create tables, create indexes, reset sequences,workers=8, concurrency=4,multiple readers per thread, rows per range=50000,prefetchrows=50000,batch rows=50000, batch concurrency=1, batch size=4GBSET MySQL PARAMETERSnet_read_timeout='14400',net_write_timeout='14400...
@@net_buffer_length AS net_buffer_length, @@net_write_timeout AS net_write_timeout, @@query_cache_size AS query_cache_size, @@query_cache_type AS query_cache_type, @@sql_mode AS sql_mode, @@system_time_zone AS system_time_zone, @@time_zone AS time_zone, @@tx_isolation AS tx...
// time limit; see SetDeadline and SetWriteDeadline. Write(b []byte) (n int, err error) // Close closes the connection. // Any blocked Read or Write operations will be unblocked and return errors. Close() error // LocalAddr returns the local network address. LocalAddr() Addr // R...
port = 3369 socket = /tmp/mysql.sock skip-locking max_allowed_packet = 2M sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size =16M wait_timeout=1400 interactive_timeout=1400 1. 2. 3. 4. 5. 6. 7. 8. ...
1 yum -y install epel-release git curl sshpass atop vim htop net-tools 2 yum -y install python-pip 1. 2. 在中控机上创建 tidb 用户,并生成 ssh key 1 # 创建tidb用户 2 useradd -m -d /home/tidb tidb && passwd tidb 3 # 配置tidb用户sudo权限 4 visudo 5 tidb ALL=(ALL) NOPASSWD: ...
write-buffer-size = "128MB" max-write-buffer-number = 5 min-write-buffer-number-to-merge = 1 max-bytes-for-level-base = "512MB" target-file-size-base = "32MB" [raftdb] max-open-files = 409600 compaction-readahead-size = "20MB" ...
SynchronousWriteOptions.LockTimeout = 60000;// 同步写入锁等待超时时间(单位:毫秒),默认值:5000 options.SynchronousWriteOptions.OnLockTakenFailed = lockTimeout => { Console.WriteLine($"###获取同步写入锁失败({lockTimeout}ms)"); return true;// 返回true:继续执行(仍然可能会发生锁库问题)。返回false...
TiDB 是 PingCAP 公司设计的开源分布式 HTAP (Hybrid Transactional and Analytical Processing) 数据库,结合了传统的 RDBMS 和 NoSQL 的最佳特性。TiDB 兼容 MySQL,支持无限的水平扩展,具备强一致性和高可用性。TiDB 的目标是为 OL...
echo "net.ipv4.ip_nonlocal_bind = 1" >>/etc/sysctl.conf echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf sysctl -p 2、解决Keepalived脚本启动时warning、Unsafe 3、配置Haproxy透传参数send-proxy后,tidb日志一直报write: connection reset by peer 见: 感谢裤衩儿飞上天的指点。
我们使用perf-tools中的funcslowertrace 来执行较慢的内核函数并调整内核参数hung_task_timeout_secs阈值,抓取到了一些 TiKV 执行写操作时的内核路径信息: 从上图的信息中可以看到 I/O 抖动和文件系统执行 writepage 有关。同时捕获到性能抖动的前后,在 node 内存资源充足的情况下,dmesg返回的结果也会出现大量 “...