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>>>>> "Tarun" == Tarun Dua <[EMAIL PROTECTED]> writes:
Tarun> Vikram Mandal wrote:
>> BTW, do you know what "Load Averages 0.16 0.26 0.12 " means?
Tarun> Represents load averages over the last 1, 5 and 15 minutes,
Tarun> respectively
>> I mean what does it tells anyone about the system. I am sorry
>> for such novice queries; I am very new to linux.
Tarun> The load average is the ratio of amount of CPU processes
Tarun> want to access at a given time with actual CPU processing
Tarun> power available. Therefore it should be less than 1.
Umm, not really. At any given time a CPU can handle one process.
Other processes that are ready to run have to wait for their turn.
Note that many processes aren't ready to run -- e.g. those waiting for
disk I/O to complete, stopped in a sleep or on a semaphore, etc. The
load average is the measure of the average number of ready to run
processes waiting for their turn at the CPU over the past 1, 5 and 15
minutes.
In general, lower load averages mean lower load on the CPU. However,
lower load averages could also mean that your system is overpowered --
don't let your boss see consistent load averages of 0.05 on your
servers over 2 years -- s/he will want to know why you requested a
quad-Xeon server with 2GB RAM when a 486 with 16MB could have done the
job just as well :)
High load averages could indicate all sorts of problems including
badly-written programs, slow CPU, not enough RAM or slow disks. I
personally investigate consistent load averages of over 1 on servers I
manage. However, I'm not a fanatic about it -- I've also seen servers
perform fine with consistent load averages of up to 5 or so in the
long run.
Regards,
- -- Raju
- --
Raj Mathur [EMAIL PROTECTED] http://kandalaya.org/
GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F
It is the mind that moves
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