gatewaywork 业务进程busy

strace -ttp pid的结果：

recvfrom(13, "$-1\r\n", 8192, MSG_DONTWAIT, NULL, NULL) = 5
18:17:30.918120 sendto(11, "\0\0\0\234\5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0>\1\0\0\0\0\0\0{\"Ty"..., 156, 0, NULL, 0) = 156
18:17:30.918198 alarm(0)                = 30
18:17:30.918279 alarm(30)               = 0
18:17:30.918358 socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 14
18:17:30.918398 fcntl(14, F_GETFL)      = 0x2 (flags O_RDWR)
18:17:30.918435 fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0
18:17:30.918470 connect(14, {sa_family=AF_INET, sin_port=htons(3904), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress)
18:17:30.918531 poll(, 1, 3000) = 0 (Timeout)
18:17:33.930025 fcntl(14, F_SETFL, O_RDWR) = 0
18:17:33.930125 close(14)               = 0
18:17:33.930220 write(1, "\nWarning: stream_socket_client()"..., 216) = 216
18:17:33.930332 sendto(11, "\0\0\0\317\5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0^\1\0\0\0\0\0\0{\"Ty"..., 207, 0, NULL, 0) = 207
18:17:33.930494 alarm(0)                = 27
18:17:33.930713 alarm(30)               = 0
18:17:33.930810 socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 14
18:17:33.930852 fcntl(14, F_GETFL)      = 0x2 (flags O_RDWR)
18:17:33.930888 fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0
18:17:33.930923 connect(14, {sa_family=AF_INET, sin_port=htons(3904), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress)
18:17:33.930983 poll(, 1, 3000) = 0 (Timeout)
18:17:36.933650 fcntl(14, F_SETFL, O_RDWR) = 0
18:17:36.933778 close(14)               = 0
18:17:36.933852 write(1, "\nWarning: stream_socket_client()"..., 216) = 216
18:17:36.933962 sendto(11, "\0\0\0\317\5\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0D\1\0\0\0\0\0\0{\"Ty"..., 207, 0, NULL, 0) = 207
18:17:36.934168 alarm(0)                = 27
18:17:36.934268 alarm(30)               = 0
18:17:36.934352 socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 14
18:17:36.934394 fcntl(14, F_GETFL)      = 0x2 (flags O_RDWR)
18:17:36.934430 fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0
18:17:36.934466 connect(14, {sa_family=AF_INET, sin_port=htons(3904), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress)
18:17:36.934529 poll(, 1, 3000^Cstrace: Process 1275 detached

lsof -nPp pid的结果：php     1275 root  mem       REG              253,1     40664  1049992 /usr/lib64/libcrypt-2.17.so
php     1275 root  mem       REG              253,1    163400  1061733 /usr/lib64/ld-2.17.so
php     1275 root  mem       REG              253,1     26254  1050290 /usr/lib64/gconv/gconv-modules.cache
php     1275 root    0u      CHR              136,3       0t0        6 /dev/pts/3
php     1275 root    1w      REG              253,1   8596562   547647 /www/wwwroot/chat/GatewayWorkerTest/GatewayWorker/logfile.log
php     1275 root    2w      REG              253,1   8596562   547647 /www/wwwroot/chat/GatewayWorkerTest/GatewayWorker/logfile.log
php     1275 root    3u  a_inode                0,9         0     4852 
php     1275 root    4u     unix 0xffff880023b3bc00       0t0 62399828 socket
php     1275 root    5u     unix 0xffff880023b3b400       0t0 62399829 socket
php     1275 root    6u     IPv4           62399830       0t0      TCP 127.0.0.1:59180->127.0.0.1:1235 (ESTABLISHED)
php     1275 root    7u     IPv4           62399906       0t0      TCP 127.0.0.1:40356->127.0.0.1:3900 (ESTABLISHED)
php     1275 root    8u     IPv4           62399907       0t0      TCP 127.0.0.1:49756->127.0.0.1:3901 (ESTABLISHED)
php     1275 root    9u     IPv4           62399908       0t0      TCP 127.0.0.1:47856->127.0.0.1:3903 (ESTABLISHED)
php     1275 root   10u     IPv4           62399909       0t0      TCP 127.0.0.1:34340->127.0.0.1:3905 (ESTABLISHED)
php     1275 root   11u     IPv4           62399972       0t0      TCP 127.0.0.1:41096->127.0.0.1:3904 (ESTABLISHED)
php     1275 root   12u     IPv4           62399973       0t0      TCP 127.0.0.1:44262->127.0.0.1:3902 (ESTABLISHED)
php     1275 root   13u     IPv4           62407679       0t0      TCP 127.0.0.1:59230->127.0.0.1:6379 (ESTABLISHED)
php     1275 root   14u     IPv4           62539471       0t0      TCP 127.0.0.1:38320->127.0.0.1:3900 (SYN_SENT)

好像是业务进程发数据给gateway进程的时候卡住了
还有就是，redis链接的时候，出现Operation now in progress，请问是什么原因呢