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For more information about ab, see the following web site:
http://httpd.apache.org/docs/2.0/programs/ab.html
Benchmark Results
In the static web page testing, several web pages were used with different sizes that varied from
5KB to 200KB. For each web page, ab was run with a varying number of concurrent connections
and total requests to determine the maximum requests per second and the maximum response
time for 80% of the fastest requests. For this test, the concurrent connections varied in number
from 100 to 2500 and the total number of requests was set to 100 times the number of concurrent
connections.
The benchmark results for the testing are presented in the following sections and show the
maximum number of requests per second and maximum response time for 80% of the fastest
requests that each system can handle, depending on the number of concurrent connections and
the size of pages.
The following tables show that, with regard to requests per second, having more connections
can negatively impact the value for small size pages like the 5KB page but have little influence
for bigger size pages. In regard to response time, when the number of concurrent connections is
larger, so is the response time. For relatively small pages such as a 5KB size page, both the HP
ProLiant BL460c and BL480c servers, configured with 2 Quad-Core processors, can handle more
than 10,000 requests per second even with 2500 concurrent connections. However, the HP ProLiant
BL465c server, configured with 2 Dual-Core Opteron processors, can process fewer requests. For
pages over 30KB, the number of requests that all three servers can handle per second is stable
and does not vary as user connections are increased.
HP Proliant BL460c Server
The HP ProLiant BL460c server has features that are equal to standard 1U rack-mount servers.
The two-processor, dual-core or quad-core ProLiant BL460c combines power-efficient compute
power, and high density with expanded memory and I/O for maximum performance. The
ProLiant c7000 enclosure supports up to 16 BL460c server blades, two more servers than the IBM
BladeCenter, and each BL460c supports double the memory capacity of the HS21 server without
an expansion blade. The Proliant BL460c now comes with dual-core and quad-core Intel® Xeon®
processors, DDR2 fully buffered DIMMs, Serial Attached SCSI (SAS) or Serial ATA (SATA), hard
drives, and support of multi-function NICs and multiple I/O cards. The BL460c provides a
performance system ideal for the full range of scale-out applications. In this small form factor,
the BL460c includes more features to enable high-availability, such as hot plug hard drives,
mirrored memory, online spare memory, memory interleaving, embedded RAID capability, and
enhanced remote Lights-Out management. Table 5 provides the benchmark results that were
obtained using a ProLiant BL460c server configured with two Quad-Core Intel® Xeon® processors
running at 3.0GHz.
Table 5 Static Web Page Test Results for the HP ProLiant BL460c Server
200K80K30K5KUser Connections
resp timereq/secresp timereq/secresp timereq/secresp timereq/sec
189572.57761426.88263769.51618886.63100
328572.961151427.35513770.53917643.76200
1448572.504671425.38643773.201017230.17500
3008571.3110331424.563213766.081215180.411000
4139570.1416221423.593373772.206914174.951500
5217569.1621391421.595453731.9812312617.912000
Static Web Page Benchmark 15