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author | Eric Dumazet <edumazet@google.com> | 2012-06-08 05:03:21 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2012-06-08 14:27:23 -0700 |
commit | 7123aaa3a1416529ce461e98108e6b343b294643 (patch) | |
tree | 094070a521666979523411422109cce72a1db8c4 /net/wireless/ethtool.h | |
parent | 54db0cc2ba0d38166acc2d6bae21721405305537 (diff) | |
download | linux-next-7123aaa3a1416529ce461e98108e6b343b294643.tar.gz |
af_unix: speedup /proc/net/unix
/proc/net/unix has quadratic behavior, and can hold unix_table_lock for
a while if high number of unix sockets are alive. (90 ms for 200k
sockets...)
We already have a hash table, so its quite easy to use it.
Problem is unbound sockets are still hashed in a single hash slot
(unix_socket_table[UNIX_HASH_TABLE])
This patch also spreads unbound sockets to 256 hash slots, to speedup
both /proc/net/unix and unix_diag.
Time to read /proc/net/unix with 200k unix sockets :
(time dd if=/proc/net/unix of=/dev/null bs=4k)
before : 520 secs
after : 2 secs
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/wireless/ethtool.h')
0 files changed, 0 insertions, 0 deletions