Madhu Reddy wrote: > Hi, > When i ran perl script on multi processor > machine... > it is taking more time as than on single processor > machine.... > > Let me explain clearly.... > > I have big file (.5Gb) it has 8 million records... > my perl script will read each record and validates.. > Validation includes..checking each record lenghth > etc.... > > When i ran this script on single processor machine > With 256MB RAM, It took 3 min to process 8 million > records... > > If ran the same script on Multi processor machine > (4 CPU's and 3GB RAM), it took 6min.... > > Any body have idea why it is taking more time on > multi processor system ? >
there are a lot of reason why your script runs slower in a more powerful machine but i am a bit suprise by your finding, how many test have you done to compare the result in these 2 machines? one? or have you test at least say, 10 times, and average the process time between the 2? a machine with 4 cpu and 3gb of memory is definitely hard wired to crunch number and boost i/o performance. not accounting for machine load, there is very little reason your Perl script will run slower on a powerful machine. i don't believe i/o is the bottleneck in your 4cpu machine. again, if the machine has heavy load then it could be the reason but hardware wise, it shouldn't. david -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
