服务器出现broken pipe ，connection reset解决方法

linux下webloigc经常出现broken pipe，socket....connection reset错误.
　　有有可能是linux的线程机制会产生JVM出错的问题，特别是在连接高峰期间经常出现这样的问题，tomcat在linux下也出现类似情况。
　　解决办法是在环境变量中设置： _JAVA_SR_SIGNUM = 12 基本就可以解决。
　　sun的解释：
　　－－posted by: cooper
　　Below is a clipping from Sun on working around JVM crashes under high
　　thread counts in the JVM 1.3 for Linux
　　On Linux, use a larger signal number for hotspot thread
　　suspension/resumption handler. The signal number being used is
　　specified by environment variable _JAVA_SR_SIGNUM. Setting it to a
　　number larger than SIGSEGV (11) will solve the problem. A good number
　　to use is 12, which is SIGUSR2. Using signal 16 to work around the
　　problem might have potential problems. So on tcsh, "setenv
　　_JAVA_SR_SIGNUM 12" can solve the problem.
　　上次有一同志问在连接数据库的时候也出现过connection reset错误，这有可能是连接没有正常释放（不一定是程序的问题），最好在连接迟中设置无效连接超时的最大值。