On Tuesday 09 January 2007 06:10, Greg Albrecht wrote:
> while searching for 'freebsd process states' on google i came across
> this thread:
> http://lists.freebsd.org/pipermail/freebsd-questions/2006-December/138024.h
>tml i'm a new subscriber, so i can't reply to the original thread.
>
> i'm guessing [EMAIL PROTECTED]'s original question was something more
> like: "that do the values in the STATE column in top mean?" here's an
> example of what i'm talking about:
>
> ## bad 'top' formatting to come
> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU CPU
> COMMAND 95698 mysql 20 0 388M 349M kserel 0 266.7H 0.63%
> 0.63% mysqld 98237 jffnms 8 0 21224K 14412K nanslp 0 0:02
> 0.59% 0.59% php 98239 jffnms 96 0 22124K 15292K select 1 0:02
> 0.49% 0.49% php 98596 root 96 0 4124K 2560K CPU1 1
> 0:00 0.51% 0.05% top 1263 root 4 0 1408K 708K accept 0
> 0:07 0.00% 0.00% vsftpd 3405 galbrecht 8 0 4876K 2676K wait
> 0 0:00 0.00% 0.00% bash 94414 root 4 0 3284K 1968K
> sbwait 1 0:00 0.00% 0.00% mysql ## end of bad formatting
>
> this snippet of top shows the following values for STATE: kserel,
> nanslp, select, CPU1, accept, wait, sbwait
>
> this thread has already cleared up these states:
> nanslp: "Waiting for < 1 second." [EMAIL PROTECTED]
> select: "Waiting for a select() to complete" [EMAIL PROTECTED]
> wait: "Waiting for something to happen, possibly time limited (>= 1
> second)" [EMAIL PROTECTED]
>
> top(1) tells us: "STATE is the current state (one of "sleep", "WAIT",
> "run", "idl", "zomb", or "stop")"
>
> eh, not so much.
>
> man clears up some of these states:
> sleep: "The sleep command suspends execution for a minimum of
> seconds." - sleep(1)
> accept: "accept a connection on a socket" - accept(2)
>
> i bet i can answer with:
> run: process is running?
> zomb: zombie process, terminated but not removed from memory
>
> that leaves us with:
> kserel?
The process is waiting for some event to occur in one of its threads.
see kse(2). Please someone correct me if I'm wrong.
> sbwait?
"Wait for data to arrive at/drain from a socket buffer." (see
sys/kern/uipc_socket2.c:363). So, it is essentially waiting for network I/O.
> idl?
> stop?
I've never seen a process in one of these states.
>
> does the previous answer still apply ("ask the developers of those
> programs")?
The states are set in the kernel, so the (userland) program developers
wouldn't be able to answer these questions.
Hope this helps,
Pieter
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