Date: Sat, 16 Sep 1995 18:21:58 -0700 From: David Greenman <davidg@Root.COM> To: Mark Hittinger <bugs@ns1.win.net> Cc: hackers@freebsd.org Subject: Re: FreeBSD Max Users (fwd) Message-ID: <199509170121.SAA00156@corbin.Root.COM> In-Reply-To: Your message of "Sat, 16 Sep 95 21:14:50 EDT." <199509170114.VAA02600@ns1.win.net>
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>> From: Andreas Klemm <andreas@knobel.gun.de> >> The initial value of 10 isn't that bad. 250 is _overkill_. It makes >> certain kernel structures too huge and _kills_ your performcance. >> I'd choose values of 10-20 depending on the amount of memory >> you have and the number of users, that will work at the same time >> on your system. > >I don't want to offend Andreas but I think this information might not >be entirely accurate. I've been using a setting of 256 for around 8 >months now. Creating a large swap area, and using a larger maxusers >parameter has been necessary for me to operate my production internet >servers. I have maxusers = 200 on wcarchive. It's necessary when you have nearly 1000 processes sometimes. >I do not see a performance hit from this. You might see a performance hit if you are tight on memory. If you have 128MB+ of RAM, then it's not going to be a problem. :-) >I do see a major performance hit when I don't use enough swap space or >if I don't pump up certain kernel parameters - the system either hangs >or crashes! Yeah, the system should be a bit more graceful...but this is difficult to engineer. -DG
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