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Diffstat (limited to 'Documentation/networking/ipvs-sysctl.txt')
| -rw-r--r-- | Documentation/networking/ipvs-sysctl.txt | 40 |
1 files changed, 31 insertions, 9 deletions
diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt index e6b1c025fdd8..7acaaa65451e 100644 --- a/Documentation/networking/ipvs-sysctl.txt +++ b/Documentation/networking/ipvs-sysctl.txt @@ -185,15 +185,37 @@ secure_tcp - INTEGER The value definition is the same as that of drop_entry and drop_packet. -sync_threshold - INTEGER - default 3 - - It sets synchronization threshold, which is the minimum number - of incoming packets that a connection needs to receive before - the connection will be synchronized. A connection will be - synchronized, every time the number of its incoming packets - modulus 50 equals the threshold. The range of the threshold is - from 0 to 49. +sync_threshold - vector of 2 INTEGERs: sync_threshold, sync_period + default 3 50 + + It sets synchronization threshold, which is the minimum number + of incoming packets that a connection needs to receive before + the connection will be synchronized. A connection will be + synchronized, every time the number of its incoming packets + modulus sync_period equals the threshold. The range of the + threshold is from 0 to sync_period. + + When sync_period and sync_refresh_period are 0, send sync only + for state changes or only once when pkts matches sync_threshold + +sync_refresh_period - UNSIGNED INTEGER + default 0 + + In seconds, difference in reported connection timer that triggers + new sync message. It can be used to avoid sync messages for the + specified period (or half of the connection timeout if it is lower) + if connection state is not changed since last sync. + + This is useful for normal connections with high traffic to reduce + sync rate. Additionally, retry sync_retries times with period of + sync_refresh_period/8. + +sync_retries - INTEGER + default 0 + + Defines sync retries with period of sync_refresh_period/8. Useful + to protect against loss of sync messages. The range of the + sync_retries is from 0 to 3. snat_reroute - BOOLEAN 0 - disabled |