Red Hat ENTERPRISE LINUX 3 Reference Manual page 85

proc
Chapter 5. The
Each SCSI driver used by the system has its own directory within
files specific to each SCSI controller using that driver. From the previous example,
directories are present, since two drivers are in use. The files in each of the directories
megaraid
typically contain an I/O address range, IRQ information, and statistics for the SCSI controller using
that driver. Each controller can report a different type and amount of information. The Adaptec AIC-
7880 Ultra SCSI host adapter's file in this example system produces the following output:
Adaptec AIC7xxx driver version: 5.1.20/3.2.4
Compile Options:
TCQ Enabled By Default : Disabled
AIC7XXX_PROC_STATS
AIC7XXX_RESET_DELAY
Adapter Configuration:
SCSI Adapter: Adaptec AIC-7880 Ultra SCSI host adapter
PCI MMAPed I/O Base: 0xfcffe000
Adapter SEEPROM Config: SEEPROM found and used.
Adaptec SCSI BIOS: Enabled
Interrupts: 33726
BIOS Control Word: 0x18a6
Adapter Control Word: 0x1c5f
Extended Translation: Enabled
Disconnect Enable Flags: 0x00ff
Ultra Enable Flags: 0x0020
Tag Queue Enable Flags: 0x0000
Ordered Queue Tag Flags: 0x0000
Default Tag Queue Depth: 8
Tagged Queue By Device array for aic7xxx host instance 1:
{255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
Actual queue depth per device for aic7xxx host instance 1:
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}
Statistics:
(scsi1:0:5:0)
Device using Narrow/Sync transfers at 20.0 MByte/sec, offset 15
Transinfo settings: current(12/15/0/0), goal(12/15/0/0), user(12/15/0/0)
Total transfers 0 (0 reads and 0 writes)
< 2K
Reads:
Writes:
(scsi1:0:6:0)
Device using Narrow/Sync transfers at 10.0 MByte/sec, offset 15
Transinfo settings: current(25/15/0/0), goal(12/15/0/0), user(12/15/0/0)
Total transfers 132 (0 reads and 132 writes)
< 2K
Reads:
Writes:
This output reveals the transfer speed to the SCSI devices connected to the controller based on channel
ID, as well as detailed statistics concerning the amount and sizes of files read or written by that device.
File System
: Enabled
: 5
Ultra Narrow Controller
IRQ: 30
SCBs: Active 0, Max Active 1,
Allocated 15, HW 16, Page 255
2K+ 4K+
0 0
0 0
2K+ 4K+
0 0
0 0
8K+ 16K+
0 0
0 0
8K+ 16K+
0 0
0 1 131
/proc/scsi/
32K+ 64K+
0 0
0 0
32K+ 64K+
0 0
0
67
, which contains
and
aic7xxx
128K+
0 0
0 0
128K+
0 0
0 0