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a17f14f73a
epoll contention on TCP causes latency build-up when we have high volume ingress. This PR is an attempt to relieve this pressure. upstream issue https://github.com/golang/go/issues/65064 It seems to be a deeper problem; haven't yet tried the fix provide in this issue, but however this change without changing the compiler helps. Of course, this is a workaround for now, hoping for a more comprehensive fix from Go runtime.
108 lines
3.7 KiB
Go
108 lines
3.7 KiB
Go
// Copyright (c) 2015-2023 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"context"
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"crypto/tls"
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"sync/atomic"
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"github.com/minio/minio/internal/fips"
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"github.com/minio/minio/internal/grid"
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xhttp "github.com/minio/minio/internal/http"
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"github.com/minio/minio/internal/rest"
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)
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// globalGrid is the global grid manager.
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var globalGrid atomic.Pointer[grid.Manager]
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// globalLockGrid is the global lock grid manager.
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var globalLockGrid atomic.Pointer[grid.Manager]
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// globalGridStart is a channel that will block startup of grid connections until closed.
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var globalGridStart = make(chan struct{})
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// globalLockGridStart is a channel that will block startup of lock grid connections until closed.
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var globalLockGridStart = make(chan struct{})
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func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {
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hosts, local := eps.GridHosts()
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lookupHost := globalDNSCache.LookupHost
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g, err := grid.NewManager(ctx, grid.ManagerOptions{
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// Pass Dialer for websocket grid, make sure we do not
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// provide any DriveOPTimeout() function, as that is not
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// useful over persistent connections.
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Dialer: grid.ConnectWS(
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grid.ContextDialer(xhttp.DialContextWithLookupHost(lookupHost, xhttp.NewInternodeDialContext(rest.DefaultTimeout, globalTCPOptions.ForWebsocket()))),
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newCachedAuthToken(),
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&tls.Config{
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RootCAs: globalRootCAs,
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CipherSuites: fips.TLSCiphers(),
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CurvePreferences: fips.TLSCurveIDs(),
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}),
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Local: local,
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Hosts: hosts,
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AuthToken: validateStorageRequestToken,
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AuthFn: newCachedAuthToken(),
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BlockConnect: globalGridStart,
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// Record incoming and outgoing bytes.
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Incoming: globalConnStats.incInternodeInputBytes,
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Outgoing: globalConnStats.incInternodeOutputBytes,
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TraceTo: globalTrace,
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RoutePath: grid.RoutePath,
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})
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if err != nil {
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return err
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}
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globalGrid.Store(g)
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return nil
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}
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func initGlobalLockGrid(ctx context.Context, eps EndpointServerPools) error {
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hosts, local := eps.GridHosts()
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lookupHost := globalDNSCache.LookupHost
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g, err := grid.NewManager(ctx, grid.ManagerOptions{
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// Pass Dialer for websocket grid, make sure we do not
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// provide any DriveOPTimeout() function, as that is not
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// useful over persistent connections.
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Dialer: grid.ConnectWSWithRoutePath(
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grid.ContextDialer(xhttp.DialContextWithLookupHost(lookupHost, xhttp.NewInternodeDialContext(rest.DefaultTimeout, globalTCPOptions.ForWebsocket()))),
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newCachedAuthToken(),
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&tls.Config{
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RootCAs: globalRootCAs,
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CipherSuites: fips.TLSCiphers(),
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CurvePreferences: fips.TLSCurveIDs(),
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}, grid.RouteLockPath),
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Local: local,
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Hosts: hosts,
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AuthToken: validateStorageRequestToken,
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AuthFn: newCachedAuthToken(),
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BlockConnect: globalGridStart,
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// Record incoming and outgoing bytes.
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Incoming: globalConnStats.incInternodeInputBytes,
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Outgoing: globalConnStats.incInternodeOutputBytes,
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TraceTo: globalTrace,
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RoutePath: grid.RouteLockPath,
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})
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if err != nil {
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return err
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}
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globalLockGrid.Store(g)
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return nil
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}
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