Commits on May 31, 2024

1. Introduce RDMA transport …

   Main changes in this patch:
   * implement server side of connection module only, this means we can *NOT*
     compile RDMA support as built-in.
   * add necessary information in README.md
   * support 'CONFIG SET/GET', for example, 'CONFIG Set rdma.port 6380', then
     check this by 'rdma res show cm_id' and valkey-cli(with RDMA support,
     but not implemented in this patch)
   * the full listeners show like():
       listener0:name=tcp,bind=*,bind=-::*,port=6379
       listener1:name=unix,bind=/var/run/valkey.sock
       listener2:name=rdma,bind=xx.xx.xx.xx,bind=yy.yy.yy.yy,port=6379
       listener3:name=tls,bind=*,bind=-::*,port=16379
   
   valgrind test works fine:
   valgrind --track-origins=yes --suppressions=./src/valgrind.sup
            --show-reachable=no --show-possibly-lost=no --leak-check=full
            --log-file=err.txt ./src/valkey-server --port 6379
            --loadmodule src/valkey-rdma.so port=6379 bind=xx.xx.xx.xx
            --loglevel verbose --protected-mode no --server_cpulist 2
            --bio_cpulist 3 --aof_rewrite_cpulist 3 --bgsave_cpulist 3
            --appendonly no
   
   performance test:
   server side: ./src/valkey-server --port 6379 # TCP port 6379 has no conflict with RDMA port 6379
                --loadmodule src/valkey-rdma.so port=6379 bind=xx.xx.xx.xx bind=yy.yy.yy.yy
                --loglevel verbose --protected-mode no --server_cpulist 2 --bio_cpulist 3
                --aof_rewrite_cpulist 3 --bgsave_cpulist 3 --appendonly no
   
   build a valkey-benchmark with RDMA support(not implemented in this patch), run
   on a x86(Intel Platinum 8260) with RoCEv2 interface(Mellanox ConnectX-5):
   client side: ./src/valkey-benchmark -h xx.xx.xx.xx -p 6379 -c 30 -n 10000000 --threads 4
                -d 1024 -t ping,get,set --rdma
   ====== PING_INLINE ======
   480561.28 requests per second, 0.060 msec avg latency.
   
   ====== PING_MBULK ======
   540482.06 requests per second, 0.053 msec avg latency.
   
   ====== SET ======
   399952.00 requests per second, 0.073 msec avg latency.
   
   ====== GET ======
   443498.31 requests per second, 0.065 msec avg latency.
   
   Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>

   

   pizhenwei committed May 31, 2024
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