Keeping VoIP calls up while high IP Input process cpu time
I was having a problem with a router that I'm not sure how's the best
way to prevent it from happening again. I have a MC3810 running 12.3,
and it provides a PRI and NAT through a T1 data connection.
One of the computers running through the NAT got a virus and started
opening up thousands of connections to port 443 per second. This caused
the IP Input process to max out the CPU time, and as a side effect VoIP
calls couldn't go through.
I fixed the problem with an access list so that port won't be a problem
in the future, however, I'm sure at some time so...cpu time usage of multi threaded process and single threaded process.
these are 2 programs for matrix multiplication. :-
1st one is implemented using multiple threading and 2nd using single
threading. Process' Cpu time for both comes out to be same ..... but
should be less for multi threaded process. Plzz help why Cpu time is
program1 using multiple threading :-
// decleared globally so can be used by all threads through resorce
shareing and dont get destroyed on exit of threads...system idle process high cpu usage
I was having problems with 100% cpu usage & at the Microsoft site they
specified to install the patch to overcome the problem & i did. Now
System idle Process shows 100% cpu usage. Please give the solution at
...High (80-90%) CPU usage on W98
I have a 1989 Dell Dimension XPS T500MHz w/ 512MB RAM, running Win98. Recently, the
system has been extremely processor bound, as demonstraded by System
Monitor (Kernel Proc Usage tends to "redline"). I have been unable to
identify the culprit, but a CTL-ALT-DEL does shows tasks by the name
of "ccd", "cfd" and "mdm". When I kill these tasks (usually the are
"not responding"), the perfromance does improve. I have searched high
and low in documentation and on the net, trying to identify what these
tasks are. They do NOT appear in the mscon...process memory usage, CPU Time by given
How ACE allows to access a process memory usage, CPU Time by given
...How do I get percentage CPU usage of processes for a specified time interval?
How do I get percentage CPU usage of processes for a specified time
I'm wish to write a script, part of which displays the top 10
processes by percentage processor usage over a 30 second interval. I
know "topas" can show this, but I need to be able to process the
information in a script. The output from "ps" doesn't seem to give the
Can anybody give me some pointers as to how this can be done?
Adrian Davis wrote:
> How do I get percentage CPU usage of processes for a specified time
&g...How can a process consume kernel CPU time without making system calls?
I'm trying to track down what is going on with a particular rogue
application process on a customer site running AIX 4.3.3.
Under defined circumstances, the application process can be fired up and
while seemingly doing nothing will soar to the top of the topas list of jobs
whilst taking the system from largely idle to heavily CPU bound.
When this happens, it is always the kernel histogram that goes highest, and
if I time(1) the process from start to when I break it out of the resource
hogging section I get output like this:
usr:5.41 sys:19.53 total:24.94 elapsed:0m31.11s
It seemed...Comcast cable internet -> CPU mostly 100% (tool to show per-process usage)?
Ever since I got my High Speed Digital Internet access from Comcast/Verizon,
my CPU runs mostly at 100% and I frequently have long (5-30 second) lockups
for no reason (sometimes coincides with changing window focus). I am
running Windows 98 and the crummy taks process program (Ctl-Alt-Del) does
not show CPU usage per-process so I can't tell what is hogging it all. Is
there a good freeware/trialware performance monitor that will show this for
W98? Anybody get Virzon/Comcast and then figure this out? Is there a
better place to post?
> Ever since I got my High Speed Digital ...High SYS cpu usage and high intr in mpstat
I'am having a high SYS cpu usage on one of my servers.
These are the details.
SunOS 5.8 Generic_117350-21 sun4u sparc SUNW,Sun-Fire-280R
0 on-line since 10/23/06 10:59:17
1 on-line since 10/23/06 10:59:18
12:43:04 %usr %sys %wio %idle
12:43:05 0 51 1 48
12:43:06 0 50 0 50
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys
0 0 0 318 610 509 0 0 0 33 0 0 0 100
1 1 0 2 497908 298 502 8 0 32 0 360 0...High Execution Time--Low CPU time for statements
Scenario: new functionality was recently deployed in a 3-tier business
application. Since deployment, CPU use has shot up to very high
Using event monitors to try to track down the culprits hasn't fingered
any bad query in particular who's hogging CPU. One interesting anomaly
is that there is a single type of query that averages 70 seconds of
real time (with highs of 100-300 seconds) while expending zero seconds
of CPU. The query in question takes the form "SELECT * FROM TABLE
WHERE COLUMN = 'VALUE'" where the value is the first element in the
prima...Poor Performance: High Real Time/CPU Time Ratio
My database is suffering from poor performance of late. Reports that
used to run in a reasonable time, now take a while. The explain output
show that the query is fully indexed, and the statistics are up to
date. Using a statement monitor I was able to determine that a
particular query took 545 seconds of real time to run, yet only 19
seconds of CPU. According to my system monitoring tools, I had plenty
of idle CPU cycles and free memory laying around, and I/O was normal,
so the box was not at capacity during the execution of the query. I
didn't see any query waiting on locks using...High CPU usage
Recently I was having trouble working with SWX2005. When I login; It
works fine for 10-15 min but after that even if I just try to change
the diamension or try to zoom in the CPU usage zooms to 100% and
remains there for a while.
If any of u guys have experienced such a problem and figured out the
Can u please post it here.
Assuming that you are using xp or something close, what does your physical
memory and commit charge numbers (from task manager performance tab) look
like during a session in which you are experiencing the high cpu useage?
&quo...Truss usage on Solaris
Hi all, I am new to solaris and I would like to know how to use truss
command to analyze or debug processes. Please help me from where I can
get detailed information regarding TRUSS cmd usage.
Thanks in advance.
> Hi all, I am new to solaris and I would like to know how to use truss
> command to analyze or debug processes. Please help me from where I can
> get detailed information regarding TRUSS cmd usage.
There isn't a TRUSS command, but truss is well documented by its man page.
On Sat, 10 May 2008 20:03:55 +1200, Ian Collins <ian-news@h...cpu time high
we are using db2 udb v8.1 on windows 64bit, somehow , there are two
database being used under one instance, somehow, service db2sysc CPU
takes up to 70%, but the memory use about 1/3 only. and the
application is slow down. so what kind of process is taking the cpu ?
Are you running a complex query? Can you use the db2 explain facilities
to see what's happening (or the snapshot monitor)?
> we are using db2 udb v8.1 on windows 64bit, somehow , there are two
> database being used under one instance, somehow, service db2sysc CPU
> tak...High CPU usage
We recently migrated from Oracle 220.127.116.11(Solaris 9) standalone to 2
node Oracle 10.2.0.2 RAC(solaris 9). Previously database used to run on
4*900MHZ CPUs and now it runs on 2*4*1.2GHZ CPUs. After this migration
cpu usage on both nodes are very high. In the range of 70-80%.
(Beforein 9i it used to be less then 20%). The thing which bothers me
is out of that 70% CPU usage, oracle is using about 40% and Kernel is
using about 30%. I bumped SGA and PGA on both nodes and usage is still
same. Any pointers on what to look would be appreciated.
> We recently migrated from Ora...High CPU Usage
I have a bind 9.2.2 and my cpu usage arrives at 99% in named proccess.
I restart my NAMED and it's work fine.
But it's work fine around 2 days, and NAMED proccess arrives to 99% again.
Anyone help me?
...High cpu usage
:( My pc has developed a high cpu usage problem, I have scanned for
spyware trojans and everything i can think off, no joy. The only time
it drops is when i take the cable modem offline and sometimes when I
reboot, can anyone help with this as all the other things I have
tried have so far failed......................Ronnie
> :( My pc has developed a high cpu usage problem, I have scanned for
> spyware trojans and everything i can think off, no joy. The only time
> it drops is when i take the cable modem offline and sometimes when I
> reboot, can anyone h...High CPU usage
When the Solaris box rebooted, when it comes up without IDS up the CPU
idle is around 90% and System CPU usage is around 10-20%.
Then once the IDS engine is started CPU usage suddenly increased to
80-90% System Idle becomes 20-5%. At this point only IDS is up without
any client connections.
IDS is 11.10.FC3W1
Content-Type: text/plain; charset=ISO-8859-1
Post your hardware configuration (number, speed, and type of CPUs, system
model, amount of memory, etc.), the contents of your ONCONFIG file and
sqlhosts file, and the output from:
...Show CPU and process
What is the equivalent for prstat and top under Unix AIX ?
Thanks a lot
I've used the command below:
The topas command enables you to perform broad-spectrum performance
> Hi All,
> What is the equivalent for prstat and top under Unix AIX ?
> Thanks a lot
> Besr Regards
> I've used the command below:
> The topas command enables you to perform broad-spectrum performance
> topas -D
> ...time in milliseconds by calling time.time()
I am trying to measure some system response time by using the time.time
() or time.clock() in my script. However, the numbers I get are in
10s of milliseconds.
1248481670.34 #from time.time()
0.08 #from time.clock()
That won't work for me, since the response time may be only a few
My environment is Solaris 10 with Python 2.4.4 (#7, Feb 9 2007,
SunOS 5.10 Generic_137112-07 i86pc i386 i86pc
The tricky thing is, if I run the python interpreter and import the
time module, I can get a time floating number in better precision by
cal...High CPU usage
Hi, if I log in to my remote machine I see a CPU usage of 70-98%. This
seems to be too much!? What can cause that?
alternatives news netzwerk
...process cpu usage
if a process is consuming 100% cpu does it mean the
other processes will not get share of cpu at all, if no
how does the os calculates if process has used up it's
share of cpu.
sinbad <email@example.com> wrote:
> if a process is consuming 100% cpu does it mean the
> other processes will not get share of cpu at all
> if no how does the os calculates if process has used up it's share of
Timesharing, see <https://en.wikipedia.org/wiki/Time-sharing>
“Isabell steht auf Cocktailschirmchen, Analverkehr und H...Process Scehduling in Unix version Sun Solaris (I know this is the linux group but I couldnt find a sun solaris one)
I just needed to find out how processes are scheduled in Sun's solaris
and an outline of the scheduling algorithm - I've looked on the web
without anyluck - couldnt find anything specific.
"Amerz" <firstname.lastname@example.org> writes:
> I just needed to find out how processes are scheduled in Sun's solaris
> and an outline of the scheduling algorithm - I've looked on the web
> without anyluck - couldnt find anything specific.
Assuming oyu mean threads too, then you didnt look very hard - first
search gives this:
http://www.google.de/search?q=solaris+ke...ace 5.6: ACE_Event used across processes on solaris 8, sparc V9 some times does not signal the waiting process
We have a process that creates a ACE_Event of manual type with
a name, and then does timed_wait on it.
Another process uses the name of event to signal the above waiting
process. We have been seeing an issue
(not that frequently but fairly regular), that even though the process
has signalled the event, that process
doing timed_wait never gets to know that event is signalled and it
keeps on doing timed_wait until it exits.
This behaviour has been observed in solaris 8 sparc V9. We
have compiled ace using gcc.
We had debugged the ace code using gdb and every time we
debug, we found no issues at all. The process doing timed_wait was
getting to know about event being signalled.
A code walkthrough was undertaken which also yeilded nothing but
conclusion that code seems to be clear of
any bugs. The analysis done from code walkthrough is:
1. When USYNC_PROCESS is used for ACE_Event, it uses POSIX thread
conditional variables for
synchronization among processes.
2. A call to shm_open is made to get shared memory
3. The shared memory is then made to store a structure variable by
presetting its size using ftruncate.
4. Finally a mmap is called with MAP_SHARED option to share it with
5. And then the updates to the shared memory happens based on
synchronization primitives posix conditional
Please correct me if I am missing anything. It would be of great help.
So based analysis of ...