Eric Dumazet wrote:
Hello David and Stephen
I see git commit 8e2101a9faab43dcf307d46784a1ede7997fe729
and its potential problems :
Here on my x86_64 machine :
ffffffff806e7520 d rtnl_mutex
ffffffff806e7538 D net_msg_cost
ffffffff806e753c D net_msg_burst
ffffffff806e7540 D net_msg_warn
ffffffff806e7560 d lweventlist_lock
It probably is worth making a hot/cold map somehow. Ideally some
automated version
of something like oprofile uses (memprofile?)
So net_msg_{cost|burst|warn} are on two 'heavy' cachelines.
I gently ask that any new sysctl is '__read_mostly' tagged.
Why not all the old one's as well?
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