Solaris how long process running

If no -f option is specified, the expression is matched only against the name of the executable file. Matches only processes whose real group ID is in the given list. Each group ID may be specified as either a group name or a numerical group ID. Matches only the newest most recently created process that meets all other specified matching criteria. Matches only processes that are associated with a terminal in the given list.

Matches only processes whose effective user ID is in the given list. Each user ID may be specified as either a login name or a numerical user ID. Matches only processes whose real user ID is in the given list.

Considers only processes whose argument string or executable filename exactly matches the specified pattern. For example, the following pgrep command finds all processes that have "dt" in the process argument string:. Use the prstat command from the command line to monitor system processes. Again, like the ps command, it provides information on active processes.

By default, prstat displays information about all processes sorted by CPU usage. Another nice feature with prstat is that the information remains on the screen and is updated periodically. The information displayed by the prstat command is described in Table 5. This section will introduce some new terminology, so Table 5. A technique used in an operating system for sharing a single processor among several independent jobs.

Multitasking introduces overhead because the processor spends some time choosing the next job to run and saving and restoring tasks' state. However, it reduces the worst-case time from job submission to completion compared with a simple batch system, in which each job must finish before the next one starts.

Multitasking also means that while one task is waiting for some external event, the CPU is free to do useful work on other tasks. A multitasking operating system should provide some degree of protection of one task from another to prevent tasks from interacting in unexpected ways, such as accidentally modifying the contents of each other's memory areas. The jobs in a multitasking system may belong to one or many users.

This is distinct from parallel processing, in which one user runs several tasks on several processors. Time sharing is almost synonymous with multitasking, but it implies that there is more than one user. The simultaneous use of more than one CPU to solve a problem.

The processors either may communicate to cooperate in solving a problem or may run completely independently, possibly under the control of another processor that distributes work to the others and collects results from them. Multithreaded is a process that has multiple flows threads of control. The traditional Unix process contained, and still contains, a single thread of control.

Multithreading MT separates a process into many execution threads, each of which runs independently. A single-threaded subprocess. LWPs are scheduled by the kernel to use available CPU resources based on their scheduling class and priority. LWPs include a kernel thread, which contains information that must be in memory all the time, and a LWP, which contains information that is swappable. A process can consist of multiple LWPs and multiple application threads.

A lightweight process is somewhere between a thread and a full process. A series of instructions with a separate stack that can execute independently in a user's address space. The threads can be multiplexed on top of LWPs. The range of addresses that a processor or process can access, or at which a device can be accessed.

The term may refer to either a physical address or a virtual address. The size of a processor's address space depends on the width of the processor's address bus and address registers.

Processes running in bit mode have a 4 gigabyte address space 2 32 bytes and processes running in bit mode have a 16 terabyte 2 64 bytes address space. Usually refers to RAM, which can be accessed by more than one process in a multitasking operating system with memory protection. Each project ID can be specified as either a project name or a numerical project ID. Reports microstate process accounting information.

In addition to all fields listed in -v mode, this mode also includes the percentage of time the process has spent processing system traps, text page faults, and data page faults, and waiting for user locks and waiting for CPU latency time. Restricts the number of output lines. See the -S option for a list of valid keys to use. Reports only processes whose effective user ID is in the given list.

Reports only processes whose real user ID is in the given list. Specifies the number of times that the statistics are repeated. By default, prstat reports statistics until a termination signal is received.

The following example uses the prstat command to view the four most active root processes running. The -n option is used here to restrict the output to the top four processes. The next number, 5 , specifies the sampling interval in seconds, and the last number, 3 , runs the command three times:. I described projects in Chapter 4, "User and Security Administration," where user accounts can be assigned to project groups.

These projects can also be used to label workloads and separate projects and a project's related processes from one another. The project provides a networkwide administrative identifier for related work. A project consists of tasks, which collect a group of processes into a manageable entity that represents a workload component.

You can use the prstat command with the -J option to monitor the CPU usage of projects and the -k option to monitor tasks across your system. Therefore, you can have prstat report on the processes related to a project rather than just list all system processes.

In addition, the system administrator can set processing limits on the project, such as setting a limit on the total amount of physical memory, in bytes, that is available to processes in the project. For more information on projects and resource capping, read the man pages on the following commands: rcapd 1M , project 4 , rcapstat 1 , and rcapadm 1M.

Use the mpstat command to report processor statistics on a multi-processor system. When executing the mpstat command, we'll usually want to see more than one result, so we specify the number of seconds between each mpstat as follows:. The argument 30 , specifies that I want to get a report every 30 seconds. The system displays the following information every 30 seconds:. The results are from a system with four processors. Typically, a system administrator will use the mpstat command to check CPU utilization.

For more information on the other columns of information, refer to the mpstat man pages. The ptree command will display the process tree.

The parent process is displayed with the respective child processes indented beneath it. Here is an example showing the processes that belong to the inetd process PID :. With no arguments, the ptree command will display every process along with the associated child processes. The time command is used to display the time that the system has spent executing a command.

It's a useful command for benchmarking performance. Use this command to time a command on a particular system configuration and compare to another system. In the following example, I'll check the system processing time for a script I wrote named " longtime ":. The real time is the total time that has elapsed between invoking the script and its termination. The user time is the time the processor spends executing your user code.

Finally, the system time is the time the processor spends executing Operating System code on behalf of your process. The exam will most likely ask you about the command-line tools used to manage system processes, such as kill , pkill , pargs , and pgrep.

You only need to understand that GUI tools can be used to manage processes and you should be prepared to identify these GUI tools.

The advantage of using the Process Manager is that you can view and control processes without knowing all the complex options associated with the ps and kill commands. For example, you can display processes that contain specific character strings, and you can sort the process list alphabetically or numerically. You can initiate a search using the find command, or you can terminate a process simply by highlighting it and clicking kill.

To open the Process Manager, you need to log into the Desktop windowing environment. You can start the GUI by executing the command sdtprocess , as follows:. Or, you can click Find Process on the Tools subpanel, as shown in Figure 5. Figure 5. The Process Manager window opens, as shown in Figure 5. Each process attribute in the header of the Process Manager window provides detailed information about the process and is described in Table 5.

Click any of the column headings to sort the processes by that attribute. The list updates every 30 seconds, but you can enter a value in the Sampling field to update the list as frequently as you like.

Finally, you can enter a text string that is common to the process entries of all the processes you want to display in the Find drop-down menu. In Figure 5. Another nice feature of the Process Manager is the capability to display the ancestry of a process. That's all on How to show long command line of a process running on Solaris operating system.

This is a very useful command to troubleshoot Java process with long list of arguments e. Share to Twitter Share to Facebook. Labels: debugging , linux , troubleshooting , unix. Newer Post Older Post Home. Subscribe to: Post Comments Atom. Subscribe for Discounts and Updates Follow. Search This Blog. Interview Questions core java interview question data structure and algorithm 78 Coding Interview Question 75 interview questions 70 design patterns 35 SQL Interview Questions 34 object oriented programming 34 thread interview questions 30 spring interview questions 28 collections interview questions 25 database interview questions 16 servlet interview questions 15 Programming interview question 6 hibernate interview questions 6.

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Administrator Emeritus. Join Date: Aug Just playing around, this seems to work: Code :. Join Date: Jan That perl snippet only helps if incorporated at the time something starts. If you are looking back at what is currently running on the system, then ps only gives HH:MM:SS for processes started in the last 24 hours.

Processes started prior to that get month and day of the month only. I haven't actually tried this, but there are some scripts listed on the opensolaris site that are tailored for Solaris 10 or for Solaris 9 that collect diagnostics for running processes, including stime. Originally Posted by choogendyk. My apologies. My view of the posting truncated the long line. Going back to look at it again, I see that it works. So, now the OP has 3 different solutions to choose from.

Join Date: Dec Here is an alternative solution if you have stat installed: Code :.