这两天做测试,发现在高并发情况下,semop()操作经常会返回eagain(Resource temporarily unavailable)。 相关的手册对此的解释是: [RedHat Linux] eagain An operation could not proceed immediately and either IPC_NOWAIT was asserted in its sem_flg or the time limit specified in time-out expired. [UnixWare] The operation would result in suspension of the calling process but (sem_flg&IPC_NOWAIT) is true. ...
一个进程,当它不是精灵进程时,和主程序通讯正常,变为精灵进程后,给主程序发送一个包,主程序可正常接收,主程序给该精灵进程返回应答包时,精灵进程recv()时总出现eagain,怎么回事呢?
我在HP-UX和Solaris下都碰到了这个问题: 并发用stat取文件属性时,会返回eagain错误。 大家碰到过吗,有没有不返回这个错误的类似stat的函数?
程序每隔1妙向一个字符设备write一次数据,刚开始正确,过2-3个小时就报eagain错误,请问那位知道可能是什么原因造成的,帮分析下,谢谢:luya: :luya:
子进程执行一个telnet命令 管道是绑定到标准输出上 父进程从标准输出上读取 int l=read(m_cmdOutFd[0],buffer+len,1); 我用手工打入telnet命令,输出入下 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. SunOS 5.8 login: 但是读了70多个字符后,也就是Escape character is '^]'.之后再读就出现errno==eagain了。 剩下的字符怎么读不到呢?管道有什么影响,不是后面还有些输出,应该不会阻塞的吧?...
数据库大概20G,系统加数据时报的错,时间很短。 08:27:09 Checkpoint Completed: duration was 4 seconds. 08:27:09 Checkpoint loguniq 2128, logpos 0x2b30054 08:32:11 Checkpoint Completed: duration was 3 seconds. 08:32:11 Checkpoint loguniq 2128, logpos 0x2b5d35c 08:37:15 Checkpoint Completed: duration was 3 seconds. 08:37:15 Checkpoint loguniq 2128, logpos 0x2b77018 08:38:47 *** _aiowrite...