blob: 41a3acfae7a48d6a1d1822efbf90c8caa1753317 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
#!/bin/sh
#
# Display most relevant iostat bandwidth/latency numbers. The output is
# dependent on the name of the script/symlink used to call it.
#
helpstr="
iostat: Show iostat values since boot (summary page).
iostat-1s: Do a single 1-second iostat sample and show values.
iostat-10s: Do a single 10-second iostat sample and show values."
script=$(basename "$0")
if [ "$1" = "-h" ] ; then
echo "$helpstr" | grep "$script:" | tr -s '\t' | cut -f 2-
exit
fi
if [ "$script" = "iostat-1s" ] ; then
# Do a single one-second sample
interval=1
# Don't show summary stats
brief="yes"
elif [ "$script" = "iostat-10s" ] ; then
# Do a single ten-second sample
interval=10
# Don't show summary stats
brief="yes"
fi
if [ -f "$VDEV_UPATH" ] ; then
# We're a file-based vdev, iostat doesn't work on us. Do nothing.
exit
fi
if [ "$(uname)" = "FreeBSD" ]; then
out=$(iostat -dKx \
${interval:+"-w $interval"} \
${interval:+"-c 1"} \
"$VDEV_UPATH" | tail -n 2)
else
out=$(iostat -kx \
${brief:+"-y"} \
${interval:+"$interval"} \
${interval:+"1"} \
"$VDEV_UPATH" | awk NF | tail -n 2)
fi
# Sample output (we want the last two lines):
#
# Linux 2.6.32-642.13.1.el6.x86_64 (centos68) 03/09/2017 _x86_64_ (6 CPU)
#
# avg-cpu: %user %nice %system %iowait %steal %idle
# 0.00 0.00 0.00 0.00 0.00 100.00
#
# Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
# sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
#
# Get the column names
cols=$(echo "$out" | head -n 1)
# Get the values and tab separate them to make them cut-able.
vals=$(echo "$out" | tail -n 1 | sed -r 's/[[:blank:]]+/\t/g')
i=0
for col in $cols ; do
i=$((i+1))
# Skip the first column since it's just the device name
if [ $i -eq 1 ]; then
continue
fi
# Get i'th value
val=$(echo "$vals" | cut -f "$i")
echo "$col=$val"
done
|
