Eric, On Fri, May 31, 2013 at 1:40 PM, Eric Shubert wrote: > On 05/31/2013 09:28 AM, keith smith wrote: > >> >> Hi, >> >> Even though I have 64bit hardware I always install the 32bit version of >> Linux. I do so because of the past discussions on this list that made >> me believe the 32bit OS was better because 64bit caching is actually >> slower due to the requirement that the cache be filled to a certain >> point before it is moved. I think I recall something about the amount >> of RAM having some effect here also. >> >> Using a 32bit version over a 64bit version seems counter intuitive, >> however that is what I have taken away from these conversations about >> 32bit vs 64bit Linux. >> >> I'm using CentOS 6.x on a LAMP server that gets a low amount of >> traffic. However I may make the jump to Linux on my desktop this >> summer. (this will be my 3rd attempt to become M$ free except one VM so >> I can use IE for testing) I think all of my hardware is 64bit. >> >> So that begs the question, is 32bit better than 64bit or do I not >> understand the issue? >> >> Thank you for your feedback. >> >> Keith >> >> ------------------------ >> Keith Smith >> >> >> >> > Rule of thumb for servers: use a 64-bit host (PVE for example), and > virtualize everything to run under it. Use 32-bit for KVMs unless they need > >3G of RAM. OpenVZ contains will of course run 64-bit, as they share the > kernel. > > There are no doubt exceptions to this, but it's a good start. > > For a LEMP server, you may want to consider separating EMP into 3 separate > hosts. Doing it this way, you could have both a PHP51 host and a PHP53 host > (LEMPP?), and let your (E)nginx host determine which one to use based on > the url (reverse proxy configuration). > > Having things on a virtual platform opens up a lot of possibilities you > don't have otherwise. The list is extensive. :) > > -- > -Eric 'shubes' > > ------------------------------**--------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.phxlinux.**org > To subscribe, unsubscribe, or to change your mail settings: > http://lists.phxlinux.org/**mailman/listinfo/plug-discuss > The main difference between a programmer and a systems administrator/architect is the ability to think in 3 dimensions, as demonstrated by Shubes analysis of 64bit/32bit systems. Programmers generally drill down; while systems people have a deeper, wider analysis. -- (503) 754-4452 Android (623) 239-3392 Skype (623) 688-3392 Google Voice ** it-clowns.com Chief Clown