Re: Solaris 2.5.1 Memory ? w/Informix

This is a MIME message. If you are reading this text, you may want to consider changing to a mail reader or gateway that understands how to properly handle MIME multipart messages. --=_F1A43253.99F894F0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Solaris uses unused physical memory to hold recently used pages in buffer. = It only swaps them out when you need the memory back. This is not the = exact technical detail, but this is basically what is going on here. The only way that you can determine exactly how much memory is *actually* = in use is to parse the output from ps and add it up. Another little nasty is that you have to *exclude* the onint processes = from the ps because they are incorrectly reported. the first line of = onstat -g ses will give you the real amount that Informix is using. You = can then add that to the ps output and devine your true memory usage. Don't trust top when reporting Informix oninit processes as it reports = them incorrectly. attached is the script I use to determine memory usage (other than = Infomix). rgds Peter Tashkoff <tashkop@iname.com> Zespri International Limited. Standard Disclaimers apply All rights reserved, no party may use this document to vilify another Zespri New Zealand Kiwifruit, The Worlds Finest >>> <david.parent@mci.com> 28/02/98 12:59:15 >>> Hello, We have a 3000 Ultra which has the following: Informix DSA 7.24, 512 M physical memory, Solaris 2.5.1, 1 CPU. When DSA is up, there is about 70 M of physical memory available listed from vmstat or top. When Informix DSA is brought down, there is 119 M of physical memory available (Informix is currently setup to take about 45 M or so of shared memory ...onstat -g seg). Note that when Informix DSA is down, there are no shared memory segments or semaphores listed from ipcs, nor oninit processes listed from ps but there is still only 119 M of physical memory available. So, the question is, what is consuming the other 393 M of physical memory ?? Regards, David R. Parent MCI david.parent@mci.com=20 919-572-3169 -----=3D=3D Posted via Deja News, The Leader in Internet Discussion = =3D=3D----- http://www.dejanews.com/ Now offering spam-free web-based newsreading --=_F1A43253.99F894F0 Content-Type: application/octet-stream; name="pss" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="pss" echo "Adding up the system RAM usage, please wait..." ps -afel | grep -v oninit | awk ' BEGIN{} {z = $7 };{ s+=$10; } END{ s/=1000 ; printf ("Apart from Informix the system is using %d Megabytes of RAM\\nAs totalled from the process table\\n", s); }' --=_F1A43253.99F894F0--