Re: [PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth
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_TARGETCXGB3I_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? Or is there a per session/connection pdu, command, skb, byte limit? And then is there a limit on the number of session/connections? --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
RE: [PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth
-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. --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
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_DFLT128 +#define CXGB3I_SCSI_QDEPTH_DFLT1024 #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 -~--~~~~--~~--~--~---
RE: [PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth
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_DFLT128 +#define CXGB3I_SCSI_QDEPTH_DFLT1024 #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 -~--~~~~--~~--~--~---
[PATCH 1/1 2.6.30] cxgb3i -- increase command queue depth
[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_DFLT128 +#define CXGB3I_SCSI_QDEPTH_DFLT1024 #define CXGB3I_MAX_TARGET CXGB3I_MAX_CONN #define CXGB3I_MAX_LUN 512 #define ISCSI_PDU_NONPAYLOAD_MAX \ --~--~-~--~~~---~--~~ 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 -~--~~~~--~~--~--~---
