MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,906 15,610 22,516
Davis 13,232 2,062 15,294
Irvine 5,960 0 5,960
Los Angeles 1,845 4,488 6,333
Riverside 3,491 1,263 4,754
San Diego 2,736 2,028 4,764
San Francisco 2,442 39 2,481
Santa Barbara 3,619 2,206 5,825
Santa Cruz 2,121 2,960 5,081
LBL 0 540 540
LLL 0 634 634
Other - UC 445 933 1,378
CSL 0 989 989
CSU n/a 1,083 1,083
Other-Network UC n/a 28,387 28,387
_______ ______ _____
42,797 63,222 106,019
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,820 10,332 81,043
2-4 a.m. 1,232 5,607 35,965
4-6 a.m. 1,139 3,807 28,780
6-8 a.m. 2,732 8,130 65,485
8-10 a.m. 12,394 38,305 289,845
10-12 a.m. 20,611 66,642 503,929
12-2 p.m. 19,884 61,836 471,704
2-4 p.m. 22,754 71,582 538,048
4-6 p.m. 14,148 42,148 323,324
6-8 p.m. 4,267 11,826 101,948
8-10 p.m. 2,708 7,825 63,450
10-12 p.m. 2,331 9,702 77,804
__________ __________ __________ _________________
Total: 106,020 337,742 2,581,325
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 21,889 45,723 67,612
Davis 41,402 8,307 49,709
Irvine 16,103 0 16,103
Los Angeles 3,383 8,091 11,474
Riverside 12,831 2,721 15,552
San Diego 9,516 4,808 14,324
San Francisco 3,356 30 3,386
Santa Barbara 12,136 5,795 17,931
Santa Cruz 4,820 10,628 15,448
LBL 0 1,014 1,014
LLL 0 1,380 1,380
Other - UC 266 3,584 3,850
CSL 0 3,823 3,823
CSU n/a 3,863 3,863
Other-Network UC n/a 112,273 112,273
_______ ______ _____
125,702 212,040 337,742
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 168,937 385,117 554,054
Davis 279,536 41,265 320,801
Irvine 118,828 0 118,828
Los Angeles 25,904 70,726 96,630
Riverside 96,785 26,186 122,971
San Diego 46,639 37,321 83,960
San Francisco 25,760 354 26,114
Santa Barbara 103,194 49,761 152,955
Santa Cruz 32,869 80,452 113,321
LBL 0 8,942 8,942
LLL 0 11,477 11,477
Other - UC 1,671 28,273 29,944
CSL 0 13,468 13,468
CSU n/a 38,559 38,559
Other-Network UC n/a 889,301 889,301
_______ ______ _____
900,123 1,681,202 2,581,325
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 4.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1306
Average number of searches completed per session 3.1
Retrievals per search - median 2.0
Retrievals per search - average 71.9
Retrievals per search - standard deviation 940.3
Percent of searches completed with 0 results 29.3%
Percent of searches entered that are long 4.3%
Percent of long searches completed
(includes partial results) 53.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 326,987 35.3%
DISPLAY (excluding automatic displays) 280,853 30.3%
ACFIND 63 0.0%
BROWSE 2,221 0.2%
SELECT 1,354 0.1%
HELP 11,170 1.2%
EXPLAIN 10,947 1.2%
SET/RESET 20,256 2.2%
SHOW 3,369 0.4%
AT 16,851 1.8%
ADD ON (AND, OR, AND NOT) 10,587 1.1%
LOGON or LOGOFF 173,213 18.7%
COMMENT 52 0.0%
SAVE 8,652 0.9%
USE 12,464 1.3%
OTHER 47,451 5.1%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 51,321 15.1% 12,577 24.5% 12 95.0 537.5
AUTHOR 17,466 5.1% 4,366 25.0% 14 128.4 1314.8
CORPORATE AUTH 3,626 1.1% 1,345 37.1% 21 545.2 3662.9
EXACT CA 98 0.0% 57 58.2% 30 2187.0 12551.6
TITLE WORD 86,536 25.4% 27,442 31.7% 4 51.0 808.9
EXACT TITLE 40,953 12.0% 14,975 36.6% 2 26.6 311.3
TITLE -> TW 8,498 2.5% 2,133 25.1% 9 67.0 488.7
TITLE -> XT 8,845 2.6% 4,081 46.1% 2 14.4 138.7
SUBJECT 21,508 6.3% 8,129 37.8% 46 408.9 1773.9
EXACT SUBJECT 1,033 0.3% 321 31.1% 76 530.4 1654.4
PERIODICAL 60,112 17.7% 13,647 22.7% 5 96.1 1071.9
EXACT PE 16,695 4.9% 2,740 16.4% 3 27.1 271.0
RPE 32 0.0% 18 56.3% 4 46.0 86.2
XRP 26 0.0% 2 7.7% 6 79.3 284.3
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 399 0.1% 71 17.8% 54 853.3 5461.0
DATE 7,788 2.3% 1,902 24.4% 2 52.1 341.8
FORM 3,028 0.9% 719 23.7% 8 429.0 4837.4
NUMBER* 538 0.2% 146 27.1% 1 182.5 1471.6
MUSIC* 156 0.0% 89 57.1% 5 319.1 1286.8
SERIES 7,347 2.2% 3,071 41.8% 5 107.9 1429.1
UNIFORM TITLE 96 0.0% 46 47.9% 100 1178.6 1451.0
Other indexes 4,301 1.3% 2,119 49.3% 1 105.0 1125.8
* Number indexes include REPORT NUMBER STOCK NUMBER,
GOVERNMENT DOCUMENTS, and GPO ITEM NUMBER;
Music indexes include MUSICAL KEY, MUSIC PUBLISHER, and THEMATIC
By number of indexes:
Multiple 19,654 6.1% 5,615 28.6% 3 56.2 506.9
Single 300,593 93.9% 88,632 29.5% 6 105.7 1158.7
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTH 215 10.5% 38 17.7% 6 63.8 293.1
CORPORATE AUTH 30 1.5% 10 33.3% 46 235.6 664.4
EXACT CA 2 0.1% 1 50.0% 111 111.0 0.0
SUBJECT 1,660 81.3% 376 22.6% 43 141.4 332.8
EXACT SUBJECT 89 4.4% 17 19.1% 36 187.9 353.4
UNIFORM TITLE 36 1.8% 28 77.8% 27 85.4 127.5
SERIES 9 0.4% 1 11.1% 18 47.9 54.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 2,116 100% 480 22.7% 31 130.9 328.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.5%
BRIEF 70.4%
LONG 10.6%
MARC 4.0%
FIELDS 2.6%
TAG 1.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.5%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 28.4%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 12.3%
4. DISPLAY command contains invalid word 3.4%
5. KW search in database w/o KW index 2.8%
6. Search term missing from search command 2.4%
7. PS command - no previous screen 1.8%
8. Valid command at an inappropriate time 1.6%
9. DISPLAY command - no FIND results 1.5%
10. 1243 1.4%
11. All others 16.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.7%
2. FIND 14.9%
3. INDEXES 7.2%
4. COMMAND WORDS 6.2%
5. Unrecognized term 5.4%
6. PASSWORDS 3.4%
7. DISPLAY 2.7%
8. DATABASES 2.5%
9. LOCATE (PE DB) 2.3%
10. NRLF 1.6%
11. All others 32.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 20.6%
2. First word of command is invalid 14.0%
3. FIND command with invalid index name 11.1%
4. DISPLAY command - middle of >1 screen 3.8%
5. NS command - no next screen 3.2%
6. FIND command retrieves >1 book 2.7%
7. TW search with zero results 2.5%
8. DISPLAY command-complete in one screen 2.4%
9. DISPLAY command-first of >1 screen 2.4%
10. F/BR with index invalid in current DB 2.3%
11. All others 35.1%
Ten most frequent SHOW requests:
1. HISTORY 25.1%
2. SEARCH 11.0%
3. GLOSSARY 7.6%
4. TIME 6.9%
5. SYSTEM NEWS 5.1%
6. SYSTEM3 NEWS 4.7%
7. NEWS 4.6%
8. SETTINGS 3.7%
9. SYSTEM1 NEWS 3.1%
10. MAIL STATUS 2.6%
11. All others 25.6%