On 09/13/13 16:15, Jack Wang wrote:
Hello Bart,
cat /sys/class/scsi_host/host36/req_lim
64
I just checked srp spec, which do define such behaviour, I wonder in
SCST/SRPT, how the request limit is chosen, is it report from low level
hardware driver?
Hello Jack,
The following code probably provides the information you are looking for:
/*
* Avoid QUEUE_FULL conditions by limiting the number of buffers used
* for the SRP protocol to the SCST SCSI command queue size.
*/
ch->rq_size = min(SRPT_RQ_SIZE, scst_get_max_lun_commands(NULL, 0));
In other words, req_lim can be increased by increasing both SRPT_RQ_SIZE
and SCST_MAX_DEV_COMMANDS.
Bart.
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