Lampiran 1 Format data log web IPB. hostname waktu Request status size

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(2)

Lampiran 1 Format data log web IPB.

hostname waktu Request status size

222.124.11.126 [20/Jan/2007:14:47:51 +0700] GET / HTTP/1.0 302 - 222.124.11.126 [20/Jan/2007:14:47:51 +0700] GET /ipb-bhmn/ HTTP/1.0 200 20011 222.124.11.127 [20/Jan/2007:14:47:51 +0700] GET / HTTP/1.0 302 - 222.124.11.127 [20/Jan/2007:14:47:51 +0700] GET /ipb-bhmn/ HTTP/1.0 200 20011 222.124.11.127 [20/Jan/2007:14:47:52 +0700] GET /ipb-bhmn/resources/ipb-pop.css HTTP/1.0 200 5389 222.124.11.127 [20/Jan/2007:14:47:52 +0700] GET /ipb-bhmn/ HTTP/1.0 200 16789 222.124.249.89 [20/Mar/2006:00:54:07 +0700] GET /ipb-bhmn/HTTP/1.0 200 172330 222.124.11.127 [20/Jan/2007:14:47:52 +0700] GET /ipb-bhmn/images/body/animasi-ipb.gif HTTP/1.0 200 625079 222.124.45.79 [20/Mar/2006:00:54:20 +0700] GET /ipb-bhmn/ HTTP/1.1 200 625079 222.124.45.79 [20/Jan/2007:16:48:01 +0700] GET /favicon.ico HTTP/1.1 404 297 222.124.81.113 [20/Jan/2007:16:48:01 +0700] GET /ipb-bhmn/ HTTP/1.1 200 20011 222.124.45.79 [20/Jan/2007:16:48:01 +0700] GET /ipb-bhmn/resources/ipb-pop.css HTTP/1.1 304 - 222.124.45.79 [20/Jan/2007:16:48:02 +0700] GET /ipb-bhmn/images/body/head-kiri.jpg HTTP/1.1 304 - 222.124.81.113 [20/Jan/2007:16:48:02 +0700] GET /ipb-bhmn/ HTTP/1.1 200 16789 222.124.45.79 [20/Jan/2007:16:48:01 +0700] GET /ipb-bhmn/jadwal/ HTTP/1.1 200 13319 222.124.45.79 [20/Jan/2007:16:48:02 +0700] GET /ipb-bhmn/images/body/guestbook.jpg HTTP/1.1 200 4440 62.150.130.26 [20/Jan/2007:16:48:04 +0700] GET /~tepfteta/laboratorium.php HTTP/1.1 404 312 210.123.182.13 [20/Jan/2007:16:48:04 +0700] GET /jadwaluts/jadwalruang.php?ruang=B023KOMP HTTP/1.1 404 311 222.124.45.79 [20/Jan/2007:16:48:02 +0700] GET /ipb-bhmn/jadwal/ HTTP/1.1 200 13319 222.124.45.79 [20/Jan/2007:16:48:05 +0700] GET /favicon.ico HTTP/1.1 404 297 222.124.45.79 [20/Jan/2007:16:48:02 +0700] GET /ipb-bhmn/images/body/animasi-ipb.gif HTTP/1.1 200 625079 222.124.11.127 [20/Jan/2007:16:48:05 +0700] GET / HTTP/1.0 302 - 222.124.11.127 [20/Jan/2007:16:48:05 +0700] GET /ipb-bhmn/ HTTP/1.0 200 20011 222.124.45.79 [20/Jan/2007:16:48:05 +0700] GET /ipb-bhmn/jadwal/uasmami.php HTTP/1.1 200 13671 222.124.45.79 [20/Jan/2007:16:48:09 +0700] GET /ipb-bhmn/jadwal/uasmami.php HTTP/1.1 200 13671 219.232.9.181 [20/Jan/2007:16:48:09 +0700] GET /layanan/pendaftaran/pasca04.html HTTP/1.1 404 318 220.76.4.112 [20/Jan/2007:16:48:09 +0700] GET /layanan/pendaftaran/pasca04.html HTTP/1.1 404 318 202.93.36.11 [20/Jan/2007:16:48:09 +0700] GET /%7Ehsrkom/extmenus/phpBB/posting.php HTTP/1.1 404 320 222.124.11.127 [20/Jan/2007:16:48:09 +0700] GET /ipb-bhmn/ HTTP/1.0 200 16789 222.124.11.126 [20/Jan/2007:16:48:11 +0700] GET / HTTP/1.0 302 - 222.124.11.126 [20/Jan/2007:16:48:11 +0700] GET /ipb-bhmn/ HTTP/1.0 200 20011 222.124.11.126 [20/Jan/2007:16:48:15 +0700] GET /ipb-bhmn/resources/ipb-pop.css HTTP/1.0 200 5389 222.124.11.126 [20/Jan/2007:16:48:16 +0700] GET /ipb-bhmn/ HTTP/1.0 200 9119

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Lampiran 2 Format data log proxy server (Squid).

Waktu size hostname Flag proxy server

Size file

get Status Request

11693432

95 54 172.17.2.4 TCP_DENI

ED/407 1875 GET

http://dl49cg.rapidshare.com/cgi-bin/uploadjs.cgi? - NONE/- text/html 11693433

01 650 172.17.2.4 TCP_IMS_

HIT/304 248 GET

http://images.rapidshare.com/img/st yles.css hsrkom NONE/- text/css 11693433

01 585 172.17.2.4 TCP_IMS_

HIT/304 264 GET

http://images.rapidshare.com/img/cs s_dropdown.js hsrkom NONE/- application/x-httpjavascript 11693433 01 2030 172.17.2.4 TCP_MISS/ 200 18727 POST http://ul27.rapidshare.com/files/101 79750/ABGsexy.3gp hsrkom DIRECT/195.122.131.54 text/html 11693433 02 171 172.17.2.4 TCP_IMS_ HIT/304 250 GET //images.rapidshare.com/img/dot.jp g hsrkom NONE/- image/jpeg 11693433

02 313 172.17.2.4 TCP_IMS_

HIT/304 250 GET

http://images.rapidshare.com/img/rs logo.jpg hsrkom NONE/- image/jpeg 11693433

02 877 172.17.2.4 TCP_IMS_

HIT/304 249 GET

http://images.rapidshare.com/img/te rminator_back.png hsrkom NONE/- image/png 11693433 02 877 172.17.2.4 TCP_IMS_ HIT/304 250 GET http://images.rapidshare.com/img/p aypal_buy.gif hsrkom NONE/- image/gif 11693433 02 877 172.17.2.4 TCP_IMS_ HIT/304 250 GET http://images.rapidshare.com/img/p hone.gif hsrkom NONE/- image/gif 11693433

03 443 172.17.2.4 TCP_IMS_

HIT/304 251 GET

http://images.rapidshare.com/img/wt eng.jpg hsrkom NONE/- image/jpeg 11693433 03 3205 172.17.2.4 TCP_MISS/ 200 329 GET http://dl49cg.rapidshare.com/cgi-bin/uploadjs.cgi? hsrkom DIRECT/82.129.39.99 text/html 11693433 03 1914 172.17.2.4 TCP_MISS/ 404 430 GET http://images.rapidshare.com/img/i mg/terminatr_back.png hsrkom DIRECT/195.122.131.251 text/html 11693433 04 4462 172.17.2.4 TCP_MISS/ 200 329 GET http://dl49cg.rapidshare.com/cgi-bin/uploadjs.cgi? hsrkom DIRECT/82.129.39.99 text/html 11693433 05 1151 172.17.2.4 TCP_MISS/ 404 346 GET http://ul27.rapidshare.com/favicon.ic o hsrkom DIRECT/195.122.131.54 text/html 11693433 10 1162 172.17.2.4 TCP_MISS/ 200 5413 GET http://rapidshare.com/files/3660342/ Liana.3gp hsrkom DIRECT/195.122.131.250 text/html 11693433 10 144 172.17.2.4 TCP_IMS_ HIT/304 248 GET http://images.rapidshare.com/img/st yles.css hsrkom NONE/- text/css 11693433

10 67 172.17.2.4 TCP_IMS_

HIT/304 264 GET

http://images.rapidshare.com/img/cs s_dropdown.js hsrkom NONE/- application/x-javascript 11693433 11 54 172.17.2.4 TCP_IMS_ HIT/304 250 GET http://images.rapidshare.com/img/d ot.jpg hsrkom NONE/- image/jpeg 11693433

11 736 172.17.2.4 TCP_IMS_

HIT/304 249 GET

http://images.rapidshare.com/img/te rminator_back.png hsrkom NONE/- image/png 11693433 11 736 172.17.2.4 TCP_IMS_ HIT/304 249 GET http://images.rapidshare.com/img/c heckbox.png hsrkom NONE/- image/png 11693433 12 1254 172.17.2.4 TCP_CLIE NT_REFRE SH_MISS/4 04 430 GET http://images.rapidshare.com/img/i mg/terminatr_back.png hsrkom DIRECT/195.122.131.251 text/html 11693433 13 49 172.17.2.4 TCP_IMS_ HIT/304 250 GET http://images.rapidshare.com/img/rs logo.jpg hsrkom NONE/- image/jpeg 11693433

30 848 172.17.2.4 TCP_IMS_

HIT/304 249 GET

http://images.friendster.com/200701 B/css/interior.css - NONE/- text/css 11693433 30 773 172.17.2.4 TCP_IMS_ HIT/304 264 GET http://images.friendster.com/200701 B/js/friendster_v1.js - NONE/- application/x-javascript 11693433 30 5195 172.17.2.4 TCP_MISS/ 200 9595 GET http://www.friendster.com/message s.php - DIRECT/209.11.168.204 text/html 11693433 31 149 172.17.2.4 TCP_IMS_ HIT/304 249 GET http://images.friendster.com/images /homebg.gif - NONE/- image/gif

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Lampiran 3 Contoh format data CPU dan memori pada web server IPB melalui protokol SNMP, sudah berupa hasil parsing menggunakan gawk, dan diformat ke Excel.

PID

Service rate (proses/senti

second)

Penggunaan

Memori Nama_Proses Tipe Aplikasi Aktif 0 53406764 16 KBytes "System Idle

Process" operatingSystem(1) running(1)

1 61206 212 KBytes "System" operatingSystem(2) running(1)

4 39 248 KBytes "smss.exe" application(4) running(1)

464 3453 964 KBytes "csrss.exe" application(4) running(1)

528 259 3264 KBytes "winlogon.exe" application(4) running(1)

584 760 2424 KBytes "services.exe" application(4) running(1)

636 2215 3460 KBytes "lsass.exe" application(4) running(1)

648 6 724 KBytes "svchost.exe" application(4) running(1)

920 14 5396 KBytes "ccApp.exe" application(4) running(1)

1060 92 3092 KBytes "ccSetMgr.exe" application(4) running(1)

1144 28 388 KBytes "ccEvtMgr.exe" application(4) running(1)

1184 221 2464 KBytes "spoolsv.exe" application(4) running(1)

1484 12 492 KBytes "msdtc.exe" application(4) running(1)

1524 0 200 KBytes "CpqRcmc.exe" application(4) running(1)

1712 53 200 KBytes "DefWatch.exe" application(4) running(1)

1760 150 3136 KBytes "inetinfo.exe" application(4) running(1)

2264 6 200 KBytes "pds.exe" application(4) running(1)

2280 97873 1704 KBytes "sqlservr.exe" application(4) running(1) 2324 14498 21648 KBytes "mysqld-nt.exe" application(4) running(1)

2396 389 2576 KBytes "snmp.exe" application(4) running(1)

2416 1 200 KBytes "snmptrap.exe" application(4) running(1)

2520 36907 4932 KBytes "Rtvscan.exe" application(4) running(1)

2560 17 200 KBytes "smhstart.exe" application(4) running(1)

2720 10 420 KBytes "mssearch.exe" application(4) running(1)

2864 0 200 KBytes "sysdown.exe" application(4) running(1)

2996 129 208 KBytes "hpsmhd.exe" application(4) running(1)

3008 0 200 KBytes "rotatelogs.exe" application(4) running(1)

3356 7 696 KBytes "alg.exe" application(4) running(1)

3540 150 336 KBytes "hpsmhd.exe" application(4) running(1)

3724 0 1208 KBytes "winlogon.exe" application(4) running(1)

4612 178 1132 KBytes "ctfmon.exe" application(4) running(1)

4788 4 280 KBytes "ctfmon.exe" application(4) running(1)

4824 3 2280 KBytes "sqlmangr.exe" application(4) running(1)

(5)

Lampiran 3 Lanjutan contoh format data CPU dan memori pada web server IPB melalui protokol SNMP, sudah berupa hasil parsing menggunakan gawk, dan diformat ke Excel. PID

Service rate (proses/ senti

second)

Penggunaan

Memori Nama_Proses Tipe Aplikasi Aktif

5448 4 676 KBytes "wmiprvse.exe" application(4) running(1)

5588 45 2196 KBytes "logon.scr" application(4) running(1)

5772 6 200 KBytes "iexplore.exe" application(4) running(1)

6404 32 12072 KBytes "Apache.exe" application(4) running(1)

6784 5246 35844 KBytes "ApacheMonitor.e

xe" application(4) running(1)

6984 3 2256 KBytes "cpqteam.exe" application(4) running(1)

7076 3 2096 KBytes "rdpclip.exe" application(4) running(1)

7444 3 3000 KBytes "explorer.exe" application(4) running(1)

7500 128 13032 KBytes "winlogon.exe" application(4) running(1) 7520 73 3892 KBytes "svchost.exe" application(4) running(1)

7560 3 252 KBytes "cpqteam.exe" application(4) running(1)

7680 1 112 KBytes "scrnsave.scr" application(4) running(1)

8736 3 200 KBytes "w3wp.exe" application(4) running(1)

8828 7 4488 KBytes "rdpclip.exe" application(4) running(1)

10328 51 228 KBytes "sqlmangr.exe" application(4) running(1)

10484 12 272 KBytes "fp.exe" application(4) running(1)

12344 409 3632 KBytes "ccApp.exe" application(4) running(1)

12640 14 13008 KBytes "explorer.exe" application(4) running(1)

(6)

Lampiran 4 Contoh format data CPU dan memori pada proxy server IPB yang diambil secara remote melalui Putty.

usage: top -hvbcisqS -d delay -p pid -n iterations

[H [2J [H [1m 08:05:29 up 16 days, 17:47, 3 users, load average: 2.73, 3.22, 3.84 [K

63 processes: 62 sleeping, 1 running, 0 zombie, 0 stopped [K CPU states: cpu user nice system irq softirq iowait idle [K total 18.6% 0.0% 25.4% 2.9% 6.8% 18.6% 27.4% [K

Mem: 384268k av, 315156k used, 69112k free, 0k shrd, 25164k buff [K 204072k actv, 64612k in_d, 4928k in_c [K

Swap: 779144k av, 153324k used, 625820k free 134372k cached [K [0m [K

[7m PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND [K [0m 20666 Squid 18 0 137M 121M 1660 S 25.5 32.2 120:28 0 Squid [K 1963 root 16 0 340 336 260 S 9.8 0.0 404:02 0 syslogd [K 1967 root 16 0 184 172 124 S 7.8 0.0 285:49 0 klogd [K 21597 nanik 20 0 1092 1092 808 R 0.9 0.2 0:00 0 top [K 1 root 15 0 112 80 56 S 0.0 0.0 0:22 0 init [K 2 root 15 0 0 0 0 SW 0.0 0.0 0:10 0 keventd [K 3 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kapmd [K 4 root 34 19 0 0 0 SWN 0.0 0.0 0:00 0 ksoftirqd/0 [K 7 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 bdflush [K 5 root 15 0 0 0 0 SW 0.0 0.0 4:43 0 kswapd [K 6 root 15 0 0 0 0 SW 0.0 0.0 0:54 0 kscand [K 8 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kupdated [K 9 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 mdrecoveryd [K 13 root 15 0 0 0 0 SW 0.0 0.0 4:57 0 kjournald [K 72 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 khubd [K [J [8;1H [H [1m 08:00:29 up 16 days, 17:57, 3 users, load average: 2.89, 2.69, 3.14 [K

(7)

Lampiran 5 Tabel hasil parsing jam sibuk web IPB data log 30 hari. Jam Jumlah akses

00.00-00.59 27421 01.00-01.59 18119 02.00-02.59 14467 03.00-03.59 13965 04.00-04.59 14893 05.00-05.59 17015 06.00-06.59 18414 07.00-07.59 35825 08.00-08.59 86743 09.00-09.59 143371 10.00-10.59 188972 11.00-11.59 195999 12.00-12.59 162380 13.00-13.59 222073 14.00-14.59 221426 15.00-15.59 196454 16.00-16.59 156104 17.00-17.59 121991 18.00-18.59 86970 19.00-19.59 131869 20.00-20.59 132916 21.00-21.59 95324 22.00-22.59 66714 23.00-23.59 41944

Lampiran 6 Tabel hasil parsing jam sibuk proxy server data 10 hari (172.17.0.11) IPB. Jam Jumlah Akses

17.00-18.00 100971 16.00-17.00 60327 15.00-16.00 205042 14.00-15.00 348823 13.00-14.00 303445 12.00-13.00 226661 11.00-12.00 219415 10.00-11.00 426025 09.00-10.00 403144 08.00-09.00 572676 07.00-08.00 493804

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Lampiran 7 Penurunan formulasi M/M/2 berdasar model Markov.

Berdasar rantai Markov, dengan λ0=λ1=λ2=λn=λ dan µ0=µ1=µ2=µn=µ, maka dengan menurunkan persamaan global balance:

p0+p1+p2+...+pn−1=1 1 2 ... 2 1 0 0+ p + p + + pn= p λ λ µ λ µ λ 1 ) 2 1 ... 2 1 2 1 1 ( 1 3 2 2 0 ⎟⎟ = ⎠ ⎞ ⎜⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + + ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ + + − n n p µ λ µ λ µ λ µ λ 1 2 1 1 0 1 0 − ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡ ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ =

∑

∞ = − n n n p µ λ

=

1 2 1 1 0 1 − ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛

∑

∞ = − n n n ρ 1 2 1 2 1 0 − ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ =

∑

∞ = n n n ρ 1 2 1 2 1 0 − ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ =

∑

∞ = n n ρ di mana k k n n − = ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎣ ⎡

∑

∞ = 1 1 0 maka: 1 2 1 1 2 1 − ⎟⎟ ⎟ ⎟ ⎠ ⎞ ⎜⎜ ⎜ ⎜ ⎝ ⎛ − = ρ 1 2 4 1 − ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ − = ρ sehingga nilai p0 ρ ρ + − = 2 2 0 p

(9)

Lampiran 7 Lanjutan penurunan formulasi M/M/2 berdasar model Markov.

n

p didapatkan dengan menurunkan persamaan local balance yaitu:

0 1 1 1 0 3 2 2 3 3 2 0 2 1 2 2 1 0 1 1 0 2 1 2 2 2 1 2 2 2 1 2 2 p p p p p p p p p p p p p p p p p p p n n n n n n ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ → = → = ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ → = → = ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ → = → = = → = − + − µ λ_µ _µλ λ µ λ µ λ µ λ µ λ µ λ µ λ µ λ µ λ 0 1 2 1 p p n n n − ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ = µ λ dengan µλ =ρ , maka: 0

2

1

2 p

p

n n n

⎟

⎠

⎞

⎜

⎝

⎛

=

ρ

Berdasar persamaan global balance,

ρ ρ + − = 2 2 0

p , maka utilisasi CPU adalah sebagai berikut:

(

)

0 0 0 0 0 0 0 0 0 0 0 1 ) 1 ( 2 1 2 2 2 2 ) 1 ( 2 2 2 2 2 2 p p p p p p p p p p p + − = + − = − = + − = + − = + − = + ρ ρ ρ ρ ρ ρ ρ ρ

Dengan menurunkan persamaan pn maka utilisasi CPU pada saat n > 0 dapat didapatkan dengan mengunakan persamaan: 1 1 + − = n n p p ρ

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Lampiran 8 Tabel nilai utilisasi CPU web server IPB setiap hari selama 16 hari dihitung menggunakan formulasi M/M/2. No Tgl n arival_rate (proses/ms) service_rate (proses/ms) Pn Utilisasi Utilisasi (%) 1 25/4/07 0 4.3 65.290 0.936 0.0658 6.586 2 27/4/07 0 5.4 312.5028 0.983 0.0173 1.728 3 28/4/07 0 5.4 490.2686 0.989 0.0110 1.1018 4 29/4/07 0 5.4 652.2828 0.992 0.00827 0.828 5 30/4/07 0 5.3 796.4765 0.993 0.00665 0.666 6 1/5/07 0 6.0 613.3202 0.990 0.00978 0.979 7 2/5/07 0 6.0 60.1505 0.905 0.09974 9.975 8 3/5/07 0 6.8 222.9862 0.9699 0.03049 3.049 9 4/5/07 0 6.9 221.2986 0.9692 0.03117 3.118 10 7/5/07 0 5.9 750.8630 0.992 0.00785 0.786 11 8/5/07 0 5.9 992.1476 0.994 0.00594 0.595 12 9/5/07 0 4.5 1610.5076 0.997 0.00279 0.279 13 10/5/07 0 5.6 113.6586 0.952 0.04927 4.927 14 12/5/07 0 5.4 793.0538 0.993 0.00680 0.680 15 15/5/07 0 4.5 1478.6192 0.9969 0.00304 0.304 16 16/5/07 0 4.4 1835.5915 0.9976 0.00239 0.239 Lampiran 9 Tabel nilai utilisasi CPU web server IPB terbesar menggunakan formulasi M/M/2.

n arival_rate (Proses/ms) service_rate (Proses/ms) Pn Utilisasi CPU Utilisasi CPU (%) 0 7.2 37.466 0.824 0.19217 19.21737 1 7.2 37.466 0.158 0.7264 72.63994 2 7.2 37.466 0.0152 0.97 97.0001 3 7.2 37.466 0.00146 0.99708 99.70779 4 7.2 37.466 0.00014 0.99972 99.97189 5 7.2 37.466 1.35093E-05 0.99997 99.9973 6 7.2 37.466 1.29806E-06 1 99.99974 7 7.2 37.466 1.24727E-07 1 99.99998 8 7.2 37.466 1.19846E-08 1 100 9 7.2 37.466 1.15156E-09 1 100 10 7.2 37.466 1.1065E-10 1 100 11 7.2 37.466 1.0632E-11 1 100 12 7.2 37.466 1.0216E-12 1 100

(11)

Lampiran 10 Grafik hasil pengukuran peluang idle dan utilisasi CPU terbesar pada web server IPB.

Utilisasi CPU web server terbesar

0 20 40 60 80 100 120 0 1 2 3 4 5 6 7 8 9 10 11 12 n U tilis a si C P U

Peluang idle CPU web server

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 1 2 3 4 5 6 7 8 9 10 11 12 n Pn .

(12)

Lampiran 11 Tabel nilai utilisasi CPU web server IPB terkecil menggunakan formulasi M/M/2. n arival_rate

(proses/ms)

service_rate

(proses/ms) Pn Utilisasi CPU

Utilisasi CPU (%) 0 44 11354.66 0.996132433 0.003875061 0.387 1 44 11354.66 0.003860074 0.992309538 99.23 2 44 11354.66 7.47901E-06 0.999985042 99.99 3 44 11354.66 1.44908E-08 0.999999971 99.9999 4 44 11354.66 2.80764E-11 1 99.9999 5 44 11354.66 5.43989E-14 1 100 6 44 11354.66 1.05399E-16 1 100 7 44 11354.66 2.04215E-19 1 100 8 44 11354.66 3.95672E-22 1 100 9 44 11354.66 7.66627E-25 1 100 10 44 11354.66 1.48536E-27 1 100 11 44 11354.66 2.87794E-30 1 100 12 44 11354.66 5.57609E-33 1 100

(13)

Lampiran 12 Grafik hasil pengukuran peluang idle dan utilisasi CPU terkecil pada web server IPB.

Peluang idle terbesar CPU web server

-0.2 0 0.2 0.4 0.6 0.8 1 1.2 1 2 3 4 5 6 7 8 9 10 11 12 13 n Pn .

Utilisasi CPU web server Terkecil

0 20 40 60 80 100 120 1 2 3 4 5 6 7 8 9 10 11 12 13 n U tilis as i C P U

(14)

Lampiran 13 Contoh grafik hasil validasi utilisasi CPU web server IPB pada 5 menit ke-2 hingga 5 menit ke-3.

(15)

Lampiran 14 Contoh grafik hasil validasi penggunaan memori web server IPB pada 5 menit ke-2 dan 5 menit ke-3.

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Lampiran 15 Tabel hasil validasi pengukuran CPU web server IPB tanggal 3 Juli 2007 pada jam sibuk IPB pukul 13.00 hingga 14.00.

Urutan validasi Rata-rata (%) Terbesar (%) Terkecil (%) validasi 1 3.504 28.125 0 validasi 2 4.545 25.781 0 validasi 3 1.026 6.25 0 validasi 4 1.215 7.031 0 validasi 5 2.644 35.156 0 validasi 6 3.378 29.688 0 validasi 7 2.454 26.563 0 validasi 8 6.006 53.906 0 validasi 9 4.009 35.938 0 validasi 10 2.289 41.406 0 validasi 11 4.774 35.938 0 validasi 12 3.52 46.094 0 rata-rata validasi 3.280 30.989 0 hasil pengukuran 0.8 9.97 0.24 VALID (%) 97.5 76.65 99.76

Lampiran 16 Tabel hasil validasi pengukuran memori web server IPB tanggal 6 Juli 2007 pada jam sibuk IPB pukul 13.00 hingga 14.00.

Urutan validasi Rata-rata (%) Terbesar (%) Terkecil (%) validasi 1 45.885 46.307 45.837 validasi 2 44.554 44.889 44.504 validasi 3 44.664 45.373 44.524 validasi 4 44.652 45.344 44.433 validasi 5 44.853 44.912 44.829 validasi 6 45.415 45.851 45.345 validasi 7 45.316 45.591 45.288 validasi 8 45.576 46.086 45.258 validasi 9 44.734 45.161 44.693 validasi 10 44.716 45.044 44.691 validasi 11 44.698 44.727 44.685 validasi 12 44.512 45.107 44.483 rata-rata validasi 44.965 45.366 44.880 hasil pengukuran 36.45 47.27 25.87 VALID (%) 76.640 95.972 26.51

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Lampiran 17 Tabel utilisasi CPU untuk setiap proses yang didefinisikan oleh sistem operasi. Tanggal cpu user system irq softirq iowait Total

Use Squid(%) 4Juni 38.67% 19.92% 1.53% 4.52% 18.47% 83.10% 29.70% 5Juni 50.97% 18.73% 1.23% 5.10% 20.05% 96.08% 33.12% 8Juni 28.90% 7.62% 0.85% 2.40% 8.45% 48.22% 20.87% 12Juni 51.13% 14.43% 0.87% 3.65% 9.25% 79.33% 21.60% 14Juni 26.07% 3.93% 0.12% 1.00% 2.85% 33.97% 1.10% 18Juni 9.05% 5.77% 0.40% 2.17% 7.43% 24.82% 13.23% 19Juni 21.28% 5.00% 0.52% 1.70% 3.95% 32.45% 12.78% 20Juni 31.20% 16.85% 1.18% 1.38% 2.27% 52.88% 9.98% 22Juni 20.28% 7.30% 0.30% 1.47% 3.00% 32.35% 9.45% 23Juni 24.52% 12.53% 0.33% 1.65% 4.12% 43.15% 23.45% rata-rata 30.21% 11.21% 0.73% 2.50% 7.98% 52.64% 17.528 Lampiran 18 Hasil pengukuran service time selama satu jam/hari untuk request pengguna pada

proxy server IPB.

Tanggal Service time ⎟⎟_⎠ ⎞ ⎜⎜ ⎝ ⎛ µ 1 (second) Service Rate ( )µ (Request/detik) 12Juni 0.000911 1097.695 13Juni 0.00598 167.160 14Juni 0 0 18Juni 0.0207 48.321 19Juni 0.00102 983.284 20Juni 0.0175 57.303 26Juni 0.0245 40.803 27Juni 0.00964 103.772 Average 0.00802 124.688

Lampiran 19 Tabel hasil pengukuran peluang idle dan rata-rata utilisasi CPU terbesar untuk request pengguna proxy server IPB.

n arrival rate (request/second)

service_rate

(request/second) Pn Utilisasi CPU

Utilisasi CPU (%) 0 7.37 40.803 0.819 0.181 18.071 1 7.37 40.803 0.148 0.852 85.194 2 7.37 40.803 0.026 0.973 97.324 3 7.37 40.803 0.0048 0.995 99.516 4 7.37 40.803 0.00087 0.999 99.912 5 7.37 40.803 0.0001579 0.9998 99.984 6 7.37 40.803 2.85361E-05 0.9999 99.997 7 7.37 40.803 5.1569E-06 0.99999 99.999 8 7.37 40.803 9.31927E-07 0.999999 99.999 9 7.37 40.803 1.68413E-07 0.999999 99.999 10 7.37 40.803 3.04347E-08 0.9999999 99.999 11 7.37 40.803 5.49999E-09 0.99999999 99.999 12 7.37 40.803 9.93929E-10 0.99999999 99.999

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Lampiran 20 Grafik hasil pengukuran peluang idle dan rata-rata utilisasi CPU terbesar untuk request pengguna proxy server IPB.

Peluang idle CPU pada request pengguna terbesar

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 11 12 13 n Pn

Utilisasi CPU untuk request pengguna terbesar

0 0.2 0.4 0.6 0.8 1 1.2 1 2 3 4 5 6 7 8 9 10 11 12 13 n u tilis a si C P U ( % )

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Lampiran 21 Tabel hasil pengukuran peluang idle dan rata-rata utilisasi CPU untuk hit request pengguna proxy server IPB.

n hit_rate (request/second) service_rate (request/second) Pn Utilisasi CPU Utilisasi CPU (%) 0 2.15 124.688 0.982757 0.01724 1.7243 1 2.15 124.688 0.016945679 0.98305 98.3054321 2 2.15 124.688 0.000292194 0.99971 99.97078057 3 2.15 124.688 5.03831E-06 0.99999 99.99949617 4 2.15 124.688 8.68755E-08 1 99.99999131 5 2.15 124.688 1.49799E-09 1 99.99999985 6 2.15 124.688 2.58299E-11 1 100 7 2.15 124.688 4.45385E-13 1 100 8 2.15 124.688 7.67978E-15 1 100 9 2.15 124.688 1.32422E-16 1 100 10 2.15 124.688 2.28336E-18 1 100 11 2.15 124.688 3.9372E-20 1 100 12 2.15 124.688 6.78891E-22 1 100

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Lampiran 22 Grafik hasil pengukuran peluang idle dan rata-rata utilisasi CPU untuk hit request pengguna proxy server IPB.

Peluang idle rata-rata CPU pada hit request

-0.2 0 0.2 0.4 0.6 0.8 1 1.2 1 2 3 4 5 6 7 8 9 10 11 12 13 n Pn

Utilisasi CPU rata-rata untuk hit request

0 20 40 60 80 100 120 1 2 3 4 5 6 7 8 9 10 11 n u tilis a si C P U ( % )

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Lampiran 23 Tabel hasil pengukuran peluang idle dan utilisasi CPU terbesar untuk hit request pengguna proxy server IPB.

n hit_rate (request/second) service_rate (request/second) Pn Utilisasi CPU Utilisasi CPU (%) 0 2.15 40.803 0.9473 0.05269 5.269 1 2.15 40.803 0.0499 0.95008 95.008 2 2.15 40.803 0.00263 0.997 99.736 3 2.15 40.803 0.000138 0.9998 99.986 4 2.15 40.803 7.30258E-06 0.999 99.999 5 2.15 40.803 3.84789E-07 0.999 99.9999 6 2.15 40.803 2.02754E-08 0.999 99.99999 7 2.15 40.803 1.06835E-09 0.999 99.99999 8 2.15 40.803 5.6294E-11 1 99.99999 9 2.15 40.803 2.96625E-12 1 100 10 2.15 40.803 1.56298E-13 1 100 11 2.15 40.803 8.2357E-15 1 100 12 2.15 40.803 4.33957E-16 1 100

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Lampiran 24 Grafik hasil pengukuran peluang idle dan utilisasi CPU terbesar untuk hit request pengguna proxy server IPB.

Peluang Idle CPU pada hit request terbesar

-0.2 0 0.2 0.4 0.6 0.8 1 0 1 2 3 4 5 6 7 8 9 10 11 12 n Pn

Utilisasi CPU untuk hit request terbesar

0 20 40 60 80 100 120 0 1 2 3 4 5 6 7 8 9 10 11 12 n u tilis a si C P U ( % )

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