4 ms·
I find the first graph peculiar on its own. Supposedly, each line is the load on one of 8 cores on the same machine. Why would some cores experience heavier loa
by teraflop 12y ago
I find the first graph peculiar on its own. Supposedly, each line is the load on one of 8 cores on the same machine. Why would some cores experience heavier load than others, very consistently, over the course of a day? I've never seen a workload exhibit that kind of long-term, core-level affinity on Linux.
- wmf 12y agoThis sounds like RSS or flow director gone horribly wrong.
- yxhuvud 12y agoWell, the obvious reason for such a graph is that the network load balancing between several waiting worker processes isn't symmetrical.
- teraflop 12y agoEven if that was the case, there isn't normally a stable mapping between processes and physical cores. There would have to be something within the kernel itself that gives higher priority to some cores than others. Not saying that's impossible, but I've worked on machines with more than 8 cores and never seen it happen.