Topic: Performance impact of Spectre and Meltdown patches
Does RME or somebody else have any idea what the performance impact is for the upcoming
Windows / BIOS upgrades against Spectre and Meltdown ?
Especially the patches against Spectre Variant 2 shall have a performance impact on i/o intensive applications (Server Systems, Databases) and the impact shall vary with the age of CPU. On more modern CPUs it shall have less performance impact compared to older ones (Haswell and older)
What I question myself is, how this impacts the performance for us folks doing recordings ?
- Does it increase the DPC latency ?
- Is the system still able to work with very low ASIO buffersizes on a given project or do they need to be increased ?
- Does it have impact on RME ASIO driver level ?
What do other folks ? The security consultants at my customer strongly recommend the upgrade.
They also will do it for their private systems.
The patch against Spectre version 2 has 2 components
- OS (Operating System) patch
- requires BIOS upgrade to upgrade the microcode of CPU (to make the OS patch work)
I am just asking the vendor of my mainboard (supermicro) whether its possible to make a microcode downgrade,
shall it turn out that the impact is not so nice, i.e. by flashing the old BIOS.
Am not sure whether BIOS makes only upgrades of CPU microcode or whether it can also downgrade...
I will report back here once I get a reply.
I hope I do not sound too pessimistic. Maybe this isn't a real issue for us at all.
I would be very thankful if you could share your experience here...
Especially shall you have the ability to test this on a test system before and after patches.
For my mainboard a BIOS upgrade is still due.
Many thanks !
Some upgrades on this topic here:
https://www.heise.de/newsticker/meldung … 37462.html
Win7/Cub9.5, Supermicro X10SRi-F, E5-1650v3, Sonnet USB3-PRO-4PM-E