we are using cloud server *this are memory info*
free -h total used free shared buffers cached Mem: 15G 15G 197M 194M 121M 14G -/+ buffers/cache: 926M 14G Swap: 15G 32M 15G *this are disk info:* df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 20G 1.7G 17G 10% / devtmpfs 7.9G 0 7.9G 0% /dev tmpfs 7.9G 4.0K 7.9G 1% /dev/shm tmpfs 7.9G 17M 7.9G 1% /run tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup /dev/mapper/vgzero-lvhome 99G 189M 94G 1% /home /dev/mapper/vgzero-lvdata 1.2T 75G 1.1T 7% /data /dev/mapper/vgzero-lvbackup 296G 6.2G 274G 3% /backup /dev/mapper/vgzero-lvxlog 197G 61M 187G 1% /pg_xlog /dev/mapper/vgzero-lvarchive 197G 67G 121G 36% /archive i allocated memory as per following list: shared_buffers = 2GB (10-30 %) effective_cache_size =7GB (70-75 %) ---->>(shared_buffers+page cache) for dedicated server only work_mem = 128MB (0.3-1 %) maintenance_work_mem = 512MB (0.5-4 % ) temp_Buffer = 8MB ---->>default is better( setting can be changed within individual sessions) checkpoint_segments = 64 checkpoint_completion_target = 0.9 random_page_cost = 3.5 cpu_tuple_cost = 0.05 wal_buffers = 32MB leave this default 3% of shared buffer is better is it better or do i want to modify any thing our server is getting too slow again and again please give me a suggestion