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Diffstat (limited to 'etc')
| -rw-r--r-- | etc/iscsid.conf | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/etc/iscsid.conf b/etc/iscsid.conf index 4f6e08a..686b3f9 100644 --- a/etc/iscsid.conf +++ b/etc/iscsid.conf @@ -146,6 +146,27 @@ node.session.cmds_max = 128 # to a value between 1 and 128. The default is 32. node.session.queue_depth = 32 +################################## +# MISC SYSTEM PERFORMANCE SETTINGS +################################## + +# For software iscsi (iscsi_tcp) and iser (ib_iser) each session +# has a thread used to transmit or queue data to the hardware. For +# cxgb3i you will get a thread per host. +# +# Setting the thread's priority to a lower value can lead to higher throughput +# and lower latencies. The lowest value is -20. Setting the priority to +# a higher value, can lead to reduced IO performance, but if you are seeing +# the iscsi or scsi threads dominate the use of the CPU then you may want +# to set this value higher. +# +# Note: For cxgb3i you must set all sessions to the same value, or the +# behavior is not defined. +# +# The default value is -20. The setting must be between -20 and 20. +node.session.xmit_thread_priority = -20 + + #*************** # iSCSI settings #*************** |