• Huacai Chen's avatar
    LoongArch: Add qspinlock support · 5f1e001b
    Huacai Chen authored
    On NUMA system, the performance of qspinlock is better than generic
    spinlock. Below is the UnixBench test results on a 8 nodes (4 cores
    per node, 32 cores in total) machine.
    
    A. With generic spinlock:
    
    System Benchmarks Index Values               BASELINE       RESULT    INDEX
    Dhrystone 2 using register variables         116700.0  449574022.5  38523.9
    Double-Precision Whetstone                       55.0      85190.4  15489.2
    Execl Throughput                                 43.0      14696.2   3417.7
    File Copy 1024 bufsize 2000 maxblocks          3960.0     143157.8    361.5
    File Copy 256 bufsize 500 maxblocks            1655.0      37631.8    227.4
    File Copy 4096 bufsize 8000 maxblocks          5800.0     444814.2    766.9
    Pipe Throughput                               12440.0    5047490.7   4057.5
    Pipe-based Context Switching                   4000.0    2021545.7   5053.9
    Process Creation                                126.0      23829.8   1891.3
    Shell Scripts (1 concurrent)                     42.4      33756.7   7961.5
    Shell Scripts (8 concurrent)                      6.0       4062.9   6771.5
    System Call Overhead                          15000.0    2479748.6   1653.2
                                                                       ========
    System Benchmarks Index Score                                        2955.6
    
    B. With qspinlock:
    
    System Benchmarks Index Values               BASELINE       RESULT    INDEX
    Dhrystone 2 using register variables         116700.0  449467876.9  38514.8
    Double-Precision Whetstone                       55.0      85174.6  15486.3
    Execl Throughput                                 43.0      14769.1   3434.7
    File Copy 1024 bufsize 2000 maxblocks          3960.0     146150.5    369.1
    File Copy 256 bufsize 500 maxblocks            1655.0      37496.8    226.6
    File Copy 4096 bufsize 8000 maxblocks          5800.0     447527.0    771.6
    Pipe Throughput                               12440.0    5175989.2   4160.8
    Pipe-based Context Switching                   4000.0    2207747.8   5519.4
    Process Creation                                126.0      25125.5   1994.1
    Shell Scripts (1 concurrent)                     42.4      33461.2   7891.8
    Shell Scripts (8 concurrent)                      6.0       4024.7   6707.8
    System Call Overhead                          15000.0    2917278.6   1944.9
                                                                       ========
    System Benchmarks Index Score                                        3040.1
    Signed-off-by: default avatarRui Wang <wangrui@loongson.cn>
    Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
    5f1e001b
spinlock.h 271 Bytes