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Merge pull request #46 from dabb/master

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Added a L2ARC size and efficiency functions to zfs_stats_
This commit is contained in:
Kenyon Ralph 2012-02-24 13:23:18 -08:00
commit ca363693d7
1 changed files with 59 additions and 16 deletions
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75
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
@ -59,6 +61,11 @@ MAX_SIZE=`$SYS kstat.zfs.misc.arcstats.c_max`
MIN_SIZE=`$SYS kstat.zfs.misc.arcstats.c_min`
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=`$SYS kstat.zfs.misc.arcstats.l2_misses`
#
# Calculation macros
@ -83,13 +90,13 @@ MOST_RECENTLY_USED_GHOST_PERC=`echo "scale=2 ; (100*$MRU_GHOST_HITS/$ARC_HITS)"
MOST_FREQUENTLY_USED_GHOST_PERC=`echo "scale=2 ; (100*$MFU_GHOST_HITS/$ARC_HITS)" | $BC`
DEMAND_DATA_HIT_PERC=`echo "scale=2 ; (100*$DEMAND_DATA_HITS/$ARC_HITS)" | $BC`
DEMAND_DATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_DATA_MISSES/$ARC_HITS)" | $BC`
DEMAND_DATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_DATA_MISSES/$ARC_MISSES)" | $BC`
PREFETCH_DATA_HIT_PERC=`echo "scale=2 ; (100*$PREFETCH_DATA_HITS/$ARC_HITS)" | $BC`
PREFETCH_DATA_MISS_PERC=`echo "scale=2 ; (100*$PREFETCH_DATA_MISSES/$ARC_HITS)" | $BC`
PREFETCH_DATA_MISS_PERC=`echo "scale=2 ; (100*$PREFETCH_DATA_MISSES/$ARC_MISSES)" | $BC`
DEMAND_METADATA_HIT_PERC=`echo "scale=2 ; (100*$DEMAND_METADATA_HITS/$ARC_HITS)" | $BC`
DEMAND_METADATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_METADATA_MISSES/$ARC_HITS)" | $BC`
DEMAND_METADATA_MISS_PERC=`echo "scale=2 ; (100*$DEMAND_METADATA_MISSES/$ARC_MISSES)" | $BC`
PREFETCH_METADATA_HIT_PERC=`echo "scale=2 ; (100*$PREFETCH_METADATA_HITS/$ARC_HITS)" | $BC`
PREFETCH_METADATA_MISSES_PERC=`echo "scale=2 ; (100*$PREFETCH_METADATA_MISSES/$ARC_HITS)" | $BC`
PREFETCH_METADATA_MISSES_PERC=`echo "scale=2 ; (100*$PREFETCH_METADATA_MISSES/$ARC_MISSES)" | $BC`
DMU_TOTAL=`echo "$DMU_HITS+$DMU_MISSES" | $BC`
DMU_HITS_PERC=`echo "scale=2 ; (100*$DMU_HITS/$DMU_TOTAL)" | $BC`
@ -101,18 +108,19 @@ else
MFU_SIZE=`echo "$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
echo 'graph_title ZFS ARC Efficiency'
echo 'graph_args -u 100'
echo 'graph_vlabel %'
echo 'graph_category ZFS'
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'
@ -132,7 +140,6 @@ cachehitlist() {
echo 'graph_title ZFS ARC Efficiency: Cache hits by cache list'
echo 'graph_args -u 100'
echo 'graph_vlabel %'
echo 'graph_category ZFS'
echo 'graph_info This graph shows the ARC Efficiency'
echo 'cache_list_anon.label Anonymously Used'
@ -156,7 +163,6 @@ cachehitdtype() {
echo 'graph_title ZFS ARC Efficiency: Cache hits by data type'
echo 'graph_args -u 100'
echo 'graph_vlabel %'
echo 'graph_category ZFS'
echo 'graph_info This graph shows the ARC Efficiency'
echo 'data_type_demand_hits.label Demand Data Hit Ratio'
@ -182,16 +188,14 @@ cachehitdtype() {
}
dmuprefetch() {
if [ "$1" = "config" ]; then
echo 'graph_title ZFS DMU prefetch stats'
echo 'graph_args -u 100'
echo 'graph_vlabel %'
echo 'graph_category ZFS'
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
@ -201,12 +205,10 @@ dmuprefetch() {
}
utilization() {
if [ "$1" = "config" ]; then
echo 'graph_title ZFS ARC Size'
echo 'graph_args --base 1024 -l 0 --vertical-label Bytes --upper-limit '$MEMMAX
echo 'graph_vlabel Size in MB'
echo 'graph_category ZFS'
echo 'graph_info This graph shows the ARC Size utilization'
echo 'max_size.label Maximum Size'
@ -233,6 +235,41 @@ utilization() {
fi
}
l2utilization() {
if [ "$1" = "config" ]; then
echo 'graph_title ZFS L2ARC Size'
echo 'graph_args --base 1024 -r -l 0 --vertical-label Bytes'
echo 'graph_vlabel Size in MB'
echo 'graph_info This graph shows the L2ARC Size utilization'
echo 'size.label Size'
echo 'size.draw AREA'
echo 'hdr_size.label Header Size'
echo 'hdr_size.draw AREA'
exit 0
else
echo 'size.value ' $L2_SIZE
echo 'hdr_size.value ' $L2_HDR_SIZE
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
@ -251,4 +288,10 @@ case "$FUNCTION" in
utilization)
utilization $1
;;
l2utilization)
l2utilization $1
;;
l2efficiency)
l2efficiency $1
;;
esac