[OpenERP 7.0] Windows to Debian slowly work

Very slowly database work after migrate on debian.
Log: all ok.
Where finde mistake of configuration?
openerp-server.conf and configure postgresql 1:1 same windows & debian, but debian very very slowly work after restore database.

ssory my english :|

root@debian:~# free
                   total used free shared buffers cached
Mem: 7903296 2177940 5725356 0 175452 1023532
-/+ buffers/cache: 978956 6924340
Swap: 15434744 0 15434744

root@debian:~# slabtop
 Active / Total Objects (% used) : 516259 / 523908 (98.5%)
 Active / Total Slabs (% used) : 11865 / 11865 (100.0%)
 Active / Total Caches (% used) : 59 / 72 (81.9%)
 Active / Total Size (% used) : 136226.61K / 137731.44K (98.9%)
 Minimum / Average / Maximum Object : 0.01K / 0.26K / 8.00K

root@debian:~# top
top - 13:48:19 up 2 days, 10:25, 2 users, load average: 0.00, 0.01, 0.00
Tasks: 230 total, 1 running, 228 sleeping, 0 stopped, 1 zombie
Cpu(s): 0.0%us, 0.1%sy, 0.0%ni, 99.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 7903296k total, 2178284k used, 5725012k free, 175472k buffers
Swap: 15434744k total, 0k used, 15434744k free, 1023584k cached

root@debian:~# vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r b swpd free buff cache si so bi bo in cs us sy id wa
 1 0 0 5725316 175472 1023584 0 0 0 15 21 15 1 0 99 0

postgresql.conf:
max_connections = 140
shared_buffers = 1GB
work_mem = 16MB
maintenance_work_mem = 1GB
fsync = off
full_page_writes = off
wal_buffers = 8MB
checkpoint_segments = 128
checkpoint_timeout = 60s
random_page_cost = 2.0
cpu_tuple_cost = 0.0030
cpu_index_tuple_cost = 0.0010
cpu_operator_cost = 0.0005
effective_cache_size = 6GB