Linux 什么'；“的意思是什么；“最小值”；及；吞吐量“；在IOzone的输出中

我是IOzone的新用户，当我使用命令运行IOzone时：

/IOzone-i0-i1-t2-t

，它会生成以下结果（部分）：

我对“吞吐量”和“Min-xfer”的含义感到困惑，有人能帮我吗？

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顺便问一下，为什么孩子和父母的吞吐量不同？谢谢

minxfer是指一次写入的最小数据量。“每个线程在4 KB的记录中写入一个512 KB的文件”

因此，如果最小xfer为512.00kb，它会立即将整个实际文件写入磁盘（将所有4kbyte记录分组在一起）

由于操作系统I/O缓冲，子级和父级吞吐量不同。iozone不强制直接（非缓冲）读写吞吐量测试。您真正测试的是系统的缓冲区缓存+磁盘缓存+磁盘速度组合

Command line used: ./iozone -i 0 -i 1 -t 2 -T
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
Throughput test with 2 threads
Each thread writes a 512 Kbyte file in 4 Kbyte records

Children see throughput for  2 initial writers  =  650943.69 KB/sec
Parent sees throughput for  2 initial writers   =   13090.24 KB/sec
Min throughput per thread           =  275299.72 KB/sec 
Max throughput per thread           =  375643.97 KB/sec
Avg throughput per thread           =  325471.84 KB/sec
Min xfer                    =     356.00 KB

Children see throughput for  2 rewriters    = 1375881.50 KB/sec
Parent sees throughput for  2 rewriters     =   10523.74 KB/sec                                                
Min throughput per thread           = 1375881.50 KB/sec 
Max throughput per thread           = 1375881.50 KB/sec
Avg throughput per thread           =  687940.75 KB/sec
Min xfer                    =     512.00 KB

Children see throughput for  2 readers      = 2169601.25 KB/sec
Parent sees throughput for  2 readers       =   27753.94 KB/sec
Min throughput per thread           = 2169601.25 KB/sec 
Max throughput per thread           = 2169601.25 KB/sec
Avg throughput per thread           = 1084800.62 KB/sec
Min xfer                    =     512.00 KB

Children see throughput for 2 re-readers    = 2572435.25 KB/sec
Parent sees throughput for 2 re-readers     =   26311.78 KB/sec
Min throughput per thread           = 2572435.25 KB/sec 
Max throughput per thread           = 2572435.25 KB/sec
Avg throughput per thread           = 1286217.62 KB/sec
Min xfer                    =     512.00 KB

iozone test complete.