11-02-2017
Quote:
Originally Posted by
arunkumar_mca
Even with that I am seeing the first parallel process is taking less time and the process time increase with the split going on
Once you've maxed out your I/O bandwidth, adding more processes will just make a task slower. How many processes it takes to max out your I/O bandwidth could well be "one". Spinning disks especially lose a lot of bandwidth when split between competing tasks.
Beyond that, it's difficult to say what's happening. We still don't know what you're doing. "Processing" is a fine word but tells us little.
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LEARN ABOUT DEBIAN
mdm-run
MDM-RUN(1) User Commands MDM-RUN(1)
NAME
mdm-run - run a command in parallel with mdm-master
SYNOPSIS
mdm-run command
mdm-sync command
DESCRIPTION
mdm-run annotates command as a candidate for parallel execution. If an mdm-master process is present (i.e., the environment variable
MDM_CMD_SOCK is defined), mdm-run submits command to the mdm-master, and it exits when the master issues the command to an mdm-slave
process (which may be connected to another terminal) for execution. mdm-sync runs command in place, but it coordinates with mdm-master to
ensure that executing command does not interfere with commands that are currently executing in parallel.
If there is no mdm-master process present (i.e., the environment variable MDM_CMD_SOCK is not defined), both mdm-run and mdm-sync simply
run command as if you entered command all by itself.
These programs are a part of the Middleman System (mdm).
OPTIONS
Neither mdm-run nor mdm-sync accepts any options.
EXIT STATUS
If there is no mdm-master process present, the exit status of mdm-run is the exit status of command. If an mdm-master process is present,
the exit status is 0 if and only if command is successfully issued to an mdm-slave process for execution.
The exit status of mdm-sync is always the exit status of command.
ENVIRONMENT
The mdm system uses the following environment variable for internal communication, and thus you should not try to set them yourself.
MDM_CMD_SOCK
mdm-run uses this environment variable to decide whether a mdm-master process is present.
EXAMPLE
See mdm.screen(1) for an example use of mdm-run.
SEE ALSO
mdm.screen(1)
Linux 2009-03-06 MDM-RUN(1)