Hello,
> Can you run oprofile on the older kernel, so that we can compare and see
> where the time is spent?
> Looks like over 7% of the time is spent in s_lock, which suggests some change
> in behavior in context switching or something like that, but let's see what
> the old profile looks like
Hello folks,
I've been playing around today a lot with sysbench, and observed that 2.6.32
kernel supplied by Ubuntu is having perf regression with PG (which does not
affect MySQL), compared to 2.6.28 builds I have.
What I observed can be seen in a paste at
http://p.defau.lt/?8_GQV82Pz3_SDZbNOdP
Hello,
I've got some strange vacuum full behaviour. I've got a table:
flows=# explain select * from data;
QUERY PLAN
---
Seq Scan on data (cost=0.00..5045547.76 rows=236174576 width=55) (1 row)
That i
