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Added a L2ARC efficiency function, also some label consistency changes

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David Bjornsson 2012-02-24 14:45:26 +00:00
parent 1617487802
commit cbe4553411
1 changed files with 31 additions and 4 deletions
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35
plugins/zfs/zfs_stats_
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@ -18,6 +18,8 @@
# cachehitdtype - Cache hit by data type
# dmuprefetch - DMU prefetch
# utilization - ARC size breakdown
# l2utilization - L2ARC size breakdown
# l2efficiency - L2ARC efficiency
#
#%# family=auto
@ -62,6 +64,9 @@ TARGET_SIZE=`$SYS kstat.zfs.misc.arcstats.c`
L2_SIZE=`$SYS kstat.zfs.misc.arcstats.l2_size`
L2_HDR_SIZE=`$SYS kstat.zfs.misc.arcstats.l2_hdr_size`
L2_HITS=`$SYS kstat.zfs.misc.arcstats.l2_hits`
L2_MISSES=`$SYS kstat.zfs.misc.arcstats.l2_misses`
#
# Calculation macros
#
@ -103,6 +108,9 @@ else
MFU_SIZE=`echo "$TARGET_SIZE-$MRU_SIZE" | $BC`
fi
L2_ACCESSES_TOTAL=`echo "$L2_HITS+$L2_MISSES" | $BC`
L2_HIT_RATIO_PERC=`echo "scale=2 ; (100*$L2_HITS/$L2_ACCESSES_TOTAL)" | $BC`
L2_MISS_RATIO_PERC=`echo "scale=2 ; (100*$L2_MISSES/$L2_ACCESSES_TOTAL)" | $BC`
efficiency() {
if [ "$1" = "config" ]; then
@ -111,8 +119,8 @@ efficiency() {
echo 'graph_vlabel %'
echo 'graph_info This graph shows the ARC Efficiency'
echo 'hits.label Cache Hit Ratio'
echo 'misses.label Cache Miss Ratio'
echo 'hits.label Hit Ratio'
echo 'misses.label Miss Ratio'
echo 'actual_hits.label Actual Hit Ratio'
echo 'data_demand_efficiency.label Data Demand Efficiency'
echo 'data_prefetch_efficiency.label Data Prefetch Efficiency'
@ -186,8 +194,8 @@ dmuprefetch() {
echo 'graph_vlabel %'
echo 'graph_info This graph shows the DMU prefetch stats'
echo 'hits.label Hit percentage'
echo 'misses.label Miss percentage'
echo 'hits.label Hit Ratio'
echo 'misses.label Miss Ratio'
exit 0
else
@ -246,6 +254,22 @@ l2utilization() {
fi
}
l2efficiency() {
if [ "$1" = "config" ]; then
echo 'graph_title ZFS L2ARC Efficiency'
echo 'graph_args -u 100'
echo 'graph_vlabel %'
echo 'graph_info This graph shows the L2ARC Efficiency'
echo 'l2_hits.label Hit Ratio'
echo 'l2_misses.label Miss Ratio'
else
echo 'l2_hits.value ' $L2_HIT_RATIO_PERC
echo 'l2_misses.value ' $L2_MISS_RATIO_PERC
fi
}
[ "$1" = "config" ] && echo "graph_category zfs"
case "$FUNCTION" in
@ -267,4 +291,7 @@ case "$FUNCTION" in
l2utilization)
l2utilization $1
;;
l2efficiency)
l2efficiency $1
;;
esac