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  1. #1
    Join Date
    Aug 2005
    Posts
    529

    whats "user" and "system" in the top output?

    as the title suggests, what is "user" and "system" in top?

    it seems to spike on my vps up to 100% quite often, makes load go up to unhealthy amounts.

    thanks!

  2. #2
    Join Date
    May 2006
    Location
    NJ, USA
    Posts
    6,456
    Well, if that's the case, depending on the process, you should investigate that as they are eating CPU. 100% CPU.
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  3. #3
    Join Date
    Aug 2005
    Posts
    529
    ok if i look at the "top" processes, its practically empty. yet load shoots up to 5-12, sometimes higher. barely anything going on on the server-- in fact abotu 2 days ago there was a complete outage due to a faulty cpanel update that corrupted my dns... so basically the server was serving absolutely nothing, yet my load was at like 3-5 the entire period.

    your best bet-- do you think this has something to do with the node, or my specific VPS?

  4. #4
    Join Date
    Jan 2006
    Location
    Sydney, Australia
    Posts
    251
    Quote Originally Posted by chamelion
    as the title suggests, what is "user" and "system" in top?
    From the vmstat man page:

    Code:
    CPU
       These are percentages of total CPU time.
       us: Time spent running non-kernel code. (user time, including nice time)
       sy: Time spent running kernel code. (system time)
       id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.
       wa: Time spent waiting for IO. Prior to Linux 2.5.41, shown as zero.
    "user" -> CPU time running code in user-space
    "sys" -> CPU time running code in kernel space

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