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/LinuxSo 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?