Dependencies:

1. refer to README-forMem.md
2. pmdk

sudo apt-get install libevent-dev
sudo apt-get install libconfig-dev
sudo apt-get install libpmem1 librpmem1 libpmemblk1 libpmemlog1 libpmemobj1 libpmempool1
sudo apt-get install libpmem-dev librpmem-dev libpmemblk-dev libpmemlog-dev libpmemobj-dev libpmempool-dev libpmempool-dev
sudo apt-get install libpmem1-debug librpmem1-debug libpmemblk1-debug libpmemlog1-debug libpmemobj1-debug libpmempool1-debug

Major Modifications

• memcached.h

  • modifications about item struct, temperature levels definition

• item.c, slab.c

  • modifications about Lazy LRU and partitioned memory management
  • adding NVM slabs

• storage.c

  • modifications about data swapping:
    • data eviction
      • nvm_write_thread: DRAM to NVM
      • storage_write_thread: NVM to SSD
    • data fecthing
      • nvm_swap_thread: DRAM to NVM
      • _swap_thread: SSD to NVM or DRAM

• extstore,c

  • encapsulation of SSD operations

• memcached.c:

  • add test method to run the YCSB benchmark

Compile

./autogen.sh
./configure  heat_count=2 clock_interval=10000 nvm_dram=8
./make

parameters for configure:

• nvm_as_dram=yes : the Anti-2 variant
• mem_mod=yes : the Anti-NVM variant

Genenrate data

./memcached_client/workloads/generate_all_workloads.sh 

Config file

config.cfg: which will be read by the program automatically and should be in the same path as the executable file. The following is an example.

# recordcount in YCSB config file
LOAD_SIZE = 50000000

# operationcount in YCSB config file
TXN_SIZE = 100000000

# path of the data files generated in the former step
LOAD_FILE = "memcached_client/workloads/data/loadc_zipf_int_50M.dat" 

TXN_FILE = "memcached_client/workloads/data/txnsc_zipf_int_50M.dat"

run

./memcached -m 4096 -o nvm_path=nvm.bin:32G -o ext_path=ssd.bin:120G  -t 32 -o ext_threads=8 2>out

parameters:

-m : DRAM size in MB (-m 4096--> 4GB DRAM)

-o nvm_path : location and size of NVM file (nvm.bin:16G --> 16GB NVM file located at nvm.bin)

-o ext_path : location and size of SSD file (ssd.bin:120G --> 120GB SSD file located at ssd.bin)

-t : number of workers

-o ext_threads : number of evicting threads

others : Memcached parameters, please refer to README-forMem.md

result can be found in ./log file