It's nice to have the option of seeing the tools work-in-progress,
particularly as it is quite long-running. This adds some trace messages
for the calibrator method. Sample output looks like
$ tlbmiss_cost.sh --verbose
TRACE: Beginning TLB measurement using calibrator
TRACE: Measured CPU Speed: 2167 MHz
TRACE: Starting Working Set Size (WSS): 13631488 bytes
TRACE: Required tolerance for match: 3 cycles
TRACE: Measured TLB Latency 19 cycles within tolerance. Matched 1/3
TRACE: Measured TLB Latency 19 cycles within tolerance. Matched 2/3
TRACE: Measured TLB Latency 19 cycles within tolerance. Matched 3/3
TLB_MISS_COST=19
Signed-off-by: Mel Gorman <m...@csn.ul.ie>
---
tlbmiss_cost.sh | 14 +++++++++++---
1 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/tlbmiss_cost.sh b/tlbmiss_cost.sh
index 0a71ccd..3e4b260 100755
--- a/tlbmiss_cost.sh
+++ b/tlbmiss_cost.sh
@@ -85,6 +85,11 @@ calibrator_calc()
MATCHED=0
LAST_LATENCY_CYCLES=-1
+ print_trace Beginning TLB measurement using calibrator
+ print_trace Measured CPU Speed: $MHZ MHz
+ print_trace Starting Working Set Size \(WSS\): $SIZE bytes
+ print_trace Required tolerance for match: $MATCH_REQUIREMENT cycles
+
# Keep increasing size until TLB latency is being measured consistently
while [ $MATCHED -lt $MATCH_REQUIREMENT ]; do
$CALIBRATOR $MHZ $SIZE $PREFIX > $TMPFILE 2>&1
@@ -97,7 +102,6 @@ calibrator_calc()
LATENCY_CYCLES=`echo $LATENCY_CYCLES | awk '{print $1}'`
if [ "$LATENCY_CYCLES" = "" ]; then
- echo -n "No TLB Latency measured "
FAILED_MEASURE=$(($FAILED_MEASURE+1))
if [ $MEASURED -eq 0 ]; then
SIZE=$(($SIZE*3/2))
@@ -106,11 +110,11 @@ calibrator_calc()
if [ $FAILED_MEASURE -eq 3 ]; then
SIZE=$(($SIZE+$STRIDE))
FAILED_MEASURE=0
+ print_trace No TLB Latency measured:
New WSS $SIZE
else
- echo -n Retrying
+ print_trace No TLB Latency measured:
Retrying
fi
fi
- echo
continue
fi
LOW_TOLERANCE=$(($LATENCY_CYCLES-$TOLERANCE))
@@ -118,7 +122,11 @@ calibrator_calc()
if [ $LAST_LATENCY_CYCLES -ge $LOW_TOLERANCE -a \
$LAST_LATENCY_CYCLES -le $HIGH_TOLERANCE ]; then
MATCHED=$(($MATCHED+1))
+ print_trace Measured TLB Latency $LATENCY_CYCLES cycles
within tolerance. Matched $MATCHED/$MATCH_REQUIREMENT
else
+ if [ $LAST_LATENCY_CYCLES -ne -1 ]; then
+ print_trace Measured TLB Latency
$LATENCY_CYCLES cycles outside tolerance
+ fi
MATCHED=0
fi
--
1.6.3.3
------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Libhugetlbfs-devel mailing list
Libhugetlbfs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/libhugetlbfs-devel
