1st.- CPU usage .- 12:31:54 PM CPU %user %nice %system %iowait %idle 12:31:56 PM all 28.62 0.00 0.50 0.12 70.75 12:31:56 PM 0 31.16 0.00 0.50 0.00 68.34 12:31:56 PM 1 22.11 0.00 0.50 0.00 77.39 12:31:56 PM 2 30.35 0.00 1.00 0.00 68.66 12:31:56 PM 3 30.00 0.00 0.50 1.00 68.50 12:31:56 PM CPU %user %nice %system %iowait %idle 12:31:58 PM all 31.09 0.12 0.75 0.00 68.04 12:31:58 PM 0 33.33 0.00 1.00 0.00 65.67 12:31:58 PM 1 29.70 0.50 0.00 0.00 69.80 12:31:58 PM 2 24.00 0.00 1.00 0.00 75.00 12:31:58 PM 3 38.00 0.00 0.50 0.00 61.50 12:31:58 PM CPU %user %nice %system %iowait %idle 12:32:00 PM all 29.00 0.00 0.38 0.38 70.25 12:32:00 PM 0 37.50 0.00 1.00 0.00 61.50 12:32:00 PM 1 20.60 0.00 0.50 0.00 78.89 12:32:00 PM 2 26.13 0.00 0.00 1.01 72.86 12:32:00 PM 3 31.34 0.00 0.50 0.00 68.16 12:32:00 PM CPU %user %nice %system %iowait %idle 12:32:02 PM all 28.00 0.00 0.25 0.00 71.75 12:32:02 PM 0 33.33 0.00 0.50 0.00 66.17 12:32:02 PM 1 34.33 0.00 0.50 0.00 65.17 12:32:02 PM 2 40.00 0.00 0.00 0.00 60.00 12:32:02 PM 3 5.00 0.00 0.00 0.00 95.00 12:32:02 PM CPU %user %nice %system %iowait %idle 12:32:04 PM all 28.80 0.00 0.37 0.00 70.82 12:32:04 PM 0 30.50 0.00 0.50 0.00 69.00 12:32:04 PM 1 28.64 0.00 0.00 0.00 71.36 12:32:04 PM 2 22.89 0.00 1.00 0.00 76.12 12:32:04 PM 3 32.66 0.00 0.00 0.00 67.34 Average: CPU %user %nice %system %iowait %idle Average: all 28.74 0.02 0.44 0.10 70.70 Average: 0 33.38 0.00 0.65 0.20 65.77 Average: 1 27.59 0.05 0.35 0.00 72.01 Average: 2 25.72 0.05 0.45 0.10 73.68 Average: 3 28.24 0.05 0.30 0.10 71.31
2.- About transactions.... 420KB.seg = 3360Kb/s = 3Mb/s ( so it is not a problem of network ). 3.- The only way to increase the trhoughput is to download the PermSize in JVM, and in this case I can download the CPU usage and after increase the trhoughput. But, I am never able to increase more than 25% of CPU... 4.- I will check if it is a limitation of OS, I am using RHEL4.5 2009/2/25 Thomas Johnson <[email protected]> > Hmm, just ignoring jconsole for a moment, what does your OS say about > its CPU usage? Does top, prstat, acitivity monitor, or task manager > show that your Java process is also using 25% CPU? Is that 25% > combined, or is that just User space, not counting time in Kernel > space? > > Once again, I'd just like to rule out a bottleneck at the network > level. Can you check how much bandwidth you're using, and compare it > to the amount of bandwidth that's available on your network? How large > are the transactions? 100tx/sec multiplied by (arbitrary) 100 > kilobytes per transaction is a full 10 MBps, which will easily > saturate a 100Mbps ethernet link. > > Also, does changing the thread count do anything to your Transaction > rate? Do you still only get 100 tx/sec if you increase the thread > count? What is the impact on your CPU usage when you double the thread > countL > > Also, do you know if your system policy is limiting your resource > usage to a given percentage? > > On Wed, Feb 25, 2009 at 11:46 AM, Toni Menendez Lopez > <[email protected]> wrote: > > I am testing a Huge platform that is able to get like 5000reqxseg, and > now I > > am only sending 100reqxseg, so my Load is doing nothing to the Tested > > server. > > > > About logs, I am not writing any logs in my jmeter... > > > > May main question, and I am not able to find a solution, and I am > browsing > > in google is why with jconsole the CPU of the JVM is not able to go > further > > than 25% even when I have much free CPU. > > > > Toni. > > > > 2009/2/25 Thomas Johnson <[email protected]> > > > >> Just curious -- what kind of system are you testing? > >> > >> Are you doing tests against a website? You might be hitting bandwidth > >> limitations, meaning that the test machine's CPU has nothing to do > >> while it waits for the network. If you are running the server on the > >> same system, the server might be eating the other 75% of the CPU. > >> > >> Also, if you are logging data, what kind of device are you writing > >> logs to? Is it a local hard drive, or a networked drive? > >> > >> On Wed, Feb 25, 2009 at 11:17 AM, Toni Menendez Lopez > >> <[email protected]> wrote: > >> > OK, I have a look to the links and still thinks that I don´t > underestand > >> > quite well, I explain to you : > >> > > >> > After lloking in the CPU´s in OS I can see that the threads are spread > in > >> > all CPU´s look attachment ( CPU.jpg ). > >> > > >> > After this I tried to check the JVM working mode and I go to jconsole, > >> and > >> > now in this case I am not able to get more than 25% of CPU, look the > >> > graph... (jconsole.jpg) > >> > > >> > Do you have any idea why the JVM of the jmeter is not able to go > further > >> > than 25% ? > >> > > >> > > >> > Toni. > >> > > >> > > >> > > >> > > >> > 2009/2/25 <[email protected]> > >> > > >> > Hello Toni, I think Sebb et. al. was trying to get you to understand > the > >> >> complexities of the JVM (see link). Even ANSI C daemons that clone > >> >> themselves and spawn off all new OS processes don't really get > involved > >> with > >> >> hardware CPUs as a plural concern. > >> >> > >> >> http://www.mindprod.com/jgloss/jvm.html > >> >> > >> >> > >> >> Secondly, if you are concerned with JMeter and performance testing > and > >> the > >> >> performance of JMeter itself during serious application testing take > a > >> look > >> >> at this link: > >> >> > >> >> > >> >> > >> > http://jakarta.apache.org/jmeter/usermanual/jmeter_distributed_testing_step_by_step.pdf > >> >> > >> >> Toni Menendez Lopez wrote .. > >> >> > But normal behaviour of Jmeter if I don´t change anything , does > not > >> >> permit > >> >> > multi-cpu, isn´t it ? > >> >> > > >> >> > Toni. > >> >> > > >> >> > 2009/2/24 Toni Menendez Lopez <[email protected]> > >> >> > > >> >> > > Just any clue where to find ? > >> >> > > > >> >> > > Toni. > >> >> > > > >> >> > > 2009/2/24 sebb <[email protected]> > >> >> > > > >> >> > >> Check the JVM documentation? > >> >> > >> > >> >> > >> On 24/02/2009, Toni Menendez Lopez <[email protected]> wrote: > >> >> > >> > Which parameter I can add to JVM to use more than 1 CPU ? > >> >> > >> > > >> >> > >> > Toni. > >> >> > >> > > >> >> > >> > 2009/2/24 sebb <[email protected]> > >> >> > >> > > >> >> > >> > > >> >> > >> > > On 24/02/2009, Toni Menendez Lopez <[email protected]> > >> wrote: > >> >> > >> > > > Hello, every body.... > >> >> > >> > > > > >> >> > >> > > > Just one question, Is it possible to send jmeter to work > in > >> >> > >> multiple > >> >> > >> > > CPUs as > >> >> > >> > > > a single process, or I have to send a process for each > CPU > >> ? > >> >> > >> > > > >> >> > >> > > JMeter is pure Java, and will use as many CPUs as the JVM > may > >> >> choose > >> >> > >> to > >> >> > >> > > use. > >> >> > >> > > > >> >> > >> > > > > >> >> > >> > > > Toni. > >> >> > >> > > > > >> >> > >> > > > >> >> > >> > > >> >> > >> > > > >> >> --------------------------------------------------------------------- > >> >> > >> > > To unsubscribe, e-mail: > >> >> [email protected] > >> >> > >> > > For additional commands, e-mail: > >> >> [email protected] > >> >> > >> > > > >> >> > >> > > > >> >> > >> > > >> >> > >> > >> >> > >> > >> --------------------------------------------------------------------- > >> >> > >> To unsubscribe, e-mail: > [email protected] > >> >> > >> For additional commands, e-mail: > >> [email protected] > >> >> > >> > >> >> > >> > >> >> > > > >> >> > >> >> > >> >> --------------------------------------------------------------------- > >> >> To unsubscribe, e-mail: [email protected] > >> >> For additional commands, e-mail: [email protected] > >> >> > >> > > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [email protected] > >> For additional commands, e-mail: [email protected] > >> > >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
