lorneli

1.Test environment
  4core 2gb (use 4core so background fsync thread used by AOF_FSYNC_EVERYSEC can execute on other core)
  ubuntu server 14.04
  redis-version: 3.2.8
  
2.Procedure
  Disable rdb bgsave, aof rewrite in config to avoid other factors
  Set 'appendfsync' entry tto 'no', 'everysec' and 'always' in turn
  
  for each policy:

lorneli

Since redis uses single thread to process client requests one by one, storing large value for a key blocks others.
I tested how long this takes in different size value.

1.Test environment
  4core 2gb
  ubuntu server 14.04
  redis-version: 3.2.8
  
2.Procedure
  Disable persistence.

lorneli

package node

const elemSize = 128

type node struct {
	inodes []*inode
}

type inode struct {
	k []byte