minio/internal/kernel/kernel_utsname_uint8.go
Harshavardhana 91d419ee6c
warn issues about large block I/O performance for Linux older than 4.0.0 (#14524)
This PR simply adds a warning message when it detects older kernel
versions and warn's them about potential performance issues on this
kernel.

The issue can be seen only with parallel I/O across all drives
on denser setups such as 90 drives or 45 drives per server configurations.
2022-03-10 17:36:13 -08:00

33 lines
1.1 KiB
Go

// Copyright (c) 2015-2022 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//go:build (linux && arm) || (linux && ppc64) || (linux && ppc64le) || (linux && s390x)
// +build linux,arm linux,ppc64 linux,ppc64le linux,s390x
package kernel
func utsnameStr(in []uint8) string {
out := make([]byte, 0, len(in))
for i := 0; i < len(in); i++ {
if in[i] == 0x00 {
break
}
out = append(out, byte(in[i]))
}
return string(out)
}