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我在運行Ubuntu的Homestead vagrant框上執行PHP命令時一直掛起。在控制檯甚至開始執行php cli之前，有一個很大的滯後。所有流浪的PHP CLI腳本在Mac OS X上等待主機分辨率掛起
ran strace -vyT -S time php artisan help from vagrant box。一切都被卡住了幾分鐘就第一個到最後打電話recvfrom(3，但我不知道爲什麼：
open("/etc/resolv.conf", O_RDONLY|O_CLOEXEC) = 3 <0.000010>
fstat(3</run/resolvconf/resolv.conf>, {st_dev=makedev(0, 16), st_ino=7632, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=8, st_size=171, st_atime=2015/10/17-04:53:56, st_mtime=2015/10/17-04:53:54, st_ctime=2015/10/17-04:53:54}) = 0 <0.000007>
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fed9385c000 <0.000008>
read(3</run/resolvconf/resolv.conf>, "# Dynamic resolv.conf(5) file fo"..., 4096) = 171 <0.000010>
read(3</run/resolvconf/resolv.conf>, "", 4096) = 0 <0.000006>
close(3</run/resolvconf/resolv.conf>) = 0 <0.000008>
munmap(0x7fed9385c000, 4096) = 0 <0.000011>
uname({sysname="Linux", nodename="homestead", release="3.13.0-65-generic", version="#106-Ubuntu SMP Fri Oct 2 22:08:27 UTC 2015", machine="x86_64", domainname="(none)"}) = 0 <0.000006>
stat("/etc/resolv.conf", {st_dev=makedev(0, 16), st_ino=7632, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=8, st_size=171, st_atime=2015/10/17-04:53:56, st_mtime=2015/10/17-04:53:54, st_ctime=2015/10/17-04:53:54}) = 0 <0.000008>
open("/etc/hosts", O_RDONLY|O_CLOEXEC) = 3 <0.000009>
fstat(3</etc/hosts>, {st_dev=makedev(8, 1), st_ino=1161, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=8, st_size=251, st_atime=2015/10/16-18:57:29, st_mtime=2014/10/03-01:16:42, st_ctime=2014/10/03-01:16:42}) = 0 <0.000005>
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fed9385c000 <0.000008>
read(3</etc/hosts>, "127.0.0.1 localhost\n\n# The follo"..., 4096) = 251 <0.000009>
read(3</etc/hosts>, "", 4096) = 0 <0.000007>
close(3</etc/hosts>) = 0 <0.000007>
munmap(0x7fed9385c000, 4096) = 0 <0.000010>
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3 <0.000012>
fcntl(3<socket:[78362]>, F_SETFL, O_RDONLY|O_NONBLOCK) = 0 <0.000006>
connect(3, {sa_family=AF_INET, sin_port=htons(9000), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress) <0.000094>
select(4, [3<socket:[78362]>], [3<socket:[78362]>], [3<socket:[78362]>], {0, 200000}) = 1 (out [3], left {0, 199997}) <0.000010>
getpeername(3, {sa_family=AF_INET, sin_port=htons(9000), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 <0.000007>
fcntl(3<socket:[78362]>, F_SETFL, O_RDONLY) = 0 <0.000006>
setsockopt(3, SOL_TCP, TCP_NODELAY, "\1\0\0\0\0\0\0\0", 8) = 0 <0.000008>
write(3<socket:[78362]>, "478\0<?xml version=\"1.0\" encoding"..., 483) = 483 <0.000042>
brk(0x2f93000) = 0x2f93000 <0.000472>
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <4.940291>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.072574>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.033758>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.038904>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.026003>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.024057>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.055221>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.058240>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.027569>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.056877>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.025934>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.076699>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.089092>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.254680>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.131634>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.065721>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.042778>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.072277>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.044424>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set) <0.080704>
--- SIGWINCH {si_signo=SIGWINCH, si_code=SI_KERNEL} ---
recvfrom(3, 0x7ffc489b16d0, 128, 0, 0, 0) = -1 ECONNRESET (Connection reset by peer) <113.777721>
這裏是/etc/hosts內容：
127.0.0.1 localhost
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
127.0.1.1 homestead homestead
的/etc/resolve.conf內容：
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 10.0.2.3
問題現在正在影響每個無關的流浪漢箱子，而不僅僅是宅基地箱子。每個CLI執行時，每個框上的幾乎每個PHP命令都會停頓5-15分鐘。如果必須調用一系列命令，則完成需要30秒的過程可能需要一個小時。
這是在Mac上運行這些盒子後開始升級到El Capitan。
根據流浪者中，有時這strace的行：
connect(3, {sa_family=AF_INET, sin_port=htons(9000), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
被替換爲：
connect(3, {sa_family=AF_INET, sin_port=htons(9000), sin_addr=inet_addr("192.168.56.1")}, 16) = 0
的IP 192.168.56.1似乎是VirtualBox的默認路由器。
請注意，所有的流浪者箱子都是標準配置或那些在我的其他團隊成員的Mac/Windows系統上沒有問題的工作。
Vagrant 1.7.4和VirtualBox 4.3.30。
在響應請求route -n：
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.0.2.2 0.0.0.0 UG 0 0 0 eth0
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
結果sudo netstat -tulnp | grep 9000：
tcp6 0 0 :::9000 :::* LISTEN 1317/hhvm
爲什麼HHVM被顯示出來，我不知道，因爲盒子是應該使用標準PHP解釋器。
這是Xdebug與HHVM的端口9000衝突。已經使用Xdebug 2.3.2。需要'xdebug.remote_autostart = on'，因爲我經常使用PHPStorm的xdebug連接進行調試，所以我試着將Xdebug端口更改爲9001以消除與HHVM的端口衝突。這解決了這個問題。不知道爲什麼這突然開始成爲一個問題，當它不是以前，但很高興它解決了！ – eComEvo
即使在更改端口之後，也會隨機開始發生，但是如果完全禁用xdebug，則會掛起50分鐘。嘗試完全刪除HHVM，然後升級到'xdebug-2.4.0rc3'並完成了一次完整的系統重啓。還在懸掛。最終發現禁用'xdebug.remote_autostart = 1'完全解決了這個問題。 – eComEvo