The while loop can make 300000 in 30 seconds. That's 300000 separate processes all running AT THE SAME TIME. Your system cannot have that many processes going at the same time.
When you run it in fg, it creates one process at a time. One process vs. 300000.
hey all,
i am working on sun solaris machine and i want to start a process in background using shell script (actually i wanna start tomcat server using shell script). please dont tell me that append a & at last because this is not working in the shell script. i have also used nohup and... (8 Replies)
Guys,
can you help me in killing the process which is running in back ground under for loop
I am not able to find the PID using ps -afx|grep <word in command I entered> (1 Reply)
We had a generic process where the jobs are scheduled to run sequentially and in background. We are noticing the problems with the background jobs.
Error Message:
/bin/ksh: /home/suren/bin/GenericReportScript.sh: cannot execute
The same script is existing in bin and it had enough... (2 Replies)
hi,
we have a script which runs for the whole day and whenever the job fails, will send an alert to the mailbox. My problem here is that i need to give the jobname dynamically which is not possible if we run the script in background. Pls help me with this.
Thanks
Ajay (6 Replies)
I am trying to use a loop to start tasks 0-3, running 0,1,2 in the background with &.
FOLDSET=( 0 1 2 3 )
for FOLDSET in ${FOLDSET}
do
if ; then
BACKGRD="&"
else
BACKGRD=""
fi
# start task $FOLDSET
task1 -nogui -ni -p $PROJ \
epochs=$EPOS ... (3 Replies)
Hi all,
I have a script that calls another program/script, xxx, to run in the background. Supposedly this program at most should finish within five (5) minutes so after five (5) minutes, I run some other steps to run the script into completion.
My problem is sometimes the program takes... (5 Replies)
Hi,
I am facing a strange issue,
when i call a script from my while loop in background it doesnt go in background, despite the wait i put below the whil loop it goes forward even before the process put in background is completed.
cat abc.txt | while read -u4 line
do
#if line contains #... (2 Replies)
Hello Everyone,
I am writing a shell script to fetch log files from remote servers within a time range. It copies log files to local server, grep for date and then compares the time stamp of each log entry with the once specified.
Below is the code.
# Get log and Parsing function
... (1 Reply)
Hi,
I work on Ab-initio ETL tool which is based on Unix. I made a small script which has two loop's one with in another. All the functionality is working for the first line of outer loop but when it comes to other lines of outer loop it is throwing error as command not found. Below is the... (4 Replies)
Discussion started by: Ravindra Swan
4 Replies
LEARN ABOUT HPUX
serialize
serialize(2) System Calls Manual serialize(2)NAME
serialize() - force target process to run serially with other processes
SYNOPSIS DESCRIPTION
The system call is used to force the target process referenced by the pid value passed in to run serially with other processes also marked
for serialization. If the value of pid is zero, then the currently running process is marked for serialization. Once a process has been
marked by the process stays marked until process completion, unless is reissued on the serialized process with timeshare set to 1. If
timeshare is set to 1, the process specified in pid will be returned to normal timeshare scheduling algorithms.
This call is used to improve process throughput since process throughput usually increases for large processes when they are executed seri-
ally instead of allowing each program to run for only a short period of time. By running large processes one at a time, the system makes
more efficient use of the CPU as well as system memory, since each process does not end up constantly faulting in its working set, to only
have the pages stolen when another process starts running. As long as there is enough memory in the system, processes marked by behave no
differently from other processes in the system. However, once memory becomes tight, processes marked by are run one at a time with the
highest priority processes being run first. Each process runs for a finite interval of time before another serialized process is allowed
to run.
RETURN VALUE
returns zero upon successful completion, or nonzero if the system call failed.
ERRORS
If fails, it sets (see errno(2)) to the following value:
The pid passed in does not exist.
WARNINGS
The user has no way of forcing an execution order on serialized processes.
AUTHOR
was developed by HP.
SEE ALSO serialize(1), privileges(5).
serialize(2)