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Eric Dumazet acb32ba3de ipv4: reduce percpu needs for icmpmsg mibs ... Reading /proc/net/snmp on a machine with a lot of cpus is very expensive (can be ~88000 us). This is because ICMPMSG MIB uses 4096 bytes per cpu, and folding values for all possible cpus can read 16 Mbytes of memory. ICMP messages are not considered as fast path on a typical server, and eventually few cpus handle them anyway. We can afford an atomic operation instead of using percpu data. This saves 4096 bytes per cpu and per network namespace. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		13 years ago
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conntrack.h	atomic: use <linux/atomic.h>	14 years ago
core.h	…
dccp.h	…
generic.h	…
hash.h	…
ipv4.h	net: ipv4: add IPPROTO_ICMP socket kind	14 years ago
ipv6.h	…
mib.h	ipv4: reduce percpu needs for icmpmsg mibs	13 years ago
packet.h	…
unix.h	…
x_tables.h	…
xfrm.h	…