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Rename clientRPCCache to clientRPCConnMaxIdle, change value 

Increase the max idle time for agents talking to servers from 30s to 127s in order to allow for the reuse of connections that are being initiated by cron.

127s was chosen as the first prime above 120s (arbitrarily chose to use a prime) with the intent of reusing connections who are used by once-a-minute cron(8) jobs *and* who use a 60s jitter window (e.g. in vixie cron job execution can drift by up to 59s per job, or 119s for a once-a-minute cron job).
This commit is contained in:
Sean Chittenden 2016-01-30 15:27:46 -08:00
parent e83a5b7a70
commit b216d4c11f
1 changed files with 8 additions and 4 deletions
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12
consul/client.go
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@ -17,9 +17,13 @@ import (
)
const (
// clientRPCCache controls how long we keep an idle connection
// open to a server
clientRPCCache = 30 * time.Second
// clientRPCConnMaxIdle controls how long we keep an idle connection
// open to a server. 127s was chosen as the first prime above 120s
// (arbitrarily chose to use a prime) with the intent of reusing
// connections who are used by once-a-minute cron(8) jobs *and* who
// use a 60s jitter window (e.g. in vixie cron job execution can
// drift by up to 59s per job, or 119s for a once-a-minute cron job).
clientRPCConnMaxIdle = 127 * time.Second
// clientMaxStreams controls how many idle streams we keep
// open to a server
@ -103,7 +107,7 @@ func NewClient(config *Config) (*Client, error) {
// Create server
c := &Client{
config: config,
connPool: NewPool(config.LogOutput, clientRPCCache, clientMaxStreams, tlsWrap),
connPool: NewPool(config.LogOutput, clientRPCConnMaxIdle, clientMaxStreams, tlsWrap),
eventCh: make(chan serf.Event, 256),
logger: logger,
shutdownCh: make(chan struct{}),