Backlog not working with kernel 3.10

AFAIK, the purpose of the backlog (a queue of audit events in the kernel) is to assure no events are lost when events are generated at a faster speed than they are consumed. I'm using CentOS7 with kernel 3.10.0-1160.15.2.el7.x86_64 and trying to test the backlog, but it seems it's not working at all. Audit rule: -a always,exit -F dir=/sasdata -F arch=b64 -S creat -S open -S openat -S unlink -S unlinkat -S symlink -S symlinkat -S link -S linkat -S rename -S renameat -S chmod -S fchmod -S fchmodat -S chown -S fchown -S fchownat -S mkdir -S mkdirat -S rmdir -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -k filesystem_op First I turned auditd off so that events are not consumed: # service stop auditd Then I make sure that the backlog size is greater than 0: # auditctl -s enabled 1 failure 1 pid 0 rate_limit 5000 backlog_limit 8192 lost 0 backlog 0 loginuid_immutable 0 unlocked I have run some simple commands in /data that should be logged , e.g. touch file, mkdir dir. Finally, I have run auditctl-s and expected to see the backlog events counter go up, but it's still 0. If I start auditd again, the events are never logged. Am I missing something here? Thanks in advance.