Yes, the ddp map is per-adapter. -----Original Message----- From: open-iscsi@googlegroups.com [mailto:open-is...@googlegroups.com] On Behalf Of Mike Christie Sent: Tuesday, April 07, 2009 1:11 PM To: open-iscsi@googlegroups.com Subject: Re: [PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth
Karen Xie wrote: > > > -----Original Message----- > From: Mike Christie [mailto:micha...@cs.wisc.edu] > Sent: Tuesday, April 07, 2009 9:00 AM > To: open-iscsi@googlegroups.com > Cc: Karen Xie > Subject: Re: [PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth > > Mike Christie wrote: >> k...@chelsio.com wrote: >>> [PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth >>> >>> From: Karen Xie <k...@chelsio.com> >>> >>> From: Karen Xie <k...@chelsio.com> >>> >>> Bump the command queue depth. >>> >>> Signed-off-by: Karen Xie <k...@chelsio.com> >>> --- >>> --- >>> >>> drivers/scsi/cxgb3i/cxgb3i.h | 2 +- >>> 1 files changed, 1 insertions(+), 1 deletions(-) >>> >>> >>> diff --git a/drivers/scsi/cxgb3i/cxgb3i.h > b/drivers/scsi/cxgb3i/cxgb3i.h >>> index d362860..68ed5db 100644 >>> --- a/drivers/scsi/cxgb3i/cxgb3i.h >>> +++ b/drivers/scsi/cxgb3i/cxgb3i.h >>> @@ -34,7 +34,7 @@ >>> #include "cxgb3i_offload.h" >>> #include "cxgb3i_ddp.h" >>> >>> -#define CXGB3I_SCSI_QDEPTH_DFLT 128 >>> +#define CXGB3I_SCSI_QDEPTH_DFLT 1024 >>> #define CXGB3I_MAX_TARGET CXGB3I_MAX_CONN >>> #define CXGB3I_MAX_LUN 512 >>> #define ISCSI_PDU_NONPAYLOAD_MAX \ >>> >> Is there a max number of iscsi pdus or scsi commands or skbs or max >> number of bytes that we can send to the card? > > [Karen] There are per-connection limits but they are more related to the > tcp layer (say send and receive windows). > > Also is there a limit for each port/scsi_host? > > [Karen] The hardware actually does not maintain any iscsi/scsi related > state. For IOs, there is data memory map for directly DMAing data to the > scsi data buffer (for read). But the memory map is not organized > according to # of IOs but rather it is related to the total numbers of > data buffers. > This is the ddp map, right? And that is snic wide (it is not port wide)? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to open-iscsi@googlegroups.com To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/open-iscsi -~----------~----~----~----~------~----~------~--~---
