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disable disk-usage when export is root mount path (#6091)

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disk usage crawling is not needed when a tenant
is not sharing the same disk for multiple other
tenants. This PR adds an optimization when we
see a setup uses entire disk, we simply rely on
statvfs() to give us total usage.

This PR also additionally adds low priority
scheduling for usage check routine, such that
other go-routines blocked will be automatically
unblocked and prioritized before usage.
This commit is contained in:
Harshavardhana
2018-06-27 18:59:38 -07:00
committed by Dee Koder
parent abf209b1dd
commit 25de775560
6 changed files with 168 additions and 17 deletions
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7
cmd/http/server.go
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@@ -59,7 +59,12 @@ type Server struct {
listenerMutex *sync.Mutex // to guard 'listener' field.
listener *httpListener // HTTP listener for all 'Addrs' field.
inShutdown uint32 // indicates whether the server is in shutdown or not
requestCount int32 // counter holds no. of request in process.
requestCount int32 // counter holds no. of request in progress.
}
// GetRequestCount - returns number of request in progress.
func (srv *Server) GetRequestCount() int32 {
return atomic.LoadInt32(&srv.requestCount)
}
// Start - start HTTP server