CPU increase since 24.7.11

[9axqe]

Since yesterday's upgrade to 24.7.11_2 (on a DEC695, from 24.7.10_1), my userspace CPU consumption increased significantly, see attachment.

I tried using htop, I see flowd_aggregate.py and update_tables.py consuming a lot of CPU, but it's very jumpy, it's hard to tell if that's these two. There isn't a process constantly consuming 10-20% CPU.

My initial question: how can I filter for userspace processes in htop? I tried adding "!KERNEL" as filter in htop, but it doesn't match any process, the list becomes empty.

Any other idea to narrow down the pool of suspects?