raw device support
sg3_utils
-
Overview
--------
(make sure the kernel module "sg" is loaded)
Raw device:
Must appear in the output of 'raw -qa'
-You may not mix raw and SCSI devices in the test specification.
+ If you need to create raw devices in order to use this tool, note that
+ raw device 0 can not be used due to a bug in certain versions of the
+ "raw" utility (including that shipped with RHEL4U4.)
+
+You may not mix raw and SCSI devices in the test specification.
Running
-------
If not all the sgp_dd instances successfully reported a bandwidth number
"failed" is printed.
-
Visualising Results
-------------------
regions) all seem to land on top of each other, it shows the device is
phased by seeks at the given record size.
-
-The included script "parse.pl" will process output files and create
-.csv files for spreadsheet import
-
-The "plot-sgpdd.pl" script plots the results directly using gnuplot.
+The included script "plot-sgpdd" will process output files and create
+.dat (similar to csv) files for spreadsheet import. It also plots the
+results directly using gnuplot and creates .png files.