On Mon, May 13, 2019 at 10:58:45AM +0200, Lothar Schilling wrote:
Am 13.05.2019 um 10:51 schrieb Tixy:
On Mon, 2019-05-13 at 10:30 +0200, Lothar Schilling wrote:
[...]
# uname -a
Linux [my.server.com] 4.9.0-9-686-pae #1 SMP Debian 4.9.168-1
(2019-04-12) i686 GNU/Linux
So you're running a 32-bit system, not 64-bit. Is that because you're
running on very old hardware or a decision for some other reason?
Neither old hardware nor deliberate decision - just plain stupid. But
would it really matter?
It can--when using that much RAM on a 32 bit kernel you need to use PAE,
which adds significant overhead for certain operations vs a 64 bit
kernel--especially if it's old enough that meltdown mitigations
significantly impact context switching performance. "Intel Xeon CPU
2.40GHz with 4 cores" applies to chips a decade old by now; what
is the actual CPU model?
