shared_memory_locking failed to mlock

[Gordon Hsiao <capcoding@xxxxxxxxx>]

Just upgraded squid to 4.1, however if I enabled shared_memory_locking I failed to start squid:

"FATAL: shared_memory_locking on but failed to mlock(/squid-tls_session_cache.shm, 2101212): (12) Out of memory"

How do I know how much memory it is trying to mlock? is 2101212(~2MB) the shm size of not, any way to debug/looking-into/config this size?

Again I disabled cache etc for a memory restricted environment, also used the minimal configuration with a few enable-flags, in the meantime I want to avoid memory overcommit from squid(thus mlock)

Regards,

Gordon

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