Login or Register to Ask a Question and Join Our Community


Solaris

Low average cpu utilization.

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems Solaris Low average cpu utilization.
# 1  
Old 12-11-2007
Low average cpu utilization.
Hi to all,

i have an app on solaris 5.8 writed in C++ (3.2.1) that use multi threading.
Hardware has 8 cpu. When i run my app i note that the average of cpu go at least at 40%, and the performance are not so higher..

There is a cpu limitation on solaris, that dedicate only a part of cpu to a process? Or something else?
# 2  
Old 12-11-2007
By default, there is no such limitation but you can bind a process to a CPU or a group of CPUs if you like.

I guess if your app performance tops at 40% CPU then the bottleneck is elsewhere.
# 3  
Old 12-11-2007
Does "top" show the per-cpu utilisation?
I'm not sure how threading actually works on Solaris 8 capable boxes.
# 4  
Old 12-11-2007
Quote:
Originally Posted by jlliagre
I guess if your app performance tops at 40% CPU then the bottleneck is elsewhere.
Yes, you don't say what you application does. Waiting on disk or network IO will lower the CPU usage.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Red Hat

CPU Utilization and Memory Utilization of Services and Applications

Hi, i am new to linux/RHEL 6.0 and i have two questions. 1) How to get the CPU utilization and Memory Utilization of all Services running currently? 2) How to get the CPU utilization and Memory Utilization of all Applications running currently? Please help me to find the script. ... (2 Replies)
Discussion started by: nossam
2 Replies

2. UNIX for Advanced & Expert Users

Load average in squeeze too low

sorry, not yelling, its just copied from a bug report and this prob is driving me crazy... ran stress --cpu 4 on a xeon and no problem the load went up to 4, but running mysql server for example the load is almost 0.00, where the same mysql server with same throughput gets 0.8 on another lenny... (15 Replies)
Discussion started by: suffeks
15 Replies

3. AIX

High Runqueue (R) LOW CPU LOW I/O Low Network Low memory usage

Hello All I have a system running AIX 61 shared uncapped partition (with 11 physical processors, 24 Virtual 72GB of Memory) . The output from NMON, vmstat show a high run queue (60+) for continous periods of time intervals, but NO paging, relatively low I/o (6000) , CPU % is 40, Low network.... (9 Replies)
Discussion started by: IL-Malti
9 Replies

4. Shell Programming and Scripting

CPU Utilization

I know how to check the CPU utilization and memory space like: vmstat top free What i want ot check on my linux system is... how much CPU are available on my system and do i need to put extra CPU. Also need to check the hardware configuration and the space related to the same ... (3 Replies)
Discussion started by: j_panky
3 Replies

5. AIX

CPU Utilization

Hi All, Can some one help me in finding % CPU Utilization ? From VMSTAT command, How we can find % utilization ? Thanks (3 Replies)
Discussion started by: VBudatha
3 Replies

6. HP-UX

Bad performance but Low CPU loading?

There might be some problem with my server, because every morning at 7, it's performance become bad with no DB extra deadlock. But I just couldn't figure it out. Please give me some advise, thanks a lot... According to the CPU performace chart, Daily CPU loading Maximum: 42 %, Average:36%. ... (8 Replies)
Discussion started by: GreenShery
8 Replies

7. UNIX for Dummies Questions & Answers

how to get persistant cpu utilization values per process per cpu in linux (! top,ps)

hi, i want to know cpu utilizatiion per process per cpu..for single processor also if multicore in linux ..to use these values in shell script to kill processes exceeding cpu utilization.ps (pcpu) command does not give exact values..top does not give persistant values..psstat,vmstat..does njot... (3 Replies)
Discussion started by: pankajd
3 Replies

8. Shell Programming and Scripting

CPU Utilization

Dear friends, I am doing a report daily for all most 30 more serves... i need to check out CPU utlization bu (top command, 100 - (ideal value)) and Memory utilization too could some one help me how can i get it directly, if scripts also no problem.. i will very thankful if some one... (3 Replies)
Discussion started by: bullz26
3 Replies

9. Shell Programming and Scripting

io utilization (average) on AIX

Hi, How can i find out the total average IO utilization over a period of time for a long-running process? on AIX Thanks (0 Replies)
Discussion started by: iam
0 Replies

10. UNIX for Advanced & Expert Users

CPU Utilization

On user complains about the performance of web application, as a part application support, we use following commands to see the CPU utilization in the UNIX using ‘sar' command. Some times it goes below 20 and even reaches 0. HLW$~> sar -u 10 60 SunOS HLW 5.8 Generic_117350-14 sun4u ... (2 Replies)
Discussion started by: thinakarmani
2 Replies
Login or Register to Ask a Question