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| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-11-25 21:16:35 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-25 21:16:35 -0800 |
| commit | 1748376b6626acf59c24e9592ac67b3fe2a0e026 (patch) | |
| tree | 65a28205daf1ca92e31389440764fc407365014e /net/ipv4/proc.c | |
| parent | c1b56878fb68e9c14070939ea4537ad4db79ffae (diff) | |
| download | linux-1748376b6626acf59c24e9592ac67b3fe2a0e026.tar.bz2 | |
net: Use a percpu_counter for sockets_allocated
Instead of using one atomic_t per protocol, use a percpu_counter
for "sockets_allocated", to reduce cache line contention on
heavy duty network servers.
Note : We revert commit (248969ae31e1b3276fc4399d67ce29a5d81e6fd9
net: af_unix can make unix_nr_socks visbile in /proc),
since it is not anymore used after sock_prot_inuse_add() addition
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/proc.c')
| -rw-r--r-- | net/ipv4/proc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index 731789bb499f..4944b47ad628 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -55,7 +55,8 @@ static int sockstat_seq_show(struct seq_file *seq, void *v) seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n", sock_prot_inuse_get(net, &tcp_prot), atomic_read(&tcp_orphan_count), - tcp_death_row.tw_count, atomic_read(&tcp_sockets_allocated), + tcp_death_row.tw_count, + (int)percpu_counter_sum_positive(&tcp_sockets_allocated), atomic_read(&tcp_memory_allocated)); seq_printf(seq, "UDP: inuse %d mem %d\n", sock_prot_inuse_get(net, &udp_prot), |