Yes, there is a per session limit but it is not a hard one. It is only used to limit memory usage for the send ring and can be increased to shost->can_queue. Currently, I have set the sendring to 256 depth. -- ----- Original Message ----- From: Mike Christie [mailto:michaelc@xxxxxxxxxxx] To: Jayamohan Kalickal [mailto:jayamohank@xxxxxxxxxxxxxxxxx] Cc: linux-scsi@xxxxxxxxxxxxxxx Sent: Thu, 27 Aug 2009 22:00:56 -0700 Subject: Re: [PATCH 4/6] RFC: beiscsi: iscsi hook in and handling code > Jayamohan Kalickal wrote: > > > + > > > + cls_session = > > > + iscsi_session_setup(&beiscsi_iscsi_transport, shost, cmds_max, > > > > > > > > Was there any limit on the number of commands per session? What about > > per port/scsi_host? > > The maximum number of commands is the queuedepth. Yes , we have a > limit per port(scsi_host ) as well. Am I required to specify them here. I > haven't understood the comment. > > > > I was actually just asking because I was curious and because I was > wondering about what was going on below. > > The host limit should just get set in scsi_host_template->can_queue (you > did this already). Then nelow you do not want to set the > shost->can_queue to cmds_max. > > Did the queuedepth comment mean you have a per session limit too? If so > then you at least want to do a min(cmds_max, your_max_queue_depth) to > make sure the iscsi layer does not send more commands than you can handle. > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > ___________________________________________________________________________________ This message, together with any attachment(s), contains confidential and proprietary information of ServerEngines Corporation and is intended only for the designated recipient(s) named above. Any unauthorized review, printing, retention, copying, disclosure or distribution is strictly prohibited. If you are not the intended recipient of this message, please immediately advise the sender by reply email message and delete all copies of this message and any attachment(s). Thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
