b=10958

[fs/lustre-release.git] / lustre-iokit / sgpdd-survey / sgpdd-survey

diff --git a/lustre-iokit/sgpdd-survey/sgpdd-survey b/lustre-iokit/sgpdd-survey/sgpdd-survey
index b5c1f01..2b6c419 100755 (executable)
--- a/lustre-iokit/sgpdd-survey/sgpdd-survey
+++ b/lustre-iokit/sgpdd-survey/sgpdd-survey
@@ -18,7 +18,7 @@ actions="write read"
 
 # total size per device (MBytes)
 # NB bigger than device cache is good
-size=8192
+size=${size:-8192}
 
 # record size (KBytes)
 rszlo=1024
@@ -29,6 +29,7 @@ crglo=${crglo:-1}
 crghi=${crghi:-256}
 
 # threads to share between concurrent regions per device
+# multiple threads per region simulates a deeper request queue
 # NB survey skips over #thr < #regions and #thr/#regions > SG_MAX_QUEUE
 thrlo=${thrlo:-1}
 thrhi=${thrhi:-4096}
@@ -94,6 +95,15 @@ print_summary () {
     echo $minusn "$*"
 }
 
+time_v=`date`
+hostname=`hostname`
+if [ "$rawdevs" ]; then
+       print_summary "$time_v sgpdd-survey on $rawdevs from $hostname"
+fi
+if [ "$scsidevs" ]; then
+       print_summary "$time_v sgpdd-survey on $scsidevs from $hostname"
+fi
+
 for ((rsz=$rszlo;rsz<=$rszhi;rsz*=2)); do
     for ((crg=$crglo;crg<=$crghi;crg*=2)); do 
        for ((thr=$thrlo;thr<=$thrhi;thr*=2)); do