Hi, On Fri, 05 Aug 2022 07:59:18 +0200 Dan Čermák wrote:
dieter writes:
Hi,
On Thu, 04 Aug 2022 18:40:23 +0200 Martin Jambor wrote:
Are there some data available about the actual benefit of this change?
Over the weekend, I have quickly gathered some SPEC CPU benchmarks results comparing the different x86_64 versions:
thanks, very interesting results. I admit this gain is even less than I expected.
Yes, the gain is small, but a few percent gain will result in e.g. HPC users to pick another distribution. But yeah, the gain in these benchmarks is really surprisingly small.
Actually these gains are so small that I personally would conclude that it makes no sense to switch to -v2 or even -v3. There are even benchmarks in which the -v3 code is "significantly" slower - in the scope of measured differences. For HPC use cases I assume these users would compile the performance relevant libraries and programs really optimized for their very hardware. For many users the CPU is idle most of the time. For them a speed improvement of 2% or even 20% is hardly noticeable. Even for developers - I think if the build time of a project drops from 100 minutes to 98 minutes most of the time does not matter. Of course this is my personal opinion and others may have different priorities and every saved second my be essential to them. About running Tumbleweed on PCs older than 10 years: compared to PCs from 20 years ago these machines can be horrendously fast. And they can still perfectly fulfill many tasks. Tumbleweed is a good distribution and provides current software and security updates, so why not. I do not know what hardware most of the openSUSE user base is using. But from my own case switching to -v2 or higher would mean I can no longer use Tumbleweed on a machine, or at least would not get security updates or bugfixes anymore if I just stay at a snapshot which still works. Kind regards, Dieter