Lonni J Friedman <netll...@gmail.com> wrote: > top shows over 90% of the load is in sys space. vmstat output > seems to suggest that its CPU bound (or bouncing back & forth):
Can you run `perf top` during an episode and see what kernel functions are using all that CPU? This looks similar to cases I've seen of THP defrag going wild. Did the OS version or configuration change? Did the PostgreSQL memory settings (like shared_buffers) change? -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
