Re: Process States Explanation
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Fr0zen wrote: Where can I get a good list of what each process state means? I have searched the manual pages and handbook and have not been able to find answers or explanations for what states such as pfault mean. I know they are linked to the systemcalls, but how can I get more info about this? Any information, pointers, or feedback would be greatly appreciated. Thanks pfault = page fault = grab a page from the next layer of memory, perhaps? Wiki page: (http://en.wikipedia.org/wiki/Page_fault). - -Garrett -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.6 (FreeBSD) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFhpKLEnKyINQw/HARAn0LAJ4vglDhzrT9/tL+3902qenbkUx+kgCfTET5 BGTM/FWwGd9IHHoQ5o3d78U= =gUyX -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Process States Explanation
In response to Fr0zen [EMAIL PROTECTED]: Where can I get a good list of what each process state means? I have searched the manual pages and handbook and have not been able to find answers or explanations for what states such as pfault mean. I know they are linked to the systemcalls, but how can I get more info about this? Please wrap you lines around 72 chars or so. Any information, pointers, or feedback would be greatly appreciated. Unfortunately, I don't think there's any such comprehensive resource. However, I would expect that 80% of the time, a google on state freebsd will produce enough information to satisfy you. The other 20% of the time, you'll either need to read the source code or find a helpful developer to explain. Don't hesitate to ask on this list if you come across a state you can't find information on. -- Bill Moran Collaborative Fusion Inc. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Process States Explanation
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On Monday, 18 December 2006 at 1:06:13 -0600, Fr0zen wrote:
Where can I get a good list of what each process state means?
That depends on what you mean by process state. The real definition
is in /usr/include/sys/proc.h, but there are now only three states:
enum {
PRS_NEW = 0,/* In creation */
PRS_NORMAL, /* threads can be run. */
PRS_ZOMBIE
} p_state; /* (j/c) S* process status. */
Maybe you mean the thread state, also described in the same file, but
I doubt it.
There are two other possibilities:
- The information reported by ps(1) in the STAT column. This is
described, not surprisingly, in the man page ps(1).
- The information reported by ps(1) in the MWCHAN column. This is a
name passed by a part of the kernel when it sleeps, so any process
with a value in MWCHAN is sleeping. The names are frequently
associated with the name of the function doing the sleeping. In
general, you need to understand the kernel code to make a lot of
sense of them. Still, if you do a 'ps al' you'll see a number of
names again and again:
ttyin Waiting for character input
select Waiting for a select() to complete
waitWaiting for something to happen, possibly time
limited (= 1 second)
nanslp Waiting for 1 second.
Maybe we should write up some of these.
Greg
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Re: Process States Explanation
Fr0zen wrote: Where can I get a good list of what each process state means? It's not standardised - every kernel developer and device driver writer can introduce whatever states he needs. signature.asc Description: OpenPGP digital signature
