to include partial busy times for processes that start prior to
  collection start or that end after collection ends. Also modified the percentage table to calculate
  percentage as ratio of total collection duration rather than total busy time for all processes. As a result,
  the table name changed from Histogram of Overall Busy Duration per Process: Percentage of Total
  Busy Time to Histogram of Overall Busy Duration per Process: Percentage of Total Collection Time.
  This makes the data comparable to the idle histogram report and it provides a consistent time basis for
  comparison of an individual process’s % number from run to run. The previous percentage calculation
  gave a comparison between processes in a single run.
• Improved support for ia-throt-rsn on newer platforms when Windows* OS security modes (HyperV, VBS,
  HECi) are enabled on the platform. This is now disabled only if the platform CPUID is not included in the
  installed Windows OS approved list for the required register. When this occurs, Intel SoC Watch will print a
  message indicating the feature that could not be collected. For example, “NOTE: Cannot collect feature:
  ia-throt-rsn (restricted by OS security settings)”.

Intel SoC Watch for Linux* / Android*

The 2021.2 release (driver v2.14.3) contains these changes:

Update release 2021.2 has a fix for these issues.

• Command line option --log (-l) has been fixed. It was broken in v2021.1.
• Fixed issue resulting in a system hang when a user-mode application attempts to directly read the
  socwatch device driver.
• In this release we have updated the driver build script to detect the version of the cpu_freq structure
  being used in the kernel and adjust accordingly for the socwatch driver to compile on Red Hat* Enterprise
  Linux 8 OS distribution. This eliminates the need to manually make the changes described in the
  installation notes.

Linux* Release Notes Windows* Release Notes

Intel SoC Watch for Windows*

The 2021.1 release (driver v2.15.5) contains these changes:

• Added the following information to the top of the summary and trace reports:
  • System Name
  • Operating System name and build number
  • Added GUID to PMT description (as hexidecimal value)
• Extended the message that is displayed when hibernation occurs to explain how the accuracy of hibernation time can be improved if needed, "Adding option -m can increase the accuracy of the time attributed to hibernation."
• The Automation_Summary report (generated when using -r auto) now includes summary data for features ia-throt-rsn, gt-throt-rsn, and ring-throt-rsn, as well as other features which contain the table “Summary – Sampled: Counts”.
• Modified order of feature reports within the summary file to bring relevant data closer together for faster reference.
• The _WakeupAnalysis.csv report (generated when -m is used with feature os-cpu-cstate) has been modified as follows:
  • Separate tables for Idle and Busy histograms that report counts and time. Previously, these histogram tables had count and time values in a single table. Table titles were changed as part of this separation.
  • Added table “Histogram of Overall Busy Duration per Process: Percentage of Total Busy Time” to provide % calculation for the corresponding "Busy Time” table.

Intel SoC Watch for Linux* / Android*

The 2021.1 release (driver v2.14.2) contains these changes:

• Added the following information to the top of the summary and trace reports:
  • System Name
  • Operating System name and kernel number
  • Added GUID to PMT description (as hexidecimal value)
• Extended the message that is displayed when hibernation occurs to explain how the accuracy of hibernation time can be improved if needed, "Adding option -m can increase the accuracy of the time attributed to hibernation."
• The Automation_Summary report (generated when using -r auto) now includes summary data for features ia-throt-rsn, gt-throt-rsn, and ring-throt-rsn, as well as other features which contain the table “Summary – Sampled: Counts”.
• Modified order of feature reports within the summary file to bring relevant data closer together for faster reference.
• Updated socwatch driver to build for Linux 5.12 (SFI API was removed).

Linux* Release Notes Windows* Release Notes

Intel SoC Watch for Windows*

The 2020.5 release (driver v2.14.5) contains these changes:

• Feature -f hw-cpu-pstate now summarizes and reports CPU P-states per thread (logical processor) rather than per core. The per core summary gave inaccurate results on all new platforms that are running with Hyper-Threading, starting with Intel platform code named Ice Lake. Previously, SoC Watch displayed a warning about inaccurate P-state data and suggested use of –polling option as a work around on those platforms. Additional notes:
  • This change resolves occasional hardware counter correctness issue which resulted in SoC Watch displaying a warning about invalid P-state data because different counters are now used.
  • Added hidden option -f hw-cpu-pstate-per-core to get the old report for use on platforms prior to Ice Lake, where P-state collection per Core is still valid. This feature will report inaccurate results if used on Ice Lake or newer platforms unless the --polling option is included. Note: Features hw-cpu-pstate and hw-cpu-pstate-per-core are mutually exclusive. Attempting to collect both in the same run will result in an error.
• Changed table names for features -f hw-igfx-cstate and -f hw-igfx-pstate to include "Integrated". Previously, these output tables did not identify the results as Integrated Graphics vs. Discrete Graphics.
• Support for the following older platforms has been removed in this release: Intel platforms code named Anniedale, Valleyview, Cherry Trail, Haswell, and Broadwell.

Intel SoC Watch for Linux* / Android*

The 2020.5 release (driver v2.13.1) contains these changes:

• Feature -f hw-cpu-pstate now summarizes and reports CPU P-states per thread (logical processor) rather than per core. The per core summary gave inaccurate results on all new platforms that are running with Hyper-Threading, starting with Intel platform code named Ice Lake. Previously, SoC Watch displayed a warning about inaccurate P-state data and suggested use of –polling option as a work around on those platforms. Additional notes:
  • This change resolves occasional hardware counter correctness issue which resulted in SoC Watch displaying a warning about invalid P-state data because different counters are now used.
  • Added hidden option -f hw-cpu-pstate-per-core to get the old report for use on platforms prior to Ice Lake, where P-state collection per Core is still valid. This feature will report inaccurate results if used on Ice Lake or newer platforms unless the --polling option is included. Note: Features hw-cpu-pstate and hw-cpu-pstate-per-core are mutually exclusive. Attempting to collect both in the same run will result in an error.
• Changed table names for features -f hw-igfx-cstate and -f hw-igfx-pstate to include "Integrated". Previously, these output tables did not identify the results as Integrated Graphics vs. Discrete Graphics.
• Support for the following older platforms has been removed in this release: Intel platforms code named Anniedale, Valleyview, Cherry Trail, Haswell, and Broadwell.

Linux* Release Notes Windows* Release Notes

Intel SoC Watch for Windows*

• Intel® SoC Watch reports include additional topology information to differentiate data reported for multiple discrete graphics cards, CPU and integrated graphics. For example, " CPU/Package_0/Core_0", "iGPU/Graphics"  and "dGPU/DG1_173:0:0/Tile_0"
• Changed feature name -f cpu-gpu-concurrency to -f cpu-igpu-concurrency for discrete GPU vs. integrated GPU.
• Changed table names for features -f hw-igfx-cstate and -f hw-igfx-pstate to for Intel® Iris® Xe MAX support.
• Added support for Intel platform code named Tiger Lake.
• Added note to the report for feature -f os-cpu-pstate to explain the appearance of -1 as a frequency value when no P-state change event occurs.
• Removed support for the following older platforms: Intel platforms code named Anniedale, Valleyview, Cherry Trail, Haswell, and Broadwell.

Intel SoC Watch for Linux* / Android*

• Include the same changes as the windows version lists above.
• Added support for collecting package power data on Intel discrete graphics card Intel® Iris® Xe MAX (-f dgfx-pwr). Collection of this feature requires the presence of a driver that is available when running on platforms with DG1 in the Intel DevCloud.
• Intel SoC Watch collections can now be executed by users group do not have root privilege, however inserting the SoC Watch driver kernel module still requires root privilege.
• Use command rmmod-socwatch to remove permission for the default group. To give non-root collection access to users of a different specific group, use the following : ./drivers/insmod-socwatch -g <permitted-group>.