说明:一般产品都会标明:从USB接口的Flash存储器读取数据的速度不低于600KB/S.
我的方法(编程):从闪存盘拷贝一个30MB的文件,每次读1KB写到硬盘上。然后统计所用时间。做除法得到速率,但是一般都在33792KB/S。我的方法是否有问题?速度也太快了吧?
我的方法(编程):从闪存盘拷贝一个30MB的文件,每次读1KB写到硬盘上。然后统计所用时间。做除法得到速率,但是一般都在33792KB/S。我的方法是否有问题?速度也太快了吧?
Open "f:\1K.txt" For Binary Access Read As sourcefile3
Open "c:\zjgl.txt" For Binary Access Write As sourcefile2
ReDim bytedata(1 To LOF(sourcefile3))temp_old = CDate(Now)
For i = 1 To 30
Get sourcefile1, , bytedata()
Put sourcefile2, , bytedata()
Next i
Close sourcefile1
Close sourcefile2
close sourcefile3
temp_new = CDate(Now)
temp_sub = CDate(temp_new - temp_old)
temp_s = Second(temp_sub)
temp_h = Hour(temp_sub)
temp_m = Minute(temp_sub)
temp_h = (temp_h * 3600)
temp_m = (temp_m * 60)
temp_sum = temp_s + temp_h + temp_m
temp_num1 = total_num * 1024
temp_div = temp_num1 / temp_sum
Open "f:\30M.txt" For Binary Access Read As sourcefile1
Open "f:\1K.txt" For Binary Access Read As sourcefile3
Open "c:\zjgl.txt" For Binary Access Write As sourcefile2
ReDim bytedata(1 To LOF(sourcefile3))temp_old = CDate(Now)
For i = 1 To (30*1024)
Get sourcefile1, , bytedata()
Put sourcefile2, , bytedata()
Next i
Close sourcefile1
Close sourcefile2
close sourcefile3
temp_new = CDate(Now)
temp_sub = CDate(temp_new - temp_old)
temp_s = Second(temp_sub)
temp_h = Hour(temp_sub)
temp_m = Minute(temp_sub)
temp_h = (temp_h * 3600)
temp_m = (temp_m * 60)
temp_sum = temp_s + temp_h + temp_m
temp_num1 = total_num * 1024
temp_div = temp_num1 / temp_sum
ReDim bytedata(1 To 1024)temp_old = timertemp_new = timertemp_sum =temp_new-temp_old删除这些
temp_sub = CDate(temp_new - temp_old)
temp_s = Second(temp_sub)
temp_h = Hour(temp_sub)
temp_m = Minute(temp_sub)
temp_h = (temp_h * 3600)
temp_m = (temp_m * 60)