Plor (general transactions with predictable, low tail latency)

Plor is based on DBx1000, which is a single node OLTP database management system (DBMS).

Download

git clone --recursive https://github.com/chenyoumin1993/Plor

Dependencies

# for jemalloc 
apt-get install libjemalloc-dev

# for cityhash
cd cityhash
./configure
make -j
make install

# for masstree
cd silo/masstree
./configure
make -j

Build & Test

To build the database.

make -j

Configuration

DBMS configurations can be changed in the config.h file. Please refer to README for the meaning of each configuration. Here we only list several most important ones.

CORE_CNT        : Number of worker threads running in the database.
WORKLOAD          : Supported workloads include YCSB and TPCC
CC_ALG            : Concurrency control algorithm. Seven algorithms are supported (NO_WAIT WAIT_DIE WOUND_WAIT PLOR HLOCK SILO MOCC)

                    

Run

The DBMS can be run with

./rundb

Output

TP: throughput
LAT@P99: 99th percentile latency
ABT@P99: 99th percentile abort count