HEAD, 30 nodes, front page.
Server Software:        Apache/2.2.8
Server Hostname:        d7.7
Server Port:            80

Document Path:          /node/
Document Length:        47529 bytes

Concurrency Level:      1
Time taken for tests:   129.812336 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Total transferred:      24057500 bytes
HTML transferred:       23764500 bytes
Requests per second:    3.85 [#/sec] (mean)
Time per request:       259.625 [ms] (mean)
Time per request:       259.625 [ms] (mean, across all concurrent requests)
Transfer rate:          180.98 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       0
Processing:   241  259  16.5    254     337
Waiting:      236  253  16.3    249     332
Total:        241  259  16.5    254     337

Percentage of the requests served within a certain time (ms)
  50%    254
  66%    260
  75%    265
  80%    270
  90%    281
  95%    293
  98%    311
  99%    327
 100%    337 (longest request)

node_load() converted to dbtng, no other changes:

Server Software:        Apache/2.2.8
Server Hostname:        d7.7
Server Port:            80

Document Path:          /node/
Document Length:        47529 bytes

Concurrency Level:      1
Time taken for tests:   138.724537 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Total transferred:      24057500 bytes
HTML transferred:       23764500 bytes
Requests per second:    3.60 [#/sec] (mean)
Time per request:       277.449 [ms] (mean)
Time per request:       277.449 [ms] (mean, across all concurrent requests)
Transfer rate:          169.35 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       0
Processing:   263  276  12.9    272     366
Waiting:      258  271  12.8    266     358
Total:        263  276  12.9    272     366

Percentage of the requests served within a certain time (ms)
  50%    272
  66%    279
  75%    282
  80%    283
  90%    295
  95%    299
  98%    318
  99%    330
 100%    366 (longest request)

Front page, multiple load:
Server Software:        Apache/2.2.8
Server Hostname:        d7.7
Server Port:            80

Document Path:          /node/
Document Length:        47529 bytes

Concurrency Level:      1
Time taken for tests:   97.631627 seconds
Complete requests:      500
Failed requests:        0
Write errors:           0
Total transferred:      24057500 bytes
HTML transferred:       23764500 bytes
Requests per second:    5.12 [#/sec] (mean)
Time per request:       195.263 [ms] (mean)
Time per request:       195.263 [ms] (mean, across all concurrent requests)
Transfer rate:          240.63 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.0      0       0
Processing:   184  194  11.6    190     316
Waiting:      178  188  11.5    184     308
Total:        184  194  11.6    190     316

Percentage of the requests served within a certain time (ms)
  50%    190
  66%    195
  75%    200
  80%    201
  90%    211
  95%    214
  98%    221
  99%    237
 100%    316 (longest request)