We are moving from Development to Production. Can you please specify what are the recommended kernel versions to run on 32bit system with 32GB+ memory. <br><br>Would you recommend a PAE Kernel on GFS cluster?<br>Would you recommend 64bit over 32bit version, if so why?<br>
<br>Our Experience so far:<br>1) We have new HP Proliant 385 servers with 32bit RHEL5 where non PAE kernel sees all the memory (32GB).<br>2) In our test environment recent update to kernel 2.6.18-128.4.1.el5 we were unable to register all the memory and PAE kernel gave us problems when mounting GFS.<br>
<br>[root@dev02 log]# dmidecode | grep -i "Range Size" ; uname -a; free -m<br> Range Size: 12 GB<br> Range Size: 3932161 kB<br> Range Size: 3932161 kB<br> Range Size: 4 GB<br> Range Size: 4 GB<br>
Range Size: 4 GB<br> Range Size: 4 GB<br> Range Size: 1 kB<br> Range Size: 1 kB<br>Linux <a href="http://dev02.foo.com">dev02.foo.com</a> 2.6.18-128.4.1.el5 #1 SMP Thu Jul 23 19:59:17 EDT 2009 i686 i686 i386 GNU/Linux<br>
total used free shared buffers cached<br>Mem: 3674 3534 140 0 229 2818<br>-/+ buffers/cache: 486 3188<br>Swap: 12286 0 12285<br>
[root@dev02 log]# <br><br clear="all"><br>-- <br>Alan A.<br>