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From "Ian Blavins" <iblav...@temenos.com>
Subject RE: Question: Jmeter on multiple CPU machine
Date Thu, 08 Nov 2007 08:12:20 GMT
G'day

That will probably be the JVM doing garbage collection. Nothing much
happens while it is being done.


-----Original Message-----
From: Bo Yu [mailto:bo.bo.yu@gmail.com] 
Sent: 07 November 2007 18:38
To: jmeter-user@jakarta.apache.org
Subject: Question: Jmeter on multiple CPU machine

Hi,

I am running jmeter on a 4-CPU machine. The throughput is around 160
http transactions/sec. Every 50-100 seconds, jmeter is pausing for a
few seconds not sending out any packets. I relate this to the CPU
history below. I see that one CPU is 0% idle while other CPU is pretty
free. I tried jmeter GUI and command line, same result.

Your help is highly appreciated.

Thanks,
Bo

Linux 2.6.16.21-0.8-smp (PC13)        11/07/2007

12:39:01 PM     CPU     %user     %nice   %system   %iowait    %steal
%idle
12:39:04 PM     all     47.83      0.00      0.92      0.00      0.00
51.25
12:39:04 PM       0     83.67      0.00      0.67      0.00      0.00
15.67
12:39:04 PM       1      0.33      0.00      0.67      0.00      0.00
99.00
12:39:04 PM       2      8.33      0.00      1.33      0.00      0.00
90.33
12:39:04 PM       3     98.68      0.00      1.32      0.00      0.00
0.00
12:39:07 PM     all     47.21      0.00      0.58      0.00      0.00
52.21
12:39:07 PM       0     80.00      0.00      1.67      0.00      0.00
18.33
12:39:07 PM       1     51.50      0.00      0.33      0.00      0.00
48.17
12:39:07 PM       2      7.69      0.00      0.67      0.00      0.00
91.64
12:39:07 PM       3     49.33      0.00      0.00      0.00      0.00
50.67
12:39:10 PM     all     48.46      0.00      0.67      0.00      0.00
50.88
12:39:10 PM       0     78.60      0.00      2.01      0.00      0.00
19.40
12:39:10 PM       1    100.00      0.00      0.00      0.00      0.00
0.00
12:39:10 PM       2     14.33      0.00      0.67      0.00      0.00
85.00
12:39:10 PM       3      1.00      0.00      0.00      0.00      0.00
99.00
12:39:13 PM     all     47.83      0.00      0.58      0.00      0.00
51.59
12:39:13 PM       0     84.62      0.00      0.67      0.00      0.00
14.72
12:39:13 PM       1     90.30      0.00      0.67      0.00      0.00
9.03
12:39:13 PM       2      6.02      0.00      1.00      0.00      0.00
92.98
12:39:13 PM       3     10.33      0.00      0.00      0.00      0.00
89.67
12:39:16 PM     all     47.08      0.00      1.17      0.00      0.00
51.75
12:39:16 PM       0     80.27      0.00      1.34      0.00      0.00
18.39
12:39:16 PM       1     12.33      0.00      0.67      0.00      0.00
87.00
12:39:16 PM       2      8.00      0.00      1.67      0.00      0.00
90.33
12:39:16 PM       3     88.29      0.00      0.67      0.00      0.00
11.04
12:39:19 PM     all     47.58      0.00      0.92      0.08      0.00
51.42
12:39:19 PM       0     82.33      0.00      1.67      0.00      0.00
16.00
12:39:19 PM       1     16.94      0.00      0.66      0.33      0.00
82.06
12:39:19 PM       2      8.03      0.00      0.67      0.00      0.00
91.30
12:39:19 PM       3     82.67      0.00      1.00      0.00      0.00
16.33
12:39:22 PM     all     48.13      0.00      0.58      0.08      0.00
51.21
12:39:22 PM       0     83.00      0.00      0.67      0.00      0.00
16.33
12:39:22 PM       1      1.33      0.00      0.67      0.00      0.00
98.00
12:39:22 PM       2      8.70      0.00      0.67      0.00      0.00
90.64
12:39:22 PM       3     99.67      0.00      0.33      0.00      0.00
0.00
12:39:25 PM     all     47.91      0.00      0.67      0.00      0.00
51.42
12:39:25 PM       0     83.22      0.00      0.67      0.00      0.00
16.11
12:39:25 PM       1     89.63      0.00      0.67      0.00      0.00
9.70
12:39:25 PM       2      9.67      0.00      0.67      0.00      0.00
89.67
12:39:25 PM       3      9.93      0.00      0.33      0.00      0.00
89.74
12:39:28 PM     all     48.00      0.00      0.83      0.00      0.00
51.17
12:39:28 PM       0     72.00      0.00      1.67      0.00      0.00
26.33
12:39:28 PM       1     99.00      0.00      1.00      0.00      0.00
0.00
12:39:28 PM       2     20.67      0.00      0.67      0.00      0.00
78.67
12:39:28 PM       3      0.00      0.00      0.33      0.00      0.00
99.67
12:39:31 PM     all     47.92      0.00      0.83      0.00      0.00
51.25
12:39:31 PM       0     70.10      0.00      1.66      0.00      0.00
28.24
12:39:31 PM       1     99.00      0.00      1.00      0.00      0.00
0.00
12:39:31 PM       2     21.74      0.00      1.34      0.00      0.00
76.92
12:39:31 PM       3      0.33      0.00      0.00      0.00      0.00
99.67
12:39:34 PM     all     47.28      0.00      0.58      0.00      0.00
52.13
12:39:34 PM       0     82.27      0.00      0.00      0.00      0.00
17.73
12:39:34 PM       1     98.34      0.00      1.66      0.00      0.00
0.00
12:39:34 PM       2      8.05      0.00      0.67      0.00      0.00
91.28
12:39:34 PM       3      0.33      0.00      0.00      0.00      0.00
99.67
12:39:37 PM     all     41.95      0.00      0.58      0.00      0.00
57.46
12:39:37 PM       0     60.54      0.00      1.00      0.00      0.00
38.46
12:39:37 PM       1     99.67      0.00      0.33      0.00      0.00
0.00
12:39:37 PM       2      6.00      0.00      1.00      0.00      0.00
93.00
12:39:37 PM       3      1.33      0.00      0.33      0.00      0.00
98.34


01:01:49 PM     CPU     %user     %nice   %system   %iowait    %steal
%idle
01:01:52 PM     all     20.97      0.00      0.59      0.00      0.00
78.44
01:01:52 PM       0     77.59      0.00      1.67      0.00      0.00
20.74
01:01:52 PM       1      0.67      0.00      0.67      0.00      0.00
98.66
01:01:52 PM       2      2.33      0.00      0.33      0.00      0.00
97.34
01:01:52 PM       3      3.04      0.00      0.00      0.00      0.00
96.96

01:01:49 PM     IFACE   rxpck/s   txpck/s    rxkB/s    txkB/s
rxcmp/s   txcmp/s  rxmcst/s
01:01:52 PM        lo      4.01      4.01      0.37      0.37
0.00      0.00      0.00
01:01:52 PM      eth0      0.00      0.00      0.00      0.00
0.00      0.00      0.00
01:01:52 PM      eth1   1407.02   1457.19      0.00      0.00
0.00      0.00      0.00
01:01:52 PM      sit0      0.00      0.00      0.00      0.00
0.00      0.00      0.00

01:01:49 PM kbmemfree kbmemused  %memused kbbuffers  kbcached
kbswpfree kbswpused  %swpused  kbswpcad
01:01:52 PM  12772328   3669164     22.32    313820   1423500
16779884         0      0.00         0

01:01:49 PM    totsck    tcpsck    udpsck    rawsck   ip-frag    tcp-tw
01:01:52 PM       348        27        11         0         0      6137

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