Solaris 10 - script creating huge spike in Kernel CPU
I'm running on Solaris 10, and I have a script that's running on several machines. Basically, what it's doing is:
* tail -f | grep one or more log files into a temp file
* Every minute or so, copy that temp file to a second temp and zero the first
* Sed through the 2nd temp to pull out a user ID
* grep through the file for occurences of that ID with some other text (the other text is in a local file that I read from in a loop)
* Output a text record into a log file that basically consists of the User, that text, and a count.
Another server then does a tail -f of the output log file.
The user cpu on this script is small... on the order of 2-4% depending on what box I'm running it on. But the crazy thing is that on my test box, with one input data stream, as soon as I start running the script, my kernal % jumps from like 1% to 60%.
As far as I can see, the issue is NOT with disk i/o wait, or with memory (still half free and very very small paging values).
I've got a domain running on a few boards of a 25k. I'm seeing very high kernel cpu usage in top and cant' quite explain it. System runs a large number of smallish Oracle 10g2 databases (30), used mainly for development.
load average: 36.63, 36.68, 37.42
2489 processes: 2452 sleeping, 21... (0 Replies)
Hello Friends,
On one of my Solaris 10 box, CPU usage shows 100% using "sar", "vmstat". However, it has 4 CPUs and prstat and glance are not showing enough processes to justify high CPU utilization.
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$ prstat -a
... (4 Replies)
Hi,
Does anyone know how to check which process has been used the most CPU between certain time period?
say I have noticed CPU spike happend between 1:00 to 1:30
now it is 3:00 o'clock already. Is there anyway to find out what process/PID use the most CPU then?
Thanks a lot (3 Replies)
Hello all. I've built a SAMP server on Solaris 10 using Apache 2.2.9 and PHP 5.2.6
For the most part everything seems to be working except when I post form data, Apache causes the CPU to max out. Sometimes the script will complete about 40 seconds later. Other times I have to stop Apache to get... (4 Replies)
i'm trying to find a way to monitor the CPU/Memory status of a solaris station using vmstat. I like to write a small script to periodically run vmstat and store the output. Can anyone show me how (preferrably in C++ if possible)? Thanks in advance. (6 Replies)
Hi All,
I have a
uname -a
Linux caws101arop 2.6.9-67.0.20.ELsmp #1 SMP Wed Jun 18 12:35:02 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
And I'm having lots of problem especially when the web server got new two additional website. Before the memory was just 12G but we upgraded it to 65G.
Do... (1 Reply)
I'm using Linux-2.6.14. My application is having one kernel module of large size(approx 8MB), insmoding of that kernel module is taking pretty much time(approx 8Mins). Is there a way to reduce the insmod time? I tried even by modprobe also. (0 Replies)
Folks,
I need to find out from the system logs ( or elsewhere ) if the CPU utilization reached say 90% an hour ago from now.
Is there a way out. (2 Replies)
ok so I just installed fedora core 6 on my dell inspiron 700m and I go to boot into linux and I get this error. Has anyone seen this before?
I also had XP Pro and Vista installed on this pc prior to putting fedora core 6 on the machine. I'm trying to setup a triple boot system.
Please Help... (2 Replies)
I've noticed that the prngd process seems to consume lots of CPU every now and again on our Sparc Solaris 8 machines - I've done a google search and others too have experienced this. I have yet to find a reason or a fix. Does anyone here know why this happens? Once I stop ssh and restart it prngd... (1 Reply)
