在我的VPS服务器上的php文件中考虑此代码:
<?php $url = 'http://www.google.com';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1" );
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$content = curl_exec($ch);
$ci = curl_getinfo($ch);
curl_close($ch);
var_dump($ci); ?>
返回此
array(22) {
["url"]=> string(21) "http://www.google.com"
["content_type"]=> string(24) "text/html; charset=UTF-8"
["http_code"]=> int(200)
["header_size"]=> int(2055)
["request_size"]=> int(147)
["filetime"]=> int(-1)
["ssl_verify_result"]=> int(0)
["redirect_count"]=> int(0)
["total_time"]=> float(50.095466)
["namelookup_time"]=> float(0.001114)
["connect_time"]=> float(50.019724)
["pretransfer_time"]=> float(50.019825)
["size_upload"]=> float(0)
["size_download"]=> float(23156)
["speed_download"]=> float(462)
["speed_upload"]=> float(0)
["download_content_length"]=> float(-1)
["upload_content_length"]=> float(0)
["starttransfer_time"]=> float(50.070702)
["redirect_time"]=> float(0)
["certinfo"]=> array(0) { }
["redirect_url"]=> string(0)
"" }
在一天中的几次测试之后,&#34; connect_time&#34;始终处于50秒大关。我相信如果不是在1秒及以下,它应该快10倍。
我对服务器配置知之甚少,但有人告诉我,我的服务器的CPU或RAM可能有问题。我使用top命令行显示以下内容对我来说似乎很好:
任务:总共80次,1次跑步,79次睡眠,0次停止,0次僵尸
Cpu(s):0.0%us,0.0%sy,0.0%ni,100.0%id,0.0%wa,0.0%hi,0.0%si, 0.0%ST
回忆:共计2097152k,使用1273128k,免费824024k,0k 缓冲器
交换:总共0k,使用0k,0k自由,0k 缓存
我想知道这个问题的根源是什么?
编辑:附加信息
ping www.google.com结果。好像它可以继续进行,所以我在第195行之后停止了命令
PING www.l.google.com(74.125.224.178)56(84)字节数据。
来自lax02s01-in-f18.1e100.net(74.125.224.178)的64字节:icmp_seq = 1 ttl = 56时间= 12.0毫秒
来自lax02s01-in-f18.1e100.net(74.125.224.178)的64字节:icmp_seq = 2 ttl = 56时间= 12.1毫秒
来自lax02s01-in-f18.1e100.net(74.125.224.178)的64字节:icmp_seq = 3 ttl = 56时间= 11.9毫秒
...
来自lax02s01-in-f18.1e100.net(74.125.224.178)的64字节:icmp_seq = 194 ttl = 56时间= 11.9毫秒
来自lax02s01-in-f18.1e100.net(74.125.224.178)的64字节:icmp_seq = 195 ttl = 56时间= 11.9毫秒
--- www.l.google.com ping统计信息---传输195个数据包,收到194个数据包,丢失0%,时间194711ms
traceroute wwww.google.com结果
traceroute到www.google.com(74.125.224.180),最多30个跃点,60个字节 包
1 ip- - - * - .ip.secureserver.net(。*。。)0.585 ms 0.642 ms 0.778 ms
2 be10.trmd0215-01.ars.mgmt.phx3.gdg(208.109.112.126)0.599 ms 0.777 ms 0.893 ms
3 ip-97-74-253-122.ip.secureserver.net(97.74.253.122)11.840 ms 12.119 ms 12.275 ms
4 ip-97-74-253-122.ip.secureserver.net(97.74.253.122)12.389 ms 12.482 ms 12.600 ms
5 PR01.LAX03.google.com(206.223.123.21)11.739 ms 11.709 ms 11.707毫秒
6 209.85.248.185(209.85.248.185)11.986 ms 11.797 ms 11.781 ms
7 72.14.236.11(72.14.236.11)12.606 ms 12.363 ms 12.328 ms
8 lax02s01-in-f20.1e100.net(74.125.224.180)11.774 ms 11.864 ms 11.842 ms
答案 0 :(得分:18)
尝试:
curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 );
以上内容将阻止cURL首先尝试IPv6。
答案 1 :(得分:0)
我刚刚运行了您提供的相同配置并获得了以下内容:
array
'url' => string 'http://www.google.com' (length=21)
'content_type' => string 'text/html; charset=UTF-8' (length=24)
'http_code' => int 200
'header_size' => int 2079
'request_size' => int 151
'filetime' => int -1
'ssl_verify_result' => int 0
'redirect_count' => int 0
'total_time' => float 0.281
'namelookup_time' => float 0
'connect_time' => float 0
'pretransfer_time' => float 0
'size_upload' => float 0
'size_download' => float 23168
'speed_download' => float 82448
'speed_upload' => float 0
'download_content_length' => float -1
'upload_content_length' => float 0
'starttransfer_time' => float 0.187
'redirect_time' => float 0
'certinfo' =>
array
empty
'redirect_url' => string '' (length=0)
我的猜测是你的服务器连接本身可能存在带宽问题和/或被另一个进程以某种方式征税。