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Currently, the mpt3sas driver sets the default queue depth based on the physical interface of the attached device: - SAS : 254 - SATA: 32 - NVMe: 128 The IOC firmware provides a recommended queue depth for each device through SAS IO Unit Page1 for SAS/SATA and PCIe IO Unit Page 1 for NVMe devices. If the host sets the queue depth greater than the firmware recommended value, then the IOC places the I/Os above the recommended queue depth in an internal pending queue. This consumes outstanding host-credit/resources, thereby leading to potential starvation of other devices. To avoid this, use the device depth recommended by the IOC firmware. Link: https://lore.kernel.org/r/20210809072639.21228-2-suganath-prabu.subramani@broadcom.com Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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| .. | ||
| mpi | ||
| Kconfig | ||
| Makefile | ||
| mpt3sas_base.c | ||
| mpt3sas_base.h | ||
| mpt3sas_config.c | ||
| mpt3sas_ctl.c | ||
| mpt3sas_ctl.h | ||
| mpt3sas_debug.h | ||
| mpt3sas_debugfs.c | ||
| mpt3sas_scsih.c | ||
| mpt3sas_transport.c | ||
| mpt3sas_trigger_diag.c | ||
| mpt3sas_trigger_diag.h | ||
| mpt3sas_trigger_pages.h | ||
| mpt3sas_warpdrive.c | ||