Message ID | 20090727131357.9561.39720.stgit@jazzy.zrh.corp.google.com |
---|---|
State | Rejected, archived |
Delegated to: | David Miller |
Headers | show |
From: Hannes Eder <heder@google.com> Date: Mon, 27 Jul 2009 15:13:57 +0200 > No more guessing, how much memory used by IPVS for a connection. > > [ The number printed is a lower bound, as ip_vs_conn_cache uses > SLAB_HWCACHE_ALIGN. ] > > Signed-off-by: Hannes Eder <heder@google.com> > Signed-off-by: Simon Horman <horms@verge.net.au> Who needs to know this? A developer? They can run tools such as 'pahole' et al. to fish out this information even when only a kernel binary is available. For the user, it's just noise. I'm not applying this, sorry. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Jul 27, 2009 at 11:48:45AM -0700, David Miller wrote: > From: Hannes Eder <heder@google.com> > Date: Mon, 27 Jul 2009 15:13:57 +0200 > > > No more guessing, how much memory used by IPVS for a connection. > > > > [ The number printed is a lower bound, as ip_vs_conn_cache uses > > SLAB_HWCACHE_ALIGN. ] > > > > Signed-off-by: Hannes Eder <heder@google.com> > > Signed-off-by: Simon Horman <horms@verge.net.au> > > Who needs to know this? A developer? > > They can run tools such as 'pahole' et al. to fish out this > information even when only a kernel binary is available. > > For the user, it's just noise. > > I'm not applying this, sorry. Surprisingly its a very common question amongst users, because they want to know how much memory they need. It is of course all a bit silly, because the amount of memory used by the connection table is usually very small, but people still ask. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Simon Horman a écrit : > > Surprisingly its a very common question amongst users, > because they want to know how much memory they need. > It is of course all a bit silly, because the amount of > memory used by the connection table is usually very small, > but people still ask. > If SLUB is used $ cat /sys/kernel/slab/ip_vs_conn/object_size If SLAB is used, take fourth column of : $ grep ip_vs_conn /proc/slabinfo BTW these take into account L1 cache size alignment -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index b021464..b6bb4a0 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1475,7 +1475,8 @@ static int __init ip_vs_init(void) goto cleanup_conn; } - IP_VS_INFO("ipvs loaded.\n"); + IP_VS_INFO("ipvs loaded (using at least %Zd bytes/connection).\n", + sizeof(struct ip_vs_conn)); return ret; cleanup_conn: