| What: /sys/kernel/debug/qat_<device>_<BDF>/qat/fw_counters |
| Date: November 2023 |
| KernelVersion: 6.6 |
| Contact: qat-linux@intel.com |
| Description: (RO) Read returns the number of requests sent to the FW and the number of responses |
| received from the FW for each Acceleration Engine |
| Reported firmware counters:: |
| |
| <N>: Number of requests sent from Acceleration Engine N to FW and responses |
| Acceleration Engine N received from FW |
| |
| What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/config |
| Date: November 2023 |
| KernelVersion: 6.6 |
| Contact: qat-linux@intel.com |
| Description: (RW) Read returns value of the Heartbeat update period. |
| Write to the file changes this period value. |
| |
| This period should reflect planned polling interval of device |
| health status. High frequency Heartbeat monitoring wastes CPU cycles |
| but minimizes the customer’s system downtime. Also, if there are |
| large service requests that take some time to complete, high frequency |
| Heartbeat monitoring could result in false reports of unresponsiveness |
| and in those cases, period needs to be increased. |
| |
| This parameter is effective only for c3xxx, c62x, dh895xcc devices. |
| 4xxx has this value internally fixed to 200ms. |
| |
| Default value is set to 500. Minimal allowed value is 200. |
| All values are expressed in milliseconds. |
| |
| What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_failed |
| Date: November 2023 |
| KernelVersion: 6.6 |
| Contact: qat-linux@intel.com |
| Description: (RO) Read returns the number of times the device became unresponsive. |
| |
| Attribute returns value of the counter which is incremented when |
| status query results negative. |
| |
| What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/queries_sent |
| Date: November 2023 |
| KernelVersion: 6.6 |
| Contact: qat-linux@intel.com |
| Description: (RO) Read returns the number of times the control process checked |
| if the device is responsive. |
| |
| Attribute returns value of the counter which is incremented on |
| every status query. |
| |
| What: /sys/kernel/debug/qat_<device>_<BDF>/heartbeat/status |
| Date: November 2023 |
| KernelVersion: 6.6 |
| Contact: qat-linux@intel.com |
| Description: (RO) Read returns the device health status. |
| |
| Returns 0 when device is healthy or -1 when is unresponsive |
| or the query failed to send. |
| |
| The driver does not monitor for Heartbeat. It is left for a user |
| to poll the status periodically. |
