Using xapply efficiently?


 
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Old 04-17-2007
Using xapply efficiently?

Hi all,


Were currently using xapply to run multiple ssh instances that then calls
a script that returns the PID of a webserver process.

Currently we have like 30 xapply statements in a script call checkit which
checks various webserver processes on various unix/linux boxes.

My question is is there a more efficient way of handling these instances
then calling 30 xapply statments? Could this script be written with just
one xapply? Heres what one line of code looks like for one of these instance.

xapply 'ssh %1 ./fccserv1' ajaxdev1
xapply 'ssh %1 ./<script name>' <servername>

Add about 30 more lines with the script name and server name changing for each line.

Thanks!
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syscallbypid.d(1m)						   USER COMMANDS						syscallbypid.d(1m)

NAME
syscallbypid.d - syscalls by process ID. Uses DTrace. SYNOPSIS
syscallbypid.d DESCRIPTION
This reports the number of each type of system call made by PID. This is useful to identify which process is causing the most system calls. This is based on a script from DExplorer. Since this uses DTrace, only users with root privileges can run this command. EXAMPLES
This samples until Ctrl-C is hit. # syscallbypid.d FIELDS
PID process ID CMD process name SYSCALL system call name COUNT number of system calls made in this sample DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
syscallbypid.d will sample until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
procsystime(1M), dtrace(1M), truss(1) version 1.00 Jun 28, 2005 syscallbypid.d(1m)

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