{"id":2976,"date":"2014-03-30T17:34:47","date_gmt":"2014-03-30T09:34:47","guid":{"rendered":"http:\/\/rmohan.com\/?p=2976"},"modified":"2014-03-30T17:37:45","modified_gmt":"2014-03-30T09:37:45","slug":"sar-linux","status":"publish","type":"post","link":"https:\/\/mohan.sg\/?p=2976","title":{"rendered":"Sar Linux"},"content":{"rendered":"

 <\/p>\n

Sar… Networking<\/a><\/h1>\n
echo \"Rcvd Bytes - Time\";\\\r\n(unset LANG; sar -n DEV) | grep eth0 | awk '{print ($5\" - \"$1)}' | sort -nr | head -n5;\\\r\necho \"Average:    `sar -n DEV |grep eth0| tail -n1 | awk '{print ($5)}'`\"<\/pre>\n
Example:<\/p>\n
$ echo \"Rcvd Bytes - Time\";\\\r\n(unset LANG; sar -n DEV) | grep eth0 | awk '{print ($5\" - \"$1)}' | sort -nr | head -n5;\\\r\necho \"Average:    `sar -n DEV |grep eth0| tail -n1 | awk '{print ($5)}'`\"\r\nRcvd Bytes - Time\r\n1.72 - 09:00:01\r\n1.58 - 01:30:01\r\n1.26 - 01:20:01\r\n1.10 - 01:40:01\r\n1.09 - 03:30:01\r\nAverage:    0.83 \r\n\r\nxample:\r\n\r\n\u00a0echo \"Rcvd Bytes - Time\";\\\r\n(unset LANG; sar -n DEV) | grep eth0 | awk '{print ($5\" - \"$1)}' | sort -nr | head -n5;\\\r\necho \"Average:\u00a0\u00a0\u00a0 `sar -n DEV |grep eth0| tail -n1 | awk '{print ($5)}'`\"\r\nRcvd Bytes - Time\r\n1.72 - 09:00:01\r\n1.58 - 01:30:01\r\n1.26 - 01:20:01\r\n1.10 - 01:40:01\r\n1.09 - 03:30:01\r\nAverage:\u00a0\u00a0\u00a0 0.83\r\n\r\nAlso just the usual \u2018top n tailed\u2019 format to show the last 20 records for \u2018received bytes\u2019:\r\n\r\n(unset LANG; sar -n DEV) | grep tx |head -n1| awk '{print (\"\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \"$6)}';\\\r\n(unset LANG; sar -n DEV) | grep eth0 | tail -20 | awk '{print ($1,$2\" - \"$6)}';\r\n\r\nExample:\r\n\r\n\u00a0 (unset LANG; sar -n DEV) | grep tx |head -n1| awk '{print (\"\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \"$6)}';\\\r\n(unset LANG; sar -n DEV) | grep eth0 | tail -20 | awk '{print ($1,$2\" - \"$6)}';\r\ntxkB\/s\r\n11:50:01 eth0 - 1.69\r\n12:00:01 eth0 - 0.40\r\n12:10:01 eth0 - 0.01\r\n12:20:01 eth0 - 0.01\r\n12:30:01 eth0 - 0.01\r\n12:40:01 eth0 - 0.01\r\n12:50:01 eth0 - 0.01\r\n13:00:01 eth0 - 0.01\r\n13:10:01 eth0 - 0.01\r\n13:20:01 eth0 - 0.01\r\n13:30:01 eth0 - 0.01\r\n13:40:01 eth0 - 0.01\r\n13:50:01 eth0 - 0.25\r\n14:00:01 eth0 - 0.10\r\n14:10:01 eth0 - 0.02\r\n14:20:01 eth0 - 0.01\r\n14:30:01 eth0 - 0.03\r\n14:40:01 eth0 - 0.86\r\n14:50:01 eth0 - 0.22\r\nAverage: eth0 - 1.56\r\n\r\nYou\u2019ll notice that I use \u2018unset LANG\u2019 in a lot of the examples. This removes AM\/PM from the output and tailors the results instead in 24hr clock format. It makes the output a lot more predictable when on different machines!<\/pre>\n
Sar… Memory<\/a><\/h1>\n
o one of the big problems with Sar is that it\u2019s pretty \u2018dumb\u2019 with its \u2018memory free\u2019 reporting. Although the information from Sar is great, a colleague of mine gave me the basis for a few more one liners that will perform a calculation to ensure that buffers\/cache are taken into account as their usage is relinquished under system load.<\/p>\n
Again, all of my commands are pretty hacky, and probably not examples of good scripting \u2013 but they get the job done!<\/p>\n
Show the \u2018real\u2019 memory usage, the last column gives the true value:<\/p>\n
(unset LANG ;sar\u00a0 -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);\\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’<\/p>\n
Example:<\/p>\n
(unset LANG ;sar\u00a0 -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);\\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’<\/p>\n
Linux 2.6.xx (influencd.co.uk)\u00a0\u00a0\u00a0\u00a0 05\/31\/10
\n00:00:01\u00a0\u00a0\u00a0 kbmemfree kbmemused\u00a0 %memused kbbuffers\u00a0 kbcached kbswpfree kbswpused\u00a0 %swpused\u00a0 kbswpcad
\n00:10:01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 109904\u00a0\u00a0\u00a0 295708\u00a0\u00a0\u00a0\u00a0 72.90\u00a0\u00a0\u00a0\u00a0 43432\u00a0\u00a0\u00a0\u00a0 73392\u00a0\u00a0\u00a0 764192\u00a0\u00a0\u00a0\u00a0 22232\u00a0\u00a0\u00a0\u00a0\u00a0 2.83\u00a0\u00a0\u00a0\u00a0\u00a0 3592 44.1022
\n00:20:01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 107480\u00a0\u00a0\u00a0 298132\u00a0\u00a0\u00a0\u00a0 73.50\u00a0\u00a0\u00a0\u00a0 43556\u00a0\u00a0\u00a0\u00a0 73404\u00a0\u00a0\u00a0 764192\u00a0\u00a0\u00a0\u00a0 22232\u00a0\u00a0\u00a0\u00a0\u00a0 2.83\u00a0\u00a0\u00a0\u00a0\u00a0 3592 44.6663
\n00:30:01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 107328\u00a0\u00a0\u00a0 298284\u00a0\u00a0\u00a0\u00a0 73.54\u00a0\u00a0\u00a0\u00a0 43668\u00a0\u00a0\u00a0\u00a0 73404\u00a0\u00a0\u00a0 764192\u00a0\u00a0\u00a0\u00a0 22232\u00a0\u00a0\u00a0\u00a0\u00a0 2.83\u00a0\u00a0\u00a0\u00a0\u00a0 3592 44.6762<\/p>\n
Showing the \u2018real\u2019 memory usage in a presentable format, top and tailing the results:<\/p>\n
(unset LANG ;sar\u00a0 -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6); \\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($1″\u00a0\u00a0\u00a0 –\u00a0 “$4” – “$11)}’| head -1;\\
\necho “Time\u00a0\u00a0\u00a0\u00a0 – Real memory used %”; (unset LANG ;sar\u00a0 -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);\\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($1″ – “$11)}’| tail -10<\/p>\n
Example:<\/p>\n
(unset LANG ;sar\u00a0 -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6); \\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($1”\u00a0\u00a0\u00a0 –\u00a0 “$4” – “$11)}’| head -1;\\
\necho “Time\u00a0\u00a0\u00a0\u00a0 – Real memory used %”; (unset LANG ;sar\u00a0 -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);\\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($1″ – “$11)}’| tail -10<\/p>\n
Linux\u00a0\u00a0\u00a0 –\u00a0 05\/31\/10 –
\nTime\u00a0\u00a0\u00a0\u00a0 – Real memory used %
\n19:50:01 – 86.6651
\n20:00:01 – 87.8406
\n20:10:01 – 88.1177
\n20:20:01 – 87.031
\n20:30:01 – 87.315
\n20:40:01 – 89.1699
\n20:50:01 – 89.4323
\n21:00:01 – 89.0723
\n21:10:01 – 90.3524
\nAverage: – 45.4244<\/p>\n
The below will give an hourly snapshot of the memory usage for every day that there is a sar log for, in reverse date order:<\/p>\n
for i in $(ls \/var\/log\/sa\/ | grep -v sar);\\
\ndo (unset LANG ;sar\u00a0 -f \/var\/log\/sa\/$i -r) | awk ‘$3~\/[0-9]\/{total=$3+$2;\\
\nusedbc=$3-($5+$6); pc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’\\
\n| awk ‘{print ($1” – “$4” – “$11)}’| head -1 | grep -v “memused”; echo “Time\u00a0\u00a0\u00a0\u00a0 – Real memory used %”;\\
\n(unset LANG ;sar\u00a0 -r\u00a0 -f \/var\/log\/sa\/$i) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);pc_used=(100*usedbc)\/total;\\
\nprint $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($1″ – “$11)}’| grep “00:01” | grep -v “memused”; echo; done<\/p>\n
Example:<\/p>\n
[root@influencd ~]$\u00a0 for i in $(ls -t \/var\/log\/sa\/ | grep -v sar);\\
\ndo (unset LANG ;sar\u00a0 -f \/var\/log\/sa\/$i -r) | awk ‘$3~\/[0-9]\/{total=$3+$2;\\
\nusedbc=$3-($5+$6); pc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’\\
\n| awk ‘{print ($1″ – “$4” – “$11)}’| head -1 | grep -v “memused”; echo “Time\u00a0\u00a0\u00a0\u00a0 – Real memory used %”;\\
\n(unset LANG ;sar\u00a0 -r\u00a0 -f \/var\/log\/sa\/$i) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);pc_used=(100*usedbc)\/total;\\
\nprint $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($1″ – “$11)}’| grep “00:01” | grep -v “memused”; echo; done<\/p>\n
Linux – 05\/24\/10 –
\nTime\u00a0\u00a0\u00a0\u00a0 – Real memory used %
\n00:00:01 –
\n01:00:01 – 89.3317
\n02:00:01 – 88.9066
\n03:00:01 – 88.5102
\n[snip]
\nLinux – 05\/23\/10 –
\nTime\u00a0\u00a0\u00a0\u00a0 – Real memory used %
\n00:00:01 –
\n01:00:01 – 49.6731
\n02:00:01 – 49.1317
\n[etc etc]<\/p>\n
The below uses the day\u2019s average from the sar information, and presents it for each day that there\u2019s a log:<\/p>\n
echo “Real memory used %”;\\
\nfor i in $(ls \/var\/log\/sa\/ | grep -v sar); do (unset LANG ;sar\u00a0 -f \/var\/log\/sa\/$i -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; \\
\nusedbc=$3-($5+$6); pc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($4)}’\\
\n| head -1 | grep -v “memused” ;\\
\n(unset LANG ;sar\u00a0 -r\u00a0 -f \/var\/log\/sa\/$i) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);\\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print (”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 “$11)}’| tail -1;done<\/p>\n
Example:<\/p>\n
echo “Real memory used %”;\\
\nfor i in $(ls \/var\/log\/sa\/ | grep -v sar); do (unset LANG ;sar\u00a0 -f \/var\/log\/sa\/$i -r) | awk ‘$3~\/[0-9]\/{total=$3+$2; \\
\nusedbc=$3-($5+$6); pc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print ($4)}’\\
\n| head -1 | grep -v “memused” ;\\
\n(unset LANG ;sar\u00a0 -r\u00a0 -f \/var\/log\/sa\/$i) | awk ‘$3~\/[0-9]\/{total=$3+$2; usedbc=$3-($5+$6);\\
\npc_used=(100*usedbc)\/total;print $0,pc_used} $3!~\/[0-9]\/{print $0}’ | awk ‘{print (”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 “$11)}’| tail -1;done<\/p>\n
Real memory used %
\n05\/23\/10
\n49.2444
\n05\/24\/10
\n40.8514
\n05\/25\/10
\n43.1346
\n05\/26\/10
\n50.288
\n05\/27\/10
\n60.299
\n05\/28\/10
\n65.9872
\n05\/29\/10
\n70.6873
\n05\/30\/10
\n40.3156
\n05\/31\/10
\n45.7713<\/p>\n
In contrast if we compare the \u2018dumb\u2019 memory usage to the example above, you can see some pretty major differences in terms of the value:<\/p>\n
echo ”\u00a0\u00a0\u00a0\u00a0 Memory used %”; for i in $(ls \/var\/log\/sa\/ | grep -v sar); do echo $i ;\\
\nsar\u00a0 -r -f \/var\/log\/sa\/$i | tail -1 | awk ‘{print ($1″ – “$4)}’; done<\/p>\n
Example:<\/p>\n
echo ”\u00a0\u00a0\u00a0\u00a0 Memory used %”; for i in $(ls \/var\/log\/sa\/ | grep -v sar); do echo $i ;\\
\nsar\u00a0 -r -f \/var\/log\/sa\/$i | tail -1 | awk ‘{print ($1″ – “$4)}’; done<\/p>\n
Memory used %
\nsa23
\nAverage: – 70.35
\nsa24
\nAverage: – 78.06
\nsa25
\nAverage: – 94.58
\nsa26
\nAverage: – 92.61
\nsa27
\nAverage: – 89.86
\nsa28
\nAverage: – 93.69
\nsa29
\nAverage: – 97.31
\nsa30
\nAverage: – 65.48
\nsa31
\nAverage: – 75.65<\/p>\n
\u00a0Sar… CPU<\/strong><\/p>\n
 <\/p>\n
Cpu information:<\/p>\n
Display \u2018Processor Queue Length\u2019 information from the last 15 intervals in a presentable format:<\/p>\n
sar -q | head -3; sar -q | tail -n15<\/p>\n
Example:<\/p>\n
sar -q | head -3; sar -q | tail -n15
\nLinux 2.6.xx (influencd.co.uk)\u00a0\u00a0\u00a0\u00a0 05\/31\/2010
\n12:00:01 AM\u00a0\u00a0 runq-sz\u00a0 plist-sz\u00a0\u00a0 ldavg-1\u00a0\u00a0 ldavg-5\u00a0 ldavg-15
\n04:30:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 104\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n04:40:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 105\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n04:50:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n05:00:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n05:10:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n05:20:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n05:30:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n05:40:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n05:50:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n06:00:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 97\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n06:10:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 98\u00a0\u00a0\u00a0\u00a0\u00a0 0.07\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n06:20:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 109\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\n06:30:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 106\u00a0\u00a0\u00a0\u00a0\u00a0 0.13\u00a0\u00a0\u00a0\u00a0\u00a0 0.03\u00a0\u00a0\u00a0\u00a0\u00a0 0.01
\n06:40:01 PM\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 110\u00a0\u00a0\u00a0\u00a0\u00a0 0.07\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.00
\nAverage:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 98\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00<\/p>\n
Display general CPU stats from the last 15 intervals in a presentable format:<\/p>\n
sar | head -3; sar | tail -n15<\/p>\n
Example:<\/p>\n
sar | head -3; sar | tail -n15
\nLinux 2.6.xx (influencd.co.uk)\u00a0\u00a0\u00a0\u00a0 05\/31\/2010<\/p>\n
12:00:01 AM\u00a0\u00a0\u00a0\u00a0 CPU\u00a0\u00a0\u00a0\u00a0 %user\u00a0\u00a0\u00a0\u00a0 %nice\u00a0\u00a0 %system\u00a0\u00a0 %iowait\u00a0\u00a0\u00a0 %steal\u00a0\u00a0\u00a0\u00a0 %idle
\n04:30:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.98
\n04:40:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.03\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.95
\n04:50:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.95
\n05:00:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.98
\n05:10:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.98
\n05:20:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.98
\n05:30:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.99
\n05:40:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.99
\n05:50:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.99
\n06:00:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.98
\n06:10:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.03\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.94
\n06:20:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.17\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.21\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0 99.59
\n06:30:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 1.09\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.06\u00a0\u00a0\u00a0\u00a0\u00a0 0.34\u00a0\u00a0\u00a0\u00a0\u00a0 0.03\u00a0\u00a0\u00a0\u00a0 98.48
\n06:40:01 PM\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.35\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.02\u00a0\u00a0\u00a0\u00a0\u00a0 0.15\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0 99.47
\nAverage:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 all\u00a0\u00a0\u00a0\u00a0\u00a0 0.03\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0\u00a0 0.01\u00a0\u00a0\u00a0\u00a0\u00a0 0.05\u00a0\u00a0\u00a0\u00a0\u00a0 0.00\u00a0\u00a0\u00a0\u00a0 99.92<\/p>\n
Presentable CPU idle percentage, for the last 15 intervals:<\/p>\n
unset LANG;date;echo “CPU idle\u00a0 %”; sar | tail -20| awk ‘{print ($1″ “$2” – “$8)}’<\/p>\n
Example:<\/p>\n
unset LANG;date;echo “CPU idle\u00a0 %”; sar | tail -20| awk ‘{print ($1″ “$2” – “$8)}’
\nMon May 31 19:09:53 GMT 2010
\nCPU idle\u00a0 %
\n16:00:01 all – 99.49
\n16:10:01 all – 99.97
\n16:20:02 all – 99.98
\n16:30:01 all – 99.98
\n16:40:01 all – 99.95
\n16:50:01 all – 99.95
\n17:00:01 all – 99.98
\n17:10:01 all – 99.98
\n17:20:01 all – 99.98
\n17:30:01 all – 99.99
\n17:40:01 all – 99.99
\n17:50:01 all – 99.99
\n18:00:01 all – 99.98
\n18:10:01 all – 99.94
\n18:20:01 all – 99.59
\n18:30:01 all – 98.48
\n18:40:01 all – 99.47
\n18:50:01 all – 99.80
\n19:00:01 all – 99.86
\nAverage: all – 99.92<\/p>\n
CPU Idle average for each day available in the Sar logs:<\/p>\n
echo “Average CPU idle\u00a0 %”; for i in $(ls \/var\/log\/sa\/ | grep -v sar); \\
\ndo ll \/var\/log\/sa\/$i | awk ‘{print ($6,$7)}’ ;\\
\nsar -f \/var\/log\/sa\/$i | tail -1 | awk ‘{print (”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 “$7)}’; done<\/p>\n
Example:<\/p>\n
echo “Average CPU idle\u00a0 %”; for i in $(ls \/var\/log\/sa\/ | grep -v sar); \\
\ndo ll \/var\/log\/sa\/$i | awk ‘{print ($6,$7)}’ ;\\
\nsar -f \/var\/log\/sa\/$i | tail -1 | awk ‘{print (”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 “$7)}’; done
\nAverage CPU idle\u00a0 %
\n2010-05-23 23:50
\n0.00
\n2010-05-24 23:50
\n0.00
\n2010-05-25 23:50
\n0.00
\n2010-05-26 23:50
\n0.00
\n2010-05-27 23:50
\n0.00
\n2010-05-28 23:50
\n0.01
\n2010-05-29 23:50
\n0.00
\n2010-05-30 23:50
\n0.00
\n2010-05-31 19:00
\n0.00<\/p>\n
Average processor queue length for every day available in the sar logs:<\/p>\n
echo “Average Processor Queue length”; for i in $(ls \/var\/log\/sa\/ | grep -v sar);\\
\ndo ll \/var\/log\/sa\/$i | awk ‘{print ($6,$7)}’ ; \\
\nsar -q -f \/var\/log\/sa\/$i | tail -1 | awk ‘{print (”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 “$6)}’; done<\/p>\n
Example:
\necho “Average Processor Queue length”; for i in $(ls \/var\/log\/sa\/ | grep -v sar);\\
\ndo ll \/var\/log\/sa\/$i | awk ‘{print ($6,$7)}’ ; \\
\nsar -q -f \/var\/log\/sa\/$i | tail -1 | awk ‘{print (”\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 “$6)}’; done
\nAverage Processor Queue length
\n2010-05-23 23:50
\n0.00
\n2010-05-24 23:50
\n0.00
\n2010-05-25 23:50
\n0.00
\n2010-05-26 23:50
\n0.00
\n2010-05-27 23:50
\n0.00
\n2010-05-28 23:50
\n0.00
\n2010-05-29 23:50
\n0.00
\n2010-05-30 23:50
\n0.00
\n2010-05-31 20:10
\n0.00<\/p>\n
Show CPU processor queue length use by hourly snapshot, for every day in the last month:<\/p>\n
date;echo;echo “Processor Queue Length (15m)”;echo; for i in $(ls \/var\/log\/sa\/ | grep -v sar);\\
\ndo ll \/var\/log\/sa\/$i | awk ‘{print ($6,$7)}’;\\
\nsar -q -f \/var\/log\/sa\/$i | grep “:00:” | awk ‘{print ($1,$2″ – “$7)}’; echo; done<\/p>\n
Example:<\/p>\n
[root@influencd ~]# date;echo;echo “Processor Queue Length (15m)”;echo; for i in $(ls \/var\/log\/sa\/ | grep -v sar);\\
\ndo ll \/var\/log\/sa\/$i | awk ‘{print ($6,$7)}’;\\
\nsar -q -f \/var\/log\/sa\/$i | grep “:00:” | awk ‘{print ($1,$2″ – “$7)}’; echo; done
\nMon May 31 19:02:30 GMT 2010
\nProcessor Queue Length (15m)<\/p>\n
2010-05-23 23:5012:00:01 AM – ldavg-15
\n01:00:01 AM – 0.00
\n02:00:01 AM – 0.00
\n03:00:01 AM – 0.00
\n[Snip]
\n2010-05-24 23:50
\n12:00:01 AM – ldavg-15
\n01:00:01 AM – 0.00
\n02:00:01 AM – 0.00
\n03:00:01 AM – 0.00
\n[etc etc]<\/p>\n
Hourly Processor queue length with 15\/m averages:<\/p>\n
sar -q | grep 00:01| awk ‘{print ($1” “$2” – “$7)}’|head -3;\\
\nsar -q |grep 00:01| awk ‘{print ($1,$2” – “$7)}’| tail -n15<\/p>\n
Example:<\/p>\n
sar -q | grep 00:01| awk ‘{print ($1” “$2” – “$7)}’|head -3;\\
\nsar -q |grep 00:01| awk ‘{print ($1,$2” – “$7)}’| tail -n15
\n12:00:01 AM – ldavg-15
\n01:00:01 AM – 0.00
\n02:00:01 AM – 0.00
\n04:00:01 AM – 0.00
\n05:00:01 AM – 0.00
\n06:00:01 AM – 0.00
\n07:00:01 AM – 0.00
\n08:00:01 AM – 0.00
\n09:00:01 AM – 0.00
\n10:00:01 AM – 0.00
\n11:00:01 AM – 0.00
\n12:00:01 PM – 0.00
\n02:00:01 PM – 0.00
\n03:00:01 PM – 0.00
\n04:00:01 PM – 0.00
\n05:00:01 PM – 0.00
\n06:00:01 PM – 0.00
\n07:00:01 PM – 0.00<\/p>\n","protected":false},"excerpt":{"rendered":"
 <\/p>\n
 Sar… Networking echo “Rcvd Bytes – Time”;\\ (unset LANG; sar -n DEV) | grep eth0 | awk ‘{print ($5″ – “$1)}’ | sort -nr | head -n5;\\ echo “Average: `sar -n DEV |grep eth0| tail -n1 | awk ‘{print ($5)}’`” <\/p>\n
Example:<\/p>\n
 $ echo “Rcvd Bytes – Time”;\\ (unset LANG; sar -n DEV) | grep […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/2976"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2976"}],"version-history":[{"count":4,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/2976\/revisions"}],"predecessor-version":[{"id":2980,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/2976\/revisions\/2980"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2976"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2976"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2976"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}