hello community ,
I upgraded my kernel from version 3.xx to 5.10, but I've noticed a performance degradation in read and write operations to RAM
test in kernel 3.12 :
time dd if=/dev/zero count=1024000 bs=1 of=/tmp/v
1024000+0 records in
1024000+0 records out
real 0m 16.65s
user 0m 1.49s
sys 0m 14.95s
test in kernel 5.10 :
$ time dd if=/dev/zero count=1024000 bs=1 of=/tmp/v
1024000+0 records in
1024000+0 records out
real 0m 50.31s
user 0m 2.92s
sys 0m 42.94s
does anyone know twhat'is the problem in kernel?
