NetBSD web服务器性能

Question

我对Linux、FreeBSD和NetBSD之间web服务器性能的差异很感兴趣，因为我听说NetBSD和FreeBSD具有良好的TCP/IP实现。

因此，我在KVM上设置了具有相同硬件功能( CPU、RAM:2G、HDD:16G、NIC:virtio)的VM，然后分别为Nginx安装必要的软件包。

我只是在ramdisk上运行带有静态主页的简单Nginx (为了防止磁盘I/O因素)。

我发现NetBSD的性能很差。我怀疑NetBSD的基本设置是保守的，所以我尝试调优一些系统参数。但是，很少有关于NetBSD系统调优的资源。虽然与FreeBSD相比，我调优了一些sysctl参数，但仍然不是更好。

是否有任何NetBSD调优建议或NetBSD真的不是web服务器的好选择？

下面是我的apache基准测试结果：

ab -r -n 10000 -c 500

Server Software:        LINUX nginx/1.9.3
Server Hostname:        10.128.81.63
Server Port:            80

Document Path:          /
Document Length:        612 bytes

Concurrency Level:      500
Time taken for tests:   0.823 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      8440000 bytes
HTML transferred:       6120000 bytes
Requests per second:    12155.16 [#/sec] (mean)
Time per request:       41.135 [ms] (mean)
Transfer rate:          10018.51 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.5      0       4
Processing:     2   16  78.2      8     817
Waiting:        1   16  78.2      8     817
Total:          6   16  78.4      8     819
------------------------------------------------------------
Server Software:        FreeBSD nginx/1.9.3
Server Hostname:        10.128.81.67
Server Port:            80

Document Path:          /
Document Length:        612 bytes

Concurrency Level:      500
Time taken for tests:   0.443 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      8440000 bytes
HTML transferred:       6120000 bytes
Requests per second:    22577.85 [#/sec] (mean)
Time per request:       22.146 [ms] (mean)
Transfer rate:          18609.09 [Kbytes/sec] received

Connection Times (ms)
          min  mean[+/-sd] median   max
Connect:        0    0   0.5      0       3
Processing:     3   21   7.7     21     214
Waiting:        3   21   7.7     21     214
Total:          6   22   7.6     22     217

------------------------------------------------------------
Server Software:        NetBSD nginx/1.9.3
Server Hostname:        10.128.81.69
Server Port:            80

Document Path:          /
Document Length:        612 bytes

Concurrency Level:      500
Time taken for tests:   1.350 seconds
Complete requests:      10000
Failed requests:        373
   (Connect: 0, Receive: 144, Length: 85, Exceptions: 144)
Total transferred:      8318464 bytes
HTML transferred:       6031872 bytes
Requests per second:    7410.05 [#/sec] (mean)
Time per request:       67.476 [ms] (mean)
Transfer rate:          6019.56 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0   29 166.9      0    1003
Processing:     1   20  13.9     19     224
Waiting:        0   20  13.9     19     224
Total:          4   49 169.3     20    1212

Answer 1

您正在使用KVM --请注意，(AFAIK)在NetBSD下仍然很不稳定。

我认为这解释了Linux和FreeBSD (两者都支持virtio )和NetBSD之间的性能差异。