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| author | Dust Li <dust.li@linux.alibaba.com> | 2021-08-20 13:37:52 +0800 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-10-07 19:52:58 +0200 |
| commit | 2232642ec3fb4aad6ae4da1e109f55a0e7f2d204 (patch) | |
| tree | 23d4ce8562232628c0f5b385d1c20515890d9f3d /include/net/ip_vs.h | |
| parent | c514fbb6231483b05c97eb22587188d4c453b28e (diff) | |
| download | lwn-2232642ec3fb4aad6ae4da1e109f55a0e7f2d204.tar.gz lwn-2232642ec3fb4aad6ae4da1e109f55a0e7f2d204.zip | |
ipvs: add sysctl_run_estimation to support disable estimation
estimation_timer will iterate the est_list to do estimation
for each ipvs stats. When there are lots of services, the
list can be very large.
We found that estimation_timer() run for more then 200ms on a
machine with 104 CPU and 50K services.
yunhong-cgl jiang report the same phenomenon before:
https://www.spinics.net/lists/lvs-devel/msg05426.html
In some cases(for example a large K8S cluster with many ipvs services),
ipvs estimation may not be needed. So adding a sysctl blob to allow
users to disable this completely.
Default is: 1 (enable)
Cc: yunhong-cgl jiang <xintian1976@gmail.com>
Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net/ip_vs.h')
| -rw-r--r-- | include/net/ip_vs.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 7cb5a1aace40..ff1804a0c469 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -931,6 +931,7 @@ struct netns_ipvs { int sysctl_conn_reuse_mode; int sysctl_schedule_icmp; int sysctl_ignore_tunneled; + int sysctl_run_estimation; /* ip_vs_lblc */ int sysctl_lblc_expiration; @@ -1071,6 +1072,11 @@ static inline int sysctl_cache_bypass(struct netns_ipvs *ipvs) return ipvs->sysctl_cache_bypass; } +static inline int sysctl_run_estimation(struct netns_ipvs *ipvs) +{ + return ipvs->sysctl_run_estimation; +} + #else static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) @@ -1163,6 +1169,11 @@ static inline int sysctl_cache_bypass(struct netns_ipvs *ipvs) return 0; } +static inline int sysctl_run_estimation(struct netns_ipvs *ipvs) +{ + return 1; +} + #endif /* IPVS core functions |