From: Stephen Hemminger <step...@networkplumber.org> Date: Mon, 26 Feb 2018 13:46:13 -0800
> This is ancient original iproute2 code that dumpster dives into > slabinfo to get summary statistics on active objects. > > 1) open sockets (sock_inode_cache) The sockets inuse counter from /proc/net/sockstat is really sufficient for this. > 2) TCP ports bound (tcp_bind_buckets) [*] > 3) TCP time wait sockets (tw_sock_TCP) [*] Time wait is provided by /proc/net/sockstat as well. > 4) TCP syn sockets (request_sock_TCP) [*] It shouldn't be too hard to fill in the last two gaps, maintaining a counter for bind buckets and request socks, and exporting them in new /proc/net/sockstat field. That would be so much better than disabling a useful optimization in the SLAB allocator. Thank you.
