I mean I added a usleep() before the poll in s_bsd.c for the undernet 2.10.10 code.
timeout = (IRCD_MIN(delay2, delay)) * 1000; + usleep(100000); <- New Line nfds = poll(poll_fds, pfd_count, timeout); And now we're using 1/8th the cpu! With no noticeable effects. Regards Darren. -----Original Message----- From: Aaron Sethman [mailto:[EMAIL PROTECTED]] Sent: 04 February 2002 17:41 To: Darren Smith Cc: 'Andrew Morton'; 'Dan Kegel'; 'Vincent Sweeney'; [EMAIL PROTECTED]; [EMAIL PROTECTED]; 'Kevin L. Mitchell' Subject: RE: [Coder-Com] Re: PROBLEM: high system usage / poor SMP network performance On Mon, 4 Feb 2002, Darren Smith wrote: > Hi > > I've been testing the modified Undernet (2.10.10) code with Vincent > Sweeney based on the simple usleep(100000) addition to s_bsd.c > > PRI NICE SIZE RES STATE C TIME WCPU CPU | # USERS > 2 0 96348K 96144K poll 0 29.0H 39.01% 39.01% | 1700 <- Without > Patch > 10 0 77584K 77336K nanslp 0 7:08 5.71% 5.71% | 1500 <- With > Patch Were you not putting a delay argument into poll(), or perhaps not letting it delay long enough? If you just do poll with a timeout of 0, its going to suck lots of cpu. Regards, Aaron
