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Each Put, List, Multipart operations heavily rely on making GetBucketInfo() call to verify if bucket exists or not on a regular basis. This has a large performance cost when there are tons of servers involved. We did optimize this part by vectorizing the bucket calls, however its not enough, beyond 100 nodes and this becomes fairly visible in terms of performance.
85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
// Copyright (c) 2015-2021 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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"io"
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"testing"
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)
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func testBitrotReaderWriterAlgo(t *testing.T, bitrotAlgo BitrotAlgorithm) {
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tmpDir := t.TempDir()
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volume := "testvol"
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filePath := "testfile"
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disk, err := newLocalXLStorage(tmpDir)
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if err != nil {
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t.Fatal(err)
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}
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disk.MakeVol(context.Background(), volume)
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writer := newBitrotWriter(disk, "", volume, filePath, 35, bitrotAlgo, 10)
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_, err = writer.Write([]byte("aaaaaaaaaa"))
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if err != nil {
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t.Fatal(err)
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}
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_, err = writer.Write([]byte("aaaaaaaaaa"))
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if err != nil {
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t.Fatal(err)
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}
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_, err = writer.Write([]byte("aaaaaaaaaa"))
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if err != nil {
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t.Fatal(err)
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}
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_, err = writer.Write([]byte("aaaaa"))
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if err != nil {
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t.Fatal(err)
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}
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if bw, ok := writer.(io.Closer); ok {
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bw.Close()
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}
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reader := newBitrotReader(disk, nil, volume, filePath, 35, bitrotAlgo, bitrotWriterSum(writer), 10)
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b := make([]byte, 10)
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if _, err = reader.ReadAt(b, 0); err != nil {
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t.Fatal(err)
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}
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if _, err = reader.ReadAt(b, 10); err != nil {
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t.Fatal(err)
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}
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if _, err = reader.ReadAt(b, 20); err != nil {
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t.Fatal(err)
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}
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if _, err = reader.ReadAt(b[:5], 30); err != nil {
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t.Fatal(err)
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}
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if br, ok := reader.(io.Closer); ok {
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br.Close()
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}
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}
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func TestAllBitrotAlgorithms(t *testing.T) {
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for bitrotAlgo := range bitrotAlgorithms {
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testBitrotReaderWriterAlgo(t, bitrotAlgo)
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}
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}
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