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| author |   Holger Eitzenberger <heitzenberger@astaro.com> | 2006-02-04 02:13:14 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2006-02-04 23:51:18 -0800 |
| commit | c2db292438c20c3f13db6e5563e0ce5b449bedac (patch) | |
| tree | 775c7aa2e2e6069cb238833e5328a7b42b23041a /net/netfilter | |
| parent | [NETFILTER]: nf_conntrack: check address family when finding protocol module (diff) | |
| download | linux-dev-c2db292438c20c3f13db6e5563e0ce5b449bedac.tar.xz linux-dev-c2db292438c20c3f13db6e5563e0ce5b449bedac.zip | |
[NETFILTER]: ULOG/nfnetlink_log: Use better default value for 'nlbufsiz'
Performance tests showed that ULOG may fail on heavy loaded systems
because of failed order-N allocations (N >= 1).
The default value of 4096 is not optimal in the sense that it actually
allocates _two_ contigous physical pages. Reasoning: ULOG uses
alloc_skb(), which adds another ~300 bytes for skb_shared_info.
This patch sets the default value to NLMSG_GOODSIZE and adds some
documentation at the top.
Signed-off-by: Holger Eitzenberger <heitzenberger@astaro.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter')
| -rw-r--r-- | net/netfilter/nfnetlink_log.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index e10512e229b6..50787af86d7d 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -37,7 +37,7 @@ #include "../bridge/br_private.h" #endif -#define NFULNL_NLBUFSIZ_DEFAULT 4096 +#define NFULNL_NLBUFSIZ_DEFAULT NLMSG_GOODSIZE #define NFULNL_TIMEOUT_DEFAULT 100 /* every second */ #define NFULNL_QTHRESH_DEFAULT 100 /* 100 packets */ |