嵌入式linux， sched: RT throttling activated问题求助大神

各位大神：
我最近升级嵌入式linux程序，结果出现这个错误： sched: RT throttling activated。出现的时机，就是我socket程序，select时收到数据时。我的Recv程序片段如下：
while(1)
{
FD_ZERO(&sfFds);
FD_SET(dwSckHandler,&sfFds);

stTmrOut.tv_sec = 5;
stTmrOut.tv_usec = 0;

if(select(dwSckHandler + 1,&sfFds,NULL,NULL,&stTmrOut) > 0)
{
dwRdLen = recv(dwSckHandler,ucRxBuf,(sizeof(ucRxBuf) - 1),0);

if(dwRdLen > 0)
{
uint8_t ucFrm[1024];
int32_t dwFrmLen = 0;

queue_push(sg_piTgNetRxQue,ucRxBuf,dwRdLen);

while((dwFrmLen = queue_has_tg_frame(sg_piTgNetRxQue)) > 0)
{
if(dwFrmLen < 1024)
{
queue_pop(sg_piTgNetRxQue,ucFrm,dwFrmLen);

LOGNOTICE("Parser 1 frame.Len:%d",dwFrmLen);
hdzlog_debug(ucFrm,dwFrmLen);

//Handle TG Rx Queue
tg_handle_rx(ucFrm,dwFrmLen);

}
else //Max frame len should be less than SCK_MAX_FRM_LEN,Queue Maybe err,
{
LOGERROR("Socket Rx Queue Err,flush rx queue.\n");
queue_flush(sg_piTgNetRxQue);
}
}
}
else
{
LOGNOTICE("SckDown.Errno:%d\n",errno);
if((dwRdLen < 0) && (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)) //Recv INTR
{
continue; //Continue Recv
}
else
{
LOGNOTICE("Recv Data Fail.Maybe Socket Down.\n");
br_tg_sckdown(pthread_self()); //Notify BusREq Tsk that this NET Recv Sck is down
while(1) //This sck is down, wait until BR-Tsk delete this tsk
{
pthread_testcancel();
}
}
}
}
else //No data comes,so output system state
{
char ucIP[PEER_IP_LENGTH] = {0};

if(getpeer_inf(dwSckHandler,ucIP) == 0)
{
LOGNOTICE("DevIP:%s is connected.",ucIP);
}
}

}
}
这个是一个pthread线程函数，专门负责接收Socket数据。每当收到数据，执行select(dwSckHandler + 1,&sfFds,NULL,NULL,&stTmrOut) 时，收到数据时，系统就会抛出sched: RT throttling activated，此时top查看CPU占用率，达到98%以上。想问一下，为啥执行select，会导致系统出现这个异常呢？那个socet句柄，是个正确的值啊。我accept连接后，socket句柄是8，Select时，句柄也是8啊，没错啊？为啥执行select会导致出现这个问题呢？有知道的大侠帮忙解答一下吧，多谢。