<p dir="ltr">I run with swap on my servers but I have it small compared to ram. Most 128GB systems will get 2G swap.</p>
<p dir="ltr">My HPC cluster has swap disabled. The virtual machine hosts have about 1/3 as much swap as RAM and always more than any 2 VMs ram total.</p>
<p dir="ltr">Setting swappines is a great way to tune the system for good performance.</p>
<div class="gmail_quote">On Jan 4, 2016 7:38 PM, "Scott McBrien" <<a href="mailto:smcbrien@gmail.com">smcbrien@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div></div><div>Running without swap used to be a really risky proposition, but these days, running with out it is fine. Though oom-killer might do things you may not like. Since it's your desktop, that's probably OK, but on a server, it might cause problems if oom-killer whacked your database after killing sshd. :-)</div><div><br></div><div>You'll note that most cloud images and the like don't run with a swap.</div><div><br></div><div>-Scott</div><div><br>On Jan 4, 2016, at 2:16 PM, Chris Fowler <<a href="mailto:cfowler@outpostsentinel.com" target="_blank">cfowler@outpostsentinel.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:#000000"><div>On my Ubuntu 15.04 running 3.19 I have found that having swap can be a real problem. I think this has a lot to do with Chrome. I have 8G on the machine and when coming back from screen saver or other tasks response takes a substantial drop. I know it is swapping pages. Disabling swap solves this problem. I ran my desktop over a month with no swap and forgot to turn it off after a reboot. I just had to wait 5 minutes so it would become responsive again.</div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Ale mailing list</span><br><span><a href="mailto:Ale@ale.org" target="_blank">Ale@ale.org</a></span><br><span><a href="http://mail.ale.org/mailman/listinfo/ale" target="_blank">http://mail.ale.org/mailman/listinfo/ale</a></span><br><span>See JOBS, ANNOUNCE and SCHOOLS lists at</span><br><span><a href="http://mail.ale.org/mailman/listinfo" target="_blank">http://mail.ale.org/mailman/listinfo</a></span><br></div></blockquote></div><br>_______________________________________________<br>
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