Walter Lee

How to run wshang script to collect webservd runtime information

Wednesday Jun 24, 2009

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Posted at 02:17PM Jun 24, 2009 by Wing-Yip Walter Lee in Sun
Tags: file hung memory script supportfiles upload wshang

Simple script to download or get perfdump output into a file for later analysis for web 6.1

Friday Dec 12, 2008

Today, I found a need to run perfdump periodically in web server 6.1 SPx and download it into a single file with timestamps for later analysis. I can then check further on different number of performance numbers of this web server to see if any area to tune for better.

So, I followed the steps at 6.1 docs to enable perfdump,

http://docs.sun.com/app/docs/doc/820-5719/abyaq?l=en&a=view&q=perfdump

then I came across this great blog,

http://blogs.sun.com/elving/entry/perfdump_in_7_0

which tells how to do it in web 7 easily.

Inside, I also saw,

" (echo "GET /.perf";sleep 1 ) | telnet www.mysite.com 80 "

by
"Posted by
ttalex

on October 20, 2006 at 02:33 AM PDT"

So, I wrote up a simple script to try,

APPLE:/export/home0/case/7041xxxx-yyy-p1> cat get-perf-2s.ksh
#/usr/bin/ksh
while [ 1 ]
do
# 1st to print date timestamp
echo "=====================next perf dump======================="
date
# 2nd to get .perf
(echo "GET /.perf";sleep 1 ) | telnet apple.asia.sun.com 60103
# 3rd sleep 2s
sleep 2
done

Then, I chmod a+x and then

./get-perf-2s.ksh >> perf.txt

and control-c to stop it after a while,

then > cat perf.txt
=====================next perf dump=======================
Fri Dec 12 15:06:33 CST 2008
Trying 129.158.175.16...
Connected to apple.
Escape character is '^]'.
webservd pid: 19065

Sun ONE Web Server 6.1SP10 B09/04/2008 10:03 (SunOS DOMESTIC)

Server started Fri Dec 12 14:39:20 2008
Process 19065 started Fri Dec 12 14:39:20 2008

ConnectionQueue:
-----------------------------------------
Current/Peak/Limit Queue Length            0/1/4096
Total Connections Queued                   95
Average Queue Length (1, 5, 15 minutes)    0.00, 0.00, 0.00
Average Queueing Delay                     0.13 milliseconds

ListenSocket ls1:
------------------------
Address                   http://0.0.0.0:60103
Acceptor Threads          1
Default Virtual Server    https-sess

ListenSocket ls2:
------------------------
Address                   http://129.158.175.16:60104
Acceptor Threads          1
Default Virtual Server    land-vs1

KeepAliveInfo:
--------------------
KeepAliveCount        0/256
KeepAliveHits         7
KeepAliveFlushes      0
KeepAliveRefusals     0
KeepAliveTimeouts     3
KeepAliveTimeout      30 seconds

SessionCreationInfo:
------------------------
Active Sessions           1
Keep-Alive Sessions       0
Total Sessions Created    48/128

CacheInfo:
------------------
enabled             yes
CacheEntries        8/1024
Hit Ratio           108/214 ( 50.47%)
Maximum Age         30

Native pools:
----------------------------
NativePool:
Idle/Peak/Limit               1/1/128
Work Queue Length/Peak/Limit 0/0/0

Server DNS cache disabled

Async DNS disabled

Performance Counters:
------------------------------------------------
                           Average         Total      Percent

Total number of requests:                    101
Request processing time:    0.0019        0.1919

default-bucket (Default bucket)
Number of Requests:                          101    (100.00%)
Number of Invocations:                      1307    (100.00%)
Latency:                    0.0003        0.0272    ( 14.18%)
Function Processing Time:   0.0016        0.1647    ( 85.82%)
Total Response Time:        0.0019        0.1919    (100.00%)

Sessions:
----------------------------
Process Status     Function

19065    response   service-dump
=====================next perf dump=======================
Fri Dec 12 15:06:36 CST 2008
Trying 129.158.175.16...
Connected to apple.
Escape character is '^]'.
webservd pid: 19065

Sun ONE Web Server 6.1SP10 B09/04/2008 10:03 (SunOS DOMESTIC)

Server started Fri Dec 12 14:39:20 2008
Process 19065 started Fri Dec 12 14:39:20 2008

ConnectionQueue:
-----------------------------------------
Current/Peak/Limit Queue Length            0/1/4096
Total Connections Queued                   96
Average Queue Length (1, 5, 15 minutes)    0.00, 0.00, 0.00
Average Queueing Delay                     0.13 milliseconds

................. repeated itself................

======================================

So, hope this simple script can help capture the perfdump in web 6.1 .

However, it is still best to upgrade to web 7 to use the CLI there for perfdump (it will work in web 7 even when the webservd process hung, but not in web 6.1). Another good reason to upgraded to web 7.

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