Date: Thu, 2 Aug 2001 10:50:02 -0700 (PDT) From: Jonathan Chen <jon@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/28367: top -d 1 will not show proper information concerning cpu states, nor will -d1 Message-ID: <200108021750.f72Ho2E73277@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR bin/28367; it has been noted by GNATS.
From: Jonathan Chen <jon@FreeBSD.org>
To: freebsd-gnats-submit@FreeBSD.org, tspivey8@home.com
Cc:
Subject: Re: bin/28367: top -d 1 will not show proper information concerning cpu states, nor will -d1
Date: Thu, 2 Aug 2001 13:49:14 -0400
Unfortunately, due to the way top obtains the cpu statistics, fixing
top -d1 properly is a nontrivial task. These cpu statistics are obtained
by reading some numbers twice and taking the differences. Of course, if
you wish top -d1 to return immediately, you cannot get the cpu statistics.
You may wish to run top -d2 and ignore the first output. Alternatively,
the following patch is a quick workaround to the problem if you must use
-d1. This will not be integrated into FreeBSD, but you may wish to apply
it to your local source tree to get a "fixed" top.
Top is a "contributed" software in FreeBSD. This means that top is
maintained by someone outside of the FreeBSD community. You may have
better response by directing further inquiries about top to its author:
William LeFebvre <wnl@groupsys.com> Of course, any FreeBSD specific
problems should still be submitted to us.
Thank you for your interest in FreeBSD.
-Jon
[Patch included below]
diff -u -r1.6 top.c
--- contrib/top/top.c 2000/11/03 22:00:10 1.6
+++ contrib/top/top.c 2001/08/02 17:34:11
@@ -529,6 +529,12 @@
* indicates infinity (by being -1)
*/
+ if (displays == 1) {
+ get_system_info(&system_info);
+ usleep(100000);
+ dostates = Yes
+ }
+
while ((displays == -1) || (displays-- > 0))
{
/* get the current stats */
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200108021750.f72Ho2E73277>