I see, thanks. How do I get the amount of memory being used by named, or any process and it's children for that matter?
Cheers, Nigel > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of David Hollister > Sent: 15 July 2003 16:41 > To: [EMAIL PROTECTED] > Subject: RE: named > > > On Tue, 2003-07-15 at 07:20, Nigel Peck - MIS Web Design wrote: > > Thanks. I'm not saying you're wrong I'm just curios, how do you > know and what's the difference with Apache (below) that is using > up memory for each process? > > > > And why does ps show individual threads? Shouldn't it only show > processes as the name implies? > > The linux thread implementation simply takes a "one process per thread" > approach. That's why each thread appears as a process. I'm sure if you > do a google search or possibly read the ps man page, it'll explain how > you can see (or not see) the actual threads. > > > And why does each one show it is using a percentage of memory? > > > > PID PPID RSS VSZ %CPU %MEM CMD > > 23282 1 1424 4304 0.0 1.2 /usr/sbin/httpd > > 30483 23282 1640 4508 0.0 1.3 /usr/sbin/httpd > > 30538 23282 1640 4508 0.0 1.3 /usr/sbin/httpd > > 30639 23282 1640 4508 0.0 1.3 /usr/sbin/httpd > > 31453 23282 1644 4508 0.0 1.3 /usr/sbin/httpd > > > > Sorry for so many questions. > > > > Cheers, > > Nigel > > This is simply because each "process" (thread) is more or less a copy of > the actual process. > > Keep in mind, also, that regardless of what process you are talking > about, if multiple copies are running (whether threads or actual > processes), the kernel will automatically share the text regions of each > process. So, there is no additional overhead in running additional > copies, at least as far as the code is concerned. > > -- > David Hollister > Furthurnet - Free, legal P2P - share the tunes: http://furthurnet.org > > > -- > redhat-list mailing list > unsubscribe mailto:[EMAIL PROTECTED] > https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
