From: Eric Dumazet <eric.dumazet@gmail.com>
To: Simon Horman <horms@verge.net.au>
Cc: netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
netfilter@vger.kernel.org, lvs-devel@vger.kernel.org,
Julian Anastasov <ja@ssi.bg>,
Hans Schillstrom <hans@schillstrom.com>
Subject: Re: [PATCH 02/20] ipvs: reorganize tot_stats
Date: Mon, 14 Mar 2011 05:28:23 +0100 [thread overview]
Message-ID: <1300076903.2761.64.camel@edumazet-laptop> (raw)
In-Reply-To: <1300074346-13799-3-git-send-email-horms@verge.net.au>
Le lundi 14 mars 2011 à 12:45 +0900, Simon Horman a écrit :
> From: Julian Anastasov <ja@ssi.bg>
>
> The global tot_stats contains cpustats field just like the
> stats for dest and svc, so better use it to simplify the usage
> in estimation_timer. As tot_stats is registered as estimator
> we can remove the special ip_vs_read_cpu_stats call for
> tot_stats. Fix ip_vs_read_cpu_stats to be called under
> stats lock because it is still used as synchronization between
> estimation timer and user context (the stats readers).
>
> Also, make sure ip_vs_stats_percpu_show reads properly
> the u64 stats from user context.
>
> Signed-off-by: Julian Anastasov <ja@ssi.bg>
> Signed-off-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
One comment : per cpu stats are really good to avoid cache misses, but I
see tot_stats is included in struct netns_ipvs right after "conn_count",
possibly sharing a hot cache line ?
Thanks
next prev parent reply other threads:[~2011-03-14 4:28 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-14 3:45 [patch v3 00/20] IPVS: Proposed Changes Simon Horman
2011-03-14 3:45 ` [PATCH 01/20] ipvs: move struct netns_ipvs Simon Horman
2011-03-14 3:45 ` [PATCH 02/20] ipvs: reorganize tot_stats Simon Horman
2011-03-14 4:28 ` Eric Dumazet [this message]
2011-03-14 9:21 ` Julian Anastasov
2011-03-14 3:45 ` [PATCH 03/20] ipvs: properly zero stats and rates Simon Horman
2011-03-14 4:09 ` Eric Dumazet
2011-03-14 3:45 ` [PATCH 04/20] ipvs: remove unused seqcount stats Simon Horman
2011-03-14 3:45 ` [PATCH 05/20] ipvs: optimize rates reading Simon Horman
2011-03-14 3:45 ` [PATCH 06/20] ipvs: rename estimator functions Simon Horman
2011-03-14 3:45 ` [PATCH 07/20] IPVS: Add ip_vs_route_me_harder() Simon Horman
2011-03-14 3:45 ` [PATCH 08/20] IPVS: Add sysctl_snat_reroute() Simon Horman
2011-03-14 3:45 ` [PATCH 09/20] IPVS: Add sysctl_nat_icmp_send() Simon Horman
2011-03-14 3:45 ` [PATCH 10/20] IPVS: Add {sysctl_sync_threshold,period}() Simon Horman
2011-03-14 3:45 ` [PATCH 11/20] IPVS: Add sysctl_sync_ver() Simon Horman
2011-03-14 3:45 ` [PATCH 12/20] IPVS: Add sysctl_expire_nodest_conn() Simon Horman
2011-03-14 3:45 ` [PATCH 13/20] IPVS: Add expire_quiescent_template() Simon Horman
2011-03-14 3:45 ` [PATCH 14/20] IPVS: Conditinally use sysctl_lblc{r}_expiration Simon Horman
2011-03-14 3:45 ` [PATCH 15/20] IPVS: ip_vs_todrop() becomes a noop when CONFIG_SYSCTL is undefined Simon Horman
2011-03-14 3:45 ` [PATCH 16/20] IPVS: Conditional ip_vs_conntrack_enabled() Simon Horman
2011-03-14 3:45 ` [PATCH 17/20] IPVS: Minimise ip_vs_leave when CONFIG_SYSCTL is undefined Simon Horman
2011-03-14 3:45 ` [PATCH 18/20] IPVS: Conditionally define and use ip_vs_lblc{r}_table Simon Horman
2011-03-14 3:45 ` [PATCH 19/20] IPVS: Add __ip_vs_control_{init,cleanup}_sysctl() Simon Horman
2011-03-14 3:45 ` [PATCH 20/20] IPVS: Conditionally include sysctl members of struct netns_ipvs Simon Horman
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