--On 16. April 2009 10:58:15 +1000 Rob Mueller <robm@xxxxxxxxxxx> wrote:
http://blog.fastmail.fm/2007/09/21/reiserfs-bugs-32-bit-vs-64-bit-kernel s-cache-vs-inode-memory/ Anyone have any specific thoughts? Is there any other benefit we might see from large memory allocation in 64-bit architecture?Given that I wrote that blog post, I can only tell you that in our environment, 64-bit kernels made a big difference.
I wonder if ext3 behaves differently, Red Hat's 32-bit behaves differently, or if something altogether different is going on. We are currently running RHEL 3 in 32-bit mode, our servers have 16 GB, and most of it is used for caching:
# free
total used free shared buffers cached
Mem: 16214344 16197612 16732 0 86944 13415172
-/+ buffers/cache: 2695496 13518848
Swap: 4192944 8436 4184508
So it would seem that a 64-bit kernel wouldn't improve on that, right? Or
is that a difference between 2.4 and 2.6?
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