Desktop froze

Ralf Mardorf kde.lists at yahoo.com
Mon Jun 12 16:11:56 UTC 2023


Hi,

some claim that there is no CPU cores or threads to RAM size ratio,
other claim that some ratio thumb rules are industry standards for
balanced systems.

It depends on the tasks. Some tasks might need a lot of CPU, but less
RAM resources or vice versa, while other tasks require a balanced mix of
resources.

To avoid bottlenecks on averaged, not specialist desktop PCs assuming a
balanced mix of resources IMO is the best thumb rule.

Taking a look at the past, a lot of users likely experienced a balanced
system for 2-core CPUs (no hyper-threading) with at least 2 GiB, but
more likely 4 GiB or 8 GiB of RAM.

A i7 has got 16 cores/24 threads.

So in the past we usually use  >= 1 GiB per core or thread.

12 GiB / 16 cores   = 0.75 GiB/core
12 GiB / 24 threads = 0.50 GiB/thread

This isn't a too useful calculation, due to some unconsidered factors.

However, IMO it shows a raw picture of a sane ratio. The architecture of
old and new PCs are quite close to each other, the new CPUs still suffer
from Meltdown and Spectre, CPU power as well as RAM speed increased and
so did software bloat.

Since by more or less same architecture everything increased, the core
to thread ratio IMO should increase as well. Anything else isn't
impossible, but not much likely.

The ratio used by the OP did decrease, while anything else increased.
That seems unreasonable too me.

Hardware bottlenecks might or might not interact with software race
conditions.

A tower case PC can stand stable without falling over easily if the
center of gravity is at the top, but I still build my tower case PCs
with the center of gravity as close to the floor as possible, at least
off the center.

There are no valid rules for all cases of usage, but if something fishy
happens, I would consider the culprit could be related to what the raw
picture shows.

Regards,
Ralf



More information about the ubuntu-users mailing list