z1ppy – Member
yep was told about this earlier, not sure if the article mentioned it but potentially 2-30% performance hit, though I believe the 30% is only for (very) specialist tasks in linux.
Anything that does a significant amount of system calls (i.e. mostly everything) will be affected. 30% seems unlikely except for very odd workloads though.
Must say I’m not overly impressed with Intel of late, after this and learning of the IME exploits.
ETA: if i’m reading the postgres example correctly, what they’re timing is how fast their DB can connect and essentially do nothing (well, return a 1 anyway), and it’s over a loop back, so no network overhead, minimal work to parse the sql and no i/o. In other words it’s probably not too relevant to most database applications.