Date: Fri, 30 Mar 2001 15:01:20 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: freebsd-alpha@FreeBSD.org Subject: RE: do we care about performance yet? Message-ID: <XFMail.010330150120.jhb@FreeBSD.org> In-Reply-To: <15044.1867.943183.224703@grasshopper.cs.duke.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
On 30-Mar-01 Andrew Gallatin wrote: > > FWIW, I ran a make buildworld this evening on my UP1000 under iprobe, > as well as with the receive side of a netperf tcp stream. > > (for anybody who doesn't know what iprobe is, check out > http://www.cs.duke.edu/ari/iprobe) > > For the buildworld, the system spent about 40% of its time in kernel. > Roughly 50% of that was in various states of idleness. I've left full > reports at: > > http://www.cs.duke.edu/~gallatin/iprobe_current/ > > The "???NOT_FOUND" is userland code I didn't tell iprobe about. > > The top few functions were: > Sample Image Total > Name Count Pct Pct > ---- ----- --- --- > /boot/kernel/kernel 1411352 39.3 > runq_check 283261 20.1 7.9 > procrunnable 268553 19.0 7.5 > idle_proc 161822 11.5 4.5 These 3 are only used when we are sitting idle in the idle proces because there are no runnable proceses. We can't really optimize these away. :-/ -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.010330150120.jhb>