On 2/10/25 12:44 AM, Lev Yudalevich wrote:
My first PC has i7-6700K @ 4.00GHz x 8 CPU, 32GiB RAM
My second PC has i7-10700 @ 2.90GHz x 16 CPU, 64GiB RAM
Both machines have identical OS installation (Ubuntu 22.04.5 LTS) rest
of the software (toolchains etc).
However, running Valgrind (version 3.25.0.GIT) with the same test
program on a second (presumably more powerful) machine is more than
twice slower than running the same on the first machine.
Run "sudo dmidecode >dmidecode.out" and compare the cache sizes and
associativity. Run "grep cache /proc/cpuinfo". Also run "lscpu".
What is the TLB size? Boot the standalone memtest86+ and check
the measured speed of caches and RAM.
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