聲明：本測試純技術研究與分析，不附加任何其它目的，僅爲本人筆記。
原創內容，任何轉載請務必註明出處，否則必追究。
| 主機名： | svr01 |
| 備註： | - |
| 機型： | 小型主機（ 4ECU / 2048內存 / 30GB 硬盤） |
| 鏡像： | linux centos54 64 v111110 |
| 安全策略： | 22 |
| 物理地址： | 00:16:3e:01:05:b1 |
| 內網IP： | 172.17.12.xx |
| 內網掩碼： | 255.255.192.0 |
| 外網IP： | 118.244.225.45 |
| 外網域名： | vm-172-17-12-xx.hb01.sdcloud.cn |
| 主機名： | svr02 |
| 備註： | - |
| 機型： | 小型主機（ 4ECU / 2048內存 / 30GB 硬盤） |
| 鏡像： | linux ubuntu1204 32 20121017 |
| 安全策略： | 22 |
| 物理地址： | 00:16:3e:01:06:6e |
| 內網IP： | 172.17.12.xx |
| 內網掩碼： | 255.255.192.0 |
| 外網IP： | 211.101.12.222 |
| 外網域名： | vm-172-17-12-xx.hb01.sdcloud.cn |
| 主機名： | svr03 |
| 備註： | - |
| 機型： | 小型主機（ 4ECU / 2048內存 / 30GB 硬盤） |
| 鏡像： | linux centos62 64 |
| 安全策略： | 22 |
| 物理地址： | 00:16:3e:01:01:e9 |
| 內網IP： | 172.17.10.xx |
| 內網掩碼： | 255.255.192.0 |
| 外網IP： | 211.101.1.228 |
| 外網域名： | vm-172-17-10-xx.hb01.sdcloud.cn |
問題： svr01、svr03在進行兩項CPU測試時，cpu均無法打滿，總是在低值波動。但在大素數測試中結果表現差異較大，考慮系統或生產環境的原因。
測試情況統計：
主機svr01 CPU性能測試(尋找大素數)
find prime during 2 - 20000000 ： 時間過長放棄
主機svr01 CPU測試(UnixBench 5.1.3)
========================================================================
Benchmark Run: Fri Dec 28 2012 15:58:46 - 16:28:45
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 7179260.5 lps (10.0 s, 7 samples)
Double-Precision Whetstone 3058.7 MWIPS (7.1 s, 7 samples)
Execl Throughput 760.5 lps (30.0 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 107427.5 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 28072.4 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 322849.7 KBps (30.0 s, 2 samples)
Pipe Throughput 147751.9 lps (10.0 s, 7 samples)
Pipe-based Context Switching 43900.1 lps (10.0 s, 7 samples)
Process Creation 1522.7 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 1468.5 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 203.1 lpm (60.1 s, 2 samples)
System Call Overhead 123872.5 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 7179260.5 615.2
Double-Precision Whetstone 55.0 3058.7 556.1
Execl Throughput 43.0 760.5 176.9
File Copy 1024 bufsize 2000 maxblocks 3960.0 107427.5 271.3
File Copy 256 bufsize 500 maxblocks 1655.0 28072.4 169.6
File Copy 4096 bufsize 8000 maxblocks 5800.0 322849.7 556.6
Pipe Throughput 12440.0 147751.9 118.8
Pipe-based Context Switching 4000.0 43900.1 109.8
Process Creation 126.0 1522.7 120.8
Shell Scripts (1 concurrent) 42.4 1468.5 346.4
Shell Scripts (8 concurrent) 6.0 203.1 338.5
System Call Overhead 15000.0 123872.5 82.6
========
System Benchmarks Index Score 231.5
主機svr01 IO測試(dd)
root@SNDA-172-17-12-58:/home# time dd if=/dev/zero of=/data/test.img bs=1k count=8192000
8388608000 bytes (8.4 GB) copied, 54.468 s, 154 MB/s
[root@SNDA-172-17-12-28 home]# time dd if=/dev/zero of=/data/test.img bs=8k count=1024000
8388608000 bytes (8.4 GB) copied, 46.1496 seconds, 182 MB/s
[root@SNDA-172-17-12-28 home]# time dd if=/dev/zero of=/data/test.img bs=256k count=32768
8589934592 bytes (8.6 GB) copied, 33.017 seconds, 260 MB/s
[root@SNDA-172-17-12-28 home]# time dd if=/dev/zero of=/data/test.img bs=1MB count=8192
8192000000 bytes (8.2 GB) copied, 29.4471 seconds, 278 MB/s
主機svr01 IO測試（iozone）
Command line used: ./iozone -r16k -P0 -s512m -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
524288 16 341030 719114 1747114 1591669 1120228 688255 1286915
Command line used: ./iozone -r16k -P0 -s1G -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
1048576 16 209891 652653 1679314 1471155 1073943 583257 1132575
Command line used: ./iozone -I -r16k -P0 -s512m -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
524288 16 106975 160305 122218 121797 7986 15207 9642
Command line used: ./iozone -I -r16k -P0 -s1G -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
1048576 16 113686 165463 87785 65743 3901 8404 19313
主機svr02 CPU性能測試(尋找大素數)
find prime during 2 - 20000000 using: 343684 ms
主機svr02 CPU性能測試(UnixBench 5.1.3)
========================================================================
Benchmark Run: Fri Dec 28 2012 15:01:07 - 15:29:42
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 8291582.4 lps (10.0 s, 7 samples)
Double-Precision Whetstone 1395.8 MWIPS (10.4 s, 7 samples)
Execl Throughput 1544.5 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 313859.6 KBps (30.1 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 86153.0 KBps (30.1 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 707569.5 KBps (30.0 s, 2 samples)
Pipe Throughput 428021.1 lps (10.5 s, 7 samples)
Pipe-based Context Switching 101968.1 lps (10.0 s, 7 samples)
Process Creation 6207.3 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 3128.2 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 409.3 lpm (60.1 s, 2 samples)
System Call Overhead 1541982.7 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 8291582.4 710.5
Double-Precision Whetstone 55.0 1395.8 253.8
Execl Throughput 43.0 1544.5 359.2
File Copy 1024 bufsize 2000 maxblocks 3960.0 313859.6 792.6
File Copy 256 bufsize 500 maxblocks 1655.0 86153.0 520.6
File Copy 4096 bufsize 8000 maxblocks 5800.0 707569.5 1219.9
Pipe Throughput 12440.0 428021.1 344.1
Pipe-based Context Switching 4000.0 101968.1 254.9
Process Creation 126.0 6207.3 492.6
Shell Scripts (1 concurrent) 42.4 3128.2 737.8
Shell Scripts (8 concurrent) 6.0 409.3 682.1
System Call Overhead 15000.0 1541982.7 1028.0
========
System Benchmarks Index Score 547.7
主機svr02 IO測試(dd)
root@SNDA-172-17-12-58:/home# time dd if=/dev/zero of=/data/test.img bs=1KB count=8192000
8192000000 bytes (8.2 GB) copied, 54.2757 s, 151 MB/s
root@SNDA-172-17-12-58:/home# time dd if=/dev/zero of=/data/test.img bs=8k count=1024000
8388608000 bytes (8.4 GB) copied, 40.9344 s, 205 MB/s
root@SNDA-172-17-12-58:/home# time dd if=/dev/zero of=/data/test.img bs=256k count=32768
8589934592 bytes (8.6 GB) copied, 39.4094 s, 218 MB/s
root@SNDA-172-17-12-58:/home# time dd if=/dev/zero of=/data/test.img bs=1MB count=8192
8192000000 bytes (8.2 GB) copied, 34.8569 s, 235 MB/s
主機svr02 IO測試(iozone )
Command line used: ./iozone -r16k -P0 -s512m -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
524288 16 234612 108695 2331495 2037993 1607081 32405 1952335
Command line used: ./iozone -r16k -P0 -s1G -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
1048576 16 185217 189748 2370621 2076812 1678763 11132 1878198
Command line used: ./iozone -I -r16k -P0 -s512m -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
524288 16 128107 91400 138879 143835 9291 12474 17084
Command line used: ./iozone -I -r16k -P0 -s1G -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
1048576 16 114410 119887 143978 85175 3638 7588 14241
主機svr03 CPU性能測試(尋找大素數)
find prime during 2 - 20000000 using: 167219 ms
主機svr03 CPU性能測試(UnixBench 5.1.3)
========================================================================
Benchmark Run: Fri Dec 28 2012 18:16:22 - 18:47:13
1 CPU in system; running 1 parallel copy of tests
Dhrystone 2 using register variables 12107222.2 lps (10.0 s, 7 samples)
Double-Precision Whetstone 2948.6 MWIPS (9.9 s, 7 samples)
Execl Throughput 588.5 lps (29.9 s, 2 samples)
File Copy 1024 bufsize 2000 maxblocks 94116.4 KBps (30.0 s, 2 samples)
File Copy 256 bufsize 500 maxblocks 24749.4 KBps (30.0 s, 2 samples)
File Copy 4096 bufsize 8000 maxblocks 305443.5 KBps (30.1 s, 2 samples)
Pipe Throughput 148183.3 lps (10.0 s, 7 samples)
Pipe-based Context Switching 30945.4 lps (10.0 s, 7 samples)
Process Creation 1241.2 lps (30.0 s, 2 samples)
Shell Scripts (1 concurrent) 1112.7 lpm (60.0 s, 2 samples)
Shell Scripts (8 concurrent) 150.1 lpm (60.4 s, 2 samples)
System Call Overhead 145249.5 lps (10.0 s, 7 samples)
System Benchmarks Index Values BASELINE RESULT INDEX
Dhrystone 2 using register variables 116700.0 12107222.2 1037.5
Double-Precision Whetstone 55.0 2948.6 536.1
Execl Throughput 43.0 588.5 136.9
File Copy 1024 bufsize 2000 maxblocks 3960.0 94116.4 237.7
File Copy 256 bufsize 500 maxblocks 1655.0 24749.4 149.5
File Copy 4096 bufsize 8000 maxblocks 5800.0 305443.5 526.6
Pipe Throughput 12440.0 148183.3 119.1
Pipe-based Context Switching 4000.0 30945.4 77.4
Process Creation 126.0 1241.2 98.5
Shell Scripts (1 concurrent) 42.4 1112.7 262.4
Shell Scripts (8 concurrent) 6.0 150.1 250.1
System Call Overhead 15000.0 145249.5 96.8
========
System Benchmarks Index Score 212.0
主機svr03 IO測試(dd)
[root@SNDA-172-17-10-248 home]# time dd if=/dev/zero of=/data/test.img bs=1k count=8192000
8388608000 bytes (8.4 GB) copied, 127.819 s, 65.6 MB/s
[root@SNDA-172-17-10-248 home]# time dd if=/dev/zero of=/data/test.img bs=8k count=1024000
8388608000 bytes (8.4 GB) copied, 51.1438 s, 164 MB/s
[root@SNDA-172-17-10-248 home]# time dd if=/dev/zero of=/data/test.img bs=256k count=32768
8589934592 bytes (8.6 GB) copied, 42.0778 s, 204 MB/s
[root@SNDA-172-17-10-248 home]# time dd if=/dev/zero of=/data/test.img bs=1MB count=8192
8192000000 bytes (8.2 GB) copied, 37.5368 s, 218 MB/s
主機svr03 IO測試
Command line used: ./iozone -r16k -P0 -s512m -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
524288 16 191420 346583 1909348 1912503 1384704 213525 1379393
Command line used: ./iozone -r16k -P0 -s1G -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
1048576 16 127795 300081 1900796 1708446 1176290 15589 1454434
Command line used: ./iozone -I -r16k -P0 -s512m -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
524288 16 76516 136381 142755 126256 12236 13244 15596
Command line used: ./iozone -I -r16k -P0 -s1G -i0 -i1 -i2 -i5 -i8
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
1048576 16 96240 138632 134615 143562 4683 8133 16112