1. 负载均衡的情景包括 tick balance、nohz idle balance 和 new idle balance，最终都会汇聚到 load_balance 函数来完成具体的负载均衡⼯作。⼆、load_balance 相关数据结构 1. struct lb_env 在负载均衡的时候，通过 lb_env 结构来表⽰本次负载均衡的上下⽂：//fair.c struct lb_env { //要进⾏...
no_move:if(!ld_moved) {//经过几轮的努力尝试,最终迁移的进程数ld_moved还是0,说明balance失败/** Increment the failure counter only on periodic balance. //仅在周期性balance时,累计失败次数。 * We do not want newidle balance, which can be very //我们不想统计newidle balance,它会非常频繁,破...
(1-3)开启active_load_balance work的工作队列 /** * stop_one_cpu_nowait - stop a cpu but don't wait for completion * @cpu: cpu to stop * @fn: function to execute * @arg: argument to @fn * @work_buf: pointer to cpu_stop_work structure * * Similar to stop_one_cpu() but do...
You learn the different load balancer options in Azure and how to choose and implement the right Azure solution for non-HTTP(S) traffic.Learning objectives At the end of this module, you are able to: Identify the features and capabilities of Azure Load Balancer Design and implement an Azure ...
com.weibo.api.motan.exception.MotanServiceException: error_message: ActiveWeightLoadBalance No available referers for call : referers_size= 0 requestId=1628056900938498051 interface=com.jason.start.service.UserService method=save(com.jason.start.service.entity.model.User), status: 503, error_code: ...
在进行客户端调用服务端的服务时出现异常信息: error_message: ActiveWeightLoadBalance No available referers for call : referers_size= 0 requestId=1565616615508148227 interface=com.xinhuanet.sc.land.service.foundaion.service.bas.DeviceService method=insert(com.xinhuanet.sc.land.service.foundation.domain.jpa...
log.warn("No up servers available from load balancer: " + lb); return null; } int nextServerIndex = incrementAndGetModulo(serverCount); // incrementAndGetModulo方法内部使用nextServerCyclicCounter这个AtomicInteger属性原子递增对serverCount取模得到索引值 ...
oracle@SZDB:~> grep ora10g2 no_load_bal_new.log |wc -l 100 由于实例ora10g1已经关闭,因此所有的连接请求都被分配到ora10g2。 四、总结 1、客户端的负载均衡配置较为简单,仅仅是在客户端的tnsnames.ora添加 LOAD_BALANCE = yes |on 2、其连接分配原则是根据tnsnames.ora中连接标识符下的ADDRESS列表随机...
#ifdef CONFIG_NO_HZ //如果我们进入 tick 的时候有事可做,那么就不再作为 ilb 了,ilb 只有 idle 可以 if (rq->in_nohz_recently && !rq->idle_at_tick) { rq->in_nohz_recently = 0; if (atomic_read(&nohz.load_balancer) == cpu) { cpu_clear(cpu, nohz.cpu_mask); atomic_set(&nohz.l...
It is an essentialponent of fault-tolerant systems as it ensures that no single point of failure exists. The Importance of Load Balancing The importance of load balancing can be summed up in three main points: 1. Improved Performance: By distributing the workload evenly across multiple servers,...