Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Max number of concurrent processes Post 42 by Neo on Wednesday 27th of September 2000 04:59:04 PM
Old 09-27-2000
Sorry, can't imagine why anyone would want to configure a UNIX kernel for more 64,000 concurrent processes.

What you are basically saying is that an administrator
could do a 'ps -aux' command to look at the process table
and would see 64,000 processes!

With the inexpensive price of CPUs, memory, disks, etc.
this is simply not a practical way to set up any platform.

But,to answer your question, albeit indirectly, there are normally formulas for kernel parameters associated with the OS. You can't just 'increase processes' without lowering another value i.e. 'file descriptors' or perhaps other kernel parameters (don't have the formulas handy, sorry).

The README files in the kernel configuration directory tree should have the formulas. Could you post these formulas?
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

concurrent terminal connections and processes

we've got solaris 5.6 installed in a ultra 5 box that serves as gateway server going to the main unix box. just like to find out how to determine the number of concurrent terminal connections and processes that the ultra 5 box can handle? and handling at present time? thanks in advance! (1 Reply)
Discussion started by: eddie_villarta
1 Replies

2. UNIX for Advanced & Expert Users

Max. No. Processes/user

Hi All, I heared that each user in UNIX have max. number of processes that can be running at one time. Is this correct? If yes, how can I know this number and how can I change it. N.B.: I am using Sun 5.6 Regards (4 Replies)
Discussion started by: omran
4 Replies

3. Solaris

Scripts - Processes, CPU, Max. Connections

Hi all, Can any one please tell me how to find these in Unix (Commands) 1. Too many processes connected to the server. 2. High Utilization of CPU. 3. Maximum Number of connections with the database. OS: Sun Solaris 5.8 DB : Oracle 10g Thanks and Regards, Prashanth (1 Reply)
Discussion started by: prashanth_gs
1 Replies

4. Shell Programming and Scripting

concurrent processes

We have a very large text file..contains almost 100K lines. We want to process this file to generate another text file as per our data requirement. As for now the parsing of data takes 20-25 mins each , for 100K lines. the current script uses : While Read Each Line do parsing.. Done ... (6 Replies)
Discussion started by: Amruta Pitkar
6 Replies

5. Solaris

Max. Possible number of IOs

Hi, Is there a way to find out the maximum possible number of IOs on a Solaris Servers. I'm using SUN Fire V240 (2 Replies)
Discussion started by: justsam
2 Replies

6. Shell Programming and Scripting

find max number

Hi, i have a file with numbers in it and i was wondering if there's a script i could use to find the max number and have that printed to a new file? example a.txt 18 26 47 34 27 so find the max number in a.txt and print it to b.txt. Thanks! (17 Replies)
Discussion started by: moonbaby
17 Replies

7. Shell Programming and Scripting

Max number of variables?

Hi Folks.Just out of interest does anyone know if their is a maximum number of variables that korn shell supports and if so how do I query what it is?Cheers (1 Reply)
Discussion started by: steadyonabix
1 Replies

8. Solaris

Max. number of NFS mounts

Hi, I was wondering, whether there is a limit regarding the max number of nfs mounts in Oracle Solaris 10 (newest update). The data center plans to migrate from a fibre channel based storage environment (hitachi) to a nfs based storage environment (netapp). Regarding the Solaris 10 database... (1 Reply)
Discussion started by: schms
1 Replies

9. Shell Programming and Scripting

Help with how to run multiple script with concurrent processes runs sequentially.

Hi, The problem detail is follows I have three individual scripts . SCRIPT A sh -x sqoop_channels_nc_daily_01.sh & sh -x sqoop_channels_nc_daily_02.sh & sh -x sqoop_channels_nc_daily_03.sh SCRIPT B sh -x sqoop_contacts_nc_daily_01.sh & sh -x sqoop_contacts_nc_daily_02.sh & sh -x... (1 Reply)
Discussion started by: H_bansal
1 Replies

10. AIX

Difference between concurrent and enhanced concurrent VG

Hi, What are the differences between concurrent and enhanced concurrent VGs.? Any advantages of enhanced concurrent VG over normal concurrent vg Regards, Siva (2 Replies)
Discussion started by: ksgnathan
2 Replies
PMC_COUNTER_STUDY(1)					    BSD General Commands Manual 				      PMC_COUNTER_STUDY(1)

NAME
pmc_counter_study -- Perform various study's on a systems overall PMC's. SYNOPSIS
pmc_counter_study DESCRIPTION
The pmc_counter_study The pmc_counter_study program is designed to run various tests against your systems performance. There are roughly 20-22 canned tests that setup specific PMC's and then run various formulas on the output information. These formulas can be found in Intel documentation "Using Intel Vtune amplifier xe on NNN Generation Intel Core Processors". The NNN is either 2nd, 3rd or 4th generation i.e. Sandy Bridge, Ivy Bridge and Haswell. Currently the program only works on these three Intel processor types. You can see the complete list of formula's by running the program with the -H option. If you know a formula name you can run it by typing -e name. If you know a name and want what the formula is you can run the program with -e name -h and the program will not run but it will tell you what that name will do (if known). The -T option can be used to test all PMC's that are known to your system. When running a test you will want to specify -m N where N is the number of 1 second samples to collect and analize (it bounds the time the test runs). Finally for those that have there own ideas on what formulas that you want to run you can type your own formula in with -E "formula". The formula can declare directly the PMC's by name or you can use an abbreviation %NNN. To find out the abbreviations on your system you may run pmc_counter_study -L and it will tell you each PMC name and the abbreviation you can use. An example of a formula of your own might be -E "FP_ASSIST.ANY / INST_RETIRED.ANY_P" <or short hand on Haswell> -E " %176 / %150". You must have spaces between each entry and you may use paraenthisis to prioritize the operators. Add (+), Sub- tract (-1), Divide (/) and Multiplication (*) is supported. You may also introduce constant numbers as well. So for example you can do a standard efficency test like -E "UOPS_RETIRED.RETIRE_SLOTS / (4 * CPU_CLK_UNHALTED.THREAD_P)". BSD
Dec 2, 2014 BSD
All times are GMT -4. The time now is 01:27 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy