On 2020/7/6 15:10, lampahome wrote:
> I tried to test  performance with f2fs and create many fio to test it.
> 
> I found when fio reach a number(e.g. 25 fio), the performance degrade
> not in proportional with small number
> 
> EX:
> 5 fio: bandwidth 300MB/s
> 10 fio: bandwidth 150MB/s
> 25 fio: bandwidth 30MB/s

What's your buffer size for each flush?

> 
> I wonder many trigger the gc or checkpoint, may I know if it running
> foreground or background?

cat /sys/kernel/debug/f2fs/status |grep CP

and

cat /sys/kernel/debug/f2fs/status |grep GC

> 
> 
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