8. Mainframe Statistics

8.1 Usage by Departmental Group (see Notes on page 31)

Vax Usage for Year Ending 15th July 1996
Vax Usage for Year Ending 17th July 1995
Sable Usage for Year Ending 15th July 1996
Ermine Usage for Year Ending 15th July 1996
Sable Usage for Year Ending 17th July 1995
Convex Usage for Year Ending 15th July 1996
Convex Usage for Year Ending 17th July 1995

8.2 Workload and Availability

Vax Workload and Availability 1995/6
Sable Workload and Availability 1995/6
Ermine Workload and Availability 1995/6
Convex Workload and Availability 1995/6
HFS Workload and Availability 1995/6





8.1 Usage by Departmental Group (see Notes on page 31)



Vax Usage for Year Ending 15th July 1996

Departmental Group Interactive jobs Batch jobs Total Disk Usage (MB)
no. CPU Hours no. CPU Hours CPU Hours quota usage at 15/7/96
Chemistry 95063 188 27218 301 489 1730 1368
Physics 46354 79 7792 602 681 2167 1343
Other Physical Sci. 99574 108 10448 382 490 1800 1498
Mathematics 38244 99 28455 333 433 850 665
Biological Sciences 67806 66 12336 755 821 1660 1376
Medical Sciences 144990 186 21155 130 316 5549 4128
Social Sciences 109136 224 30034 347 570 6663 5179
Humanities 244107 197 27508 38 234 4089 2904
Other Acad. Users 8479 10 1423 18 29 413 283
Non-Acad. Users 34131 39 8843 52 92 745 547
Computing Services 37046 85 4340 17 102 1329 1002
System Overheads 13932 108 217321 1487 1595 9428 6045
Totals 938862 1389 396873 4462 5852 36422 26337




Vax Usage for Year Ending 17th July 1995

Departmental Group Interactive jobs Batch jobs Total Disk Usage (MB)
no. CPU Hours no. CPU Hours CPU Hours quota usage at 17/7/95
Chemistry 135592 215 43664 518 733 1803 1456
Physics 82085 153 14406 1195 1349 2454 1499
Other Physical Sci. 128844 151 8892 159 310 1800 1533
Mathematics 57306 194 53831 2015 2209 867 662
Biological Sciences 99965 112 30120 44 156 1660 1317
Medical Sciences 208151 248 23405 120 368 5384 3980
Social Sciences 168534 311 31703 358 669 6539 5422
Humanities 287152 238 22009 29 268 3491 2652
Other Academic Users 17082 24 1517 4 28 393 208
Non-Academic Users 48669 77 9012 46 123 1354 783
Computing Services 44719 90 5519 19 109 1082 952
System Overheads 19617 289 289074 2321 2610 8511 5022
Total 1297716 2102 533152 6829 8931 35335 25486




Sable Usage for Year Ending 15th July 1996

Departmental Group Sessions CPU Usage (hours) Disk Use at 15/7/96 (MB)
quota usage
Chemistry 18189 1139 257 118
Physics 16722 2612 293 84
Other Physical Sciences 22054 85 514 149
Mathematics 8663 42 231 77
Biological Sciences 22200 166 499 171
Medical Sciences 39452 816 864 159
Social Sciences 30685 2161 638 167
Humanities 69308 104 1286 277
Other Academic Users 4516 42 51 12
Non-Academic Users 76274 421 1453 481
Standard Users (eg U/Gs) 2356039 9638 34596 6904
Computing Services 20864 3352 3254 3033
System Overheads 632802 2678 410 654
Totals 3317768 23256 44346 12286




Ermine Usage for Year Ending 15th July 1996

Departmental Group Sessions CPU Usage (hours) Disk Use at 15/7/96 (MB)
quota usage
Physics 1947 484 303 97
Chemistry 1190 346 258 112
Other Physical Sciences 1623 7 517 151
Mathematics 564 0 231 77
Biological Sciences 1459 141 490 171
Medical Sciences 2981 263 861 213
Social Sciences 3077 16 594 165
Humanities 6573 2 1316 281
Other Academic Users 0 0 0 0
Non-Academic Users 744 0 272 39
Standard Users 28560 68 5449 581
Computing Services 3594 3818 3609 1399
System Overheads 385 108 335 7
Totals 52697 5253 14235 3293




Sable Usage for Year Ending 17th July 1995

Departmental Group Sessions CPU Usage (hours) Disk Use at 17/7/95 (MB)
quota usage
Chemistry 13188 711 191 81
Physics 12832 1466 230 57
Other Physical Sciences 12113 943 373 102
Mathematics 5269 27 200 58
Biological Sciences 12457 217 344 115
Medical Sciences 25295 1291 685 190
Social Sciences 21853 43 516 111
Humanities 43294 139 983 213
Standard Users 1066955 3265 22771 3589
Other Academic Users 8832 44 93 34
Non-Academic Users 31911 104 606 134
Computing Services 18431 2922 2459 1280
System Overheads 197180 1511 160 384
Totals 1469610 12683 29611 6348




Convex Usage for Year Ending 15th July 1996

Departmental Group Sessions CPU Usage (hrs) Disk Use at 15/7/96 (MB)
interactive batch batch total quota usage
Chemistry 4664 2661 1632 1649 75 30
Physics 1190 1474 1183 1238 36 13
Other Physical Sciences 1229 6239 8418 8458 38 13
Mathematics 0 0 0 0 0 0
Biological Sciences 117 0 0 1 6 3
Medical Sciences 11 2 0 0 2 2
Social Sciences 0 0 0 0 5 0
Humanities 0 0 0 0 0 0
Other Academic Users 358 0 0 1 0 0
Non-Academic Users 0 0 0 0 0 0
Undergraduates 6 0 0 0 2 0
Computing Services 1010 409 277 458 195 132
System Overheads 403 2 0 252 22 9
Totals 8988 10787 11510 12057 381 202








Convex Usage for Year Ending 17th July 1995

Departmental Group Sessions CPU Usage (hrs) Disk Use at 15/7/96 (MB)
interactive batch batch total quota usage
Chemistry 9282 4698 3374 3476 47 30
Physics 2996 1272 1569 1613 30 22
Other Physical Sciences 2782 5902 7281 7274 32 18
Mathematics 36 197 146 147 1 0
Biological Sciences 1037 0 0 3 6 4
Medical Sciences 24 17 0 0 0 0
Social Sciences 87 0 0 0 5 0
Humanities 0 0 0 0 0 0
Other Academic Users 724 0 0 2 0 0
Non-Academic Users 0 0 0 0 0 0
Computing Services 1451 198 76 275 216 140
System Overheads 1285 1 0 287 22 11
Totals 19704 12285 12446 13077 359 225










Notes: Humanities includes the Libraries and Museums.

Other Physical Sciences are Engineering, Materials and Earth Sciences.

Standard Users on Sable & Ermine includes undergraduates, and any postgraduates, staff and senior members who want a basic account, usually for email.

Other Academic Users includes Visiting Academics and members of other British Universities, and undergraduates on Vax and Convex.

Non-Academic Users includes the University Offices, Admissions Office, OUP, NAG and Commercial users.

OUCS Usage on Sable & Ermine has included a large job which ran in the background.

Ermine's 4 processors are each about 3x the power of each of Sable's 4.

Ermine came into operation during June 1996.





8.2 Workload and Availability (See Abbreviationson page 34)

Vax Workload and Availability 1995/6

Workload Availability
4 weeksending Interactive Batch Total DEC Ov'al Prime Shift MTBI No. of

breaks

 MTBI MTTR
Jobs Hrs Jobs Hrs Hrs % % % Hrs Hrs Hrs
14-Aug-95 82660 127 29819 461 588 100.0 100.0 100.0 0.0 0 - -
11-Sep-95 71975 121 30812 666 787 99.5 99.5 98.6 3.1 3 223 1.0
09-Oct-95 78892 116 31864 239 355 99.9 99.9 100.0 0.6 1 671 0.6
06-Nov-95 86060 130 32640 304 434 100.0 100.0 100.0 0.0 0 - -
04-Dec-95 83442 120 30411 242 362 100.0 100.0 100.0 0.0 0 - -
01-Jan-96 55530 78 25385 155 233 100.0 100.0 100.0 0.0 0 - -
29-Jan-96 65773 97 28187 141 238 100.0 100.0 100.0 0.0 0 - -
26-Feb-96 79215 119 33009 206 325 100.0 100.0 100.0 0.0 0 - -
25-Mar-96 75734 114 32714 404 519 100.0 100.0 100.0 0.0 0 - -
22-Apr-96 57410 86 28184 250 336 100.0 100.0 100.0 0.0 0 - -
20-May-96 70757 97 31369 357 454 100.0 100.0 100.0 0.0 0 - -
17-Jun-96 68896 101 32436 646 747 100.0 100.0 100.0 0.0 0 - -
15-Jul-96 62519 82 30043 384 466 100.0 100.0 100.0 0.0 0 - -
Total 938863 1389 396873 4454 5843 100.0 100.0 99.9 3.7 4 2183 0.9
Total (94/5) 1297718 2103 533153 6834 8938 99.6 99.4 98.6 49.4 17 511 2.9
Total (93/4) 1378450 2424 704891 9868 12292 99.6 99.5 98.6 46.2 23 378 1.5








Sable Workload and Availability 1995/6

Workload Availability
4 weeks ending Interactive DEC Ov'al Prime Shift Time lost No. of

breaks

 MTBI MTTR
Jobs Hrs % % % Hrs Hrs Hrs
14-Aug-95 101275 1734 100.0 95.3 90 31.6 3 213 7.2
11-Sep-95 114034 1413 100.0 100.0 100.0 0.0 0 - -
09-Oct-95 156901 1861 100.0 100.0 100.0 0.0 0 - -
06-Nov-95 284207 1527 99.7 99.7 98.8 1.8 3 223 0.6
04-Dec-95 317291 1580 99.8 99.8 99.2 1.2 2 335 0.6
01-Jan-96 154251 1554 99.5 99.5 98.9 3.7 3 223 1.2
29-Jan-96 265726 1920 100.0 99.7 100.0 2.0 0 - -
26-Feb-96 393953 1998 100.0 100.0 100.0 0.3 1 671 0.3
25-Mar-96 270116 2047 100.0 100.0 100.0 0.0 0 - -
22-Apr-96 244628 2033 99.9 99.9 99.7 1.0 3 224 0.3
20-May-96 417198 2220 99.9 99.9 99.6 0.8 1 671 0.8
17-Jun-96 406849 2022 99.9 99.9 99.6 0.8 1 671 0.8
15-Jul-96 191328 1358 99.9 99.9 100.0 0.7 2 336 0.3
Total 3317757 23266 99.9 99.5 98.9 43.7 19 457 2.2
Sable (94/5) 1469611 12684 99.1 98.8 98.3 87.6 101 72 0.9
Black (93/4) 312878 5362 99.5 99.5 99.2 45.1 25 348 1.5




Ermine Workload and Availability 1995/6

Workload Availability
4 weeks ending Interactive DEC Ov'al Prime Shift Time lost No. of

breaks

 MTBI MTTR
Jobs Hrs % % % Hrs Hrs Hrs
17-Jun-96 5014 2604 100.0 100.0 100.0 0.0 0 - -
15-Jul-96 47683 2655 100.0 100.0 100.0 0.0 0 - -
Total 52697 5258 100.0 100.0 100.0 0.0 0 - -




Convex Workload and Availability 1995/6

Workload Availability
4 weeksending Interactive Batch Total DEC Ov'al Prime Shift Time lost No. of

breaks

 MTBI MTTR
Jobs Hrs Jobs Hrs Hrs % % % Hrs Hrs Hrs
14-Aug-95 1133 357 893 905 940 100.0 100.0 100.0 0.0 0 - -
11-Sep-95 772 32 989 867 899 99.8 99.8 99.2 1.3 1 671 1.3
09-Oct-95 960 24 819 855 878 100.0 100.0 100.0 0.0 0 - -
06-Nov-95 800 33 980 875 908 100.0 100.0 100.0 0.0 0 - -
04-Dec-95 702 24 1008 865 890 100.0 100.0 100.0 0.0 0 - -
01-Jan-96 465 20 895 835 854 98.3 98.3 95.0 11.4 1 661 11.4
29-Jan-96 649 22 771 897 919 100.0 100.0 100.0 0.0 0 - -
26-Feb-96 570 23 635 843 866 92.6 92.6 100.0 49.5 1 622 49.5
25-Mar-96 716 46 854 997 1043 100.0 100.0 100.0 0.0 0 - -
22-Apr-96 628 27 584 595 621 100.0 100.0 100.0 0.0 0 - -
20-May-96 661 124 746 810 934 100.0 100.0 100.0 0.0 0 - -
17-Jun-96 525 56 724 979 1035 98.8 98.8 100.0 8.1 1 664 8.1
15-Jul-96 347 99 720 958 1057 100.0 100.0 100.0 0.0 0 - -
Total 8928 564 10618 11280 11844 99.2 99.2 99.6 70.3 4 2166 17.6
Total (94/5) 19704 726 12287 12447 13173 99.5 99.1 98.9 75.7 12 722 6.3
Total (93/4) 21501 701 33530 14875 15577 99.8 99.7 99.3 26.7 8 1089 2.7




HFS Workload and Availability 1995/6

Workload Availability
4 weeks ending Backup Restore IBM Ov'al Prime Shift Time lost No. of breaks MTBI MTTR
Files MB Files MB % % % Hrs Hrs Hrs
22-Apr-96 1259563 174917 64551 2338 99.7 98.5 94.9 10.1 4 165 0.5
20-May-96 2613364 255568 162439 2558 93.0 91.5 92.2 57.3 7 88 6.6
17-Jun-96 2955360 351603 30573 2355 99.9 99.9 99.6 0.9 3 224 0.3
15-Jul-96 2549902 284092 177102 9749 98.0 98.0 91.4 13.8 5 132 2.8
Total 9378189 1066181 434665 17002 97.7 97.0 94.5 82.1 19 137 3.3














Notes and Abbreviations:

MBTI = Mean Time Between Interruptions to users' service, from whatever cause.

MTTR= Mean Time To Restore service to users.

Availability: "DEC"/ "Convex"/ "IBM" indicates the % lack of availability of service to users where DEC, Convex or IBM (as system maintenance/software contractors) are responsible for restoring service.

"Ov'al" indicates % availability to users overall (regardless of cause of unavailability).

"Prime Shift" indicates lack of availability from any cause during the weekday hours 8am to 6pm.