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Performance: 32-bit vs 64-bit uBuntu 12.04 LTS 2012-09-27 14:04
分類: ✔️STREAM-32-bits ✔️STREAM-64-bits
個人: ✔️STREAM-32-bits ✔️STREAM-64-bits |
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32-bit Ubuntu vs 64-bit Ubuntu Performance
Test-Box: Linode Xen Hypervisor VPS
Test-OS: uBuntu 12.04 32-bit(x86) vs 64-bit(x86_64)
OS-KERN: 3.5.2
32-bit :: Ubuntu 12.04 @ Linode 2048 (Xeon 5520)
代碼:
#
#STREAM-32-bits Test App (Single Thread)
#
Function Rate (MB/s) Avg time Min time Max time
Copy: 4186.3548 0.0078 0.0076 0.0083
Scale: 3886.7650 0.0083 0.0082 0.0085
Add: 4990.6159 0.0097 0.0096 0.0098
Triad: 4618.8864 0.0105 0.0104 0.0105
# hdparm -T /dev/xvda
Timing cached reads: 12992 MB in 1.99 seconds = 6532.85 MB/sec
# /proc/meminfo
Memory Consumed After First Boot: 80 ~ 90 MB @ 32-bit
#
# Apache Performance Test (avg 4.996 ms)
#
Concurrency Level: 32
Time taken for tests: 163.706 seconds
Complete requests: 1048576
Failed requests: 0
Write errors:0
Total transferred: 475004928 bytes
HTML transferred: 185597952 bytes
Requests per second: 6405.26 [#/sec] (mean)
Time per request: 4.996 [ms] (mean)
Time per request: 0.156 [ms] (mean, across all concurrent requests)
Transfer rate: 2833.57 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 3 46.1 1 1008
Processing: 0 2 18.5 1 3559
Waiting: 0 2 18.3 1 3559
Total: 1 5 49.7 2 3559
Percentage of the requests served within a certain time (ms)
50% 2
66% 3
75% 3
80% 3
90% 4
95% 5
98% 6
99% 6
100% 3559 (longest request)
64-bit :: Ubuntu 12.04 @ Linode 2048 (Xeon 5520)
代碼:
#
#STREAM-64-bits Test App (Single Thread)
#
Function Rate (MB/s) Avg time Min time Max time
Copy: 7376.6270 0.0046 0.0043 0.0049
Scale: 6719.9583 0.0049 0.0048 0.0051
Add: 7432.5910 0.0067 0.0065 0.0073
Triad: 7363.0030 0.0069 0.0065 0.0078
# hdparm -T /dev/xvda
Timing cached reads: 13896 MB in 1.99 seconds = 6997.52 MB/sec
# /proc/meminfo
Memory Consumed After First boot: 120 ~ 140 MB @ 64-bit
#
# Apache Performance Test (avg 4.996 ms)
#
Concurrency Level: 32
Time taken for tests: 164.303 seconds
Complete requests: 1048576
Failed requests: 0
Write errors: 0
Total transferred: 475004928 bytes
HTML transferred: 185597952 bytes
Requests per second: 6381.96 [#/sec] (mean)
Time per request: 5.014 [ms] (mean)
Time per request: 0.157 [ms] (mean, across all concurrent requests)
Transfer rate: 2823.27 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 3 38.7 1 1022
Processing: 0 2 12.9 2 2882
Waiting: 0 2 12.4 1 2882
Total: 1 5 40.9 3 2883
Percentage of the requests served within a certain time (ms)
50% 3
66% 4
75% 4
80% 4
90% 5
95% 6
98% 6
99% 7
100% 2883 (longest request)
Summary between {32 vs 64} bit OS @ 64-bit CPU
Q: What's the diff?
A:
Steam-CPU-Test ==> Of course, stream-64-bit got far better result.
Memory Consumed ==> 64-bit consumed some more memory.
Apache Static Test ==> No Big Difference.
Q: My application are 64-bit-ONLY software or CPU/Floating-demand?
A: Try 64-bit Distro.
Q: My application are gcc/make cross-build for both 32-bit and 64-bit embedded system?
A: If there is no memory insufficient or deployment issue, Try 64-bit distro as possible.
Q: My application are LAMP/LEMP Web Content Service (Linux/Apache/Nginx/MySQL/PHP)?
Ans1:
Memory < 4GB :: Try 32-bit Distro first
Memory >= 4GB :: Try 64-bit Distro first
Do some proper test before production,
because even LAMP/LEMP Web-Applications varied too;
most are I/O or Net-Bandwidth bound, yet some specific ones are CPU-bound.
________________
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爪哇禾雀
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