MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 06/01/99 through 06/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,803 15,202 21,005
Davis 17,624 2,374 19,998
Irvine 7,295 0 7,295
Los Angeles 2,536 5,814 8,350
Riverside 5,165 1,408 6,573
San Diego 2,577 2,712 5,289
San Francisco 2,903 50 2,953
Santa Barbara 5,720 2,607 8,327
Santa Cruz 2,975 3,243 6,218
LBL 0 740 740
LLL 0 689 689
Other - UC 332 1,060 1,392
CSL 0 827 827
CSU n/a 1,259 1,259
Other-Network UC n/a 29,534 29,534
_______ ______ _____
52,930 67,519 120,449
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2,332 12,713 78,704
2-4 a.m. 1,738 11,658 62,959
4-6 a.m. 1,311 5,958 38,352
6-8 a.m. 2,876 9,842 80,409
8-10 a.m. 13,174 43,260 321,228
10-12 a.m. 22,495 72,051 539,886
12-2 p.m. 22,079 68,082 514,428
2-4 p.m. 25,495 78,474 571,905
4-6 p.m. 15,679 47,839 354,901
6-8 p.m. 5,710 15,237 122,861
8-10 p.m. 4,189 11,680 92,034
10-12 p.m. 3,372 11,990 90,187
__________ __________ __________ _________________
Total: 120,450 388,784 2,867,854
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 22,066 44,817 66,883
Davis 57,599 9,492 67,091
Irvine 18,881 0 18,881
Los Angeles 4,153 10,979 15,132
Riverside 15,738 3,116 18,854
San Diego 7,651 5,348 12,999
San Francisco 4,877 38 4,915
Santa Barbara 19,046 6,259 25,305
Santa Cruz 6,216 9,855 16,071
LBL 0 1,236 1,236
LLL 0 1,756 1,756
Other - UC 157 3,936 4,093
CSL 0 1,947 1,947
CSU n/a 5,181 5,181
Other-Network UC n/a 128,440 128,440
_______ ______ _____
156,384 232,400 388,784
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 160,361 349,799 510,160
Davis 401,872 47,901 449,773
Irvine 133,802 0 133,802
Los Angeles 33,228 104,424 137,652
Riverside 117,113 29,033 146,146
San Diego 41,616 46,535 88,151
San Francisco 30,179 116 30,295
Santa Barbara 175,756 58,645 234,401
Santa Cruz 36,247 67,835 104,082
LBL 0 11,949 11,949
LLL 0 12,888 12,888
Other - UC 774 35,274 36,048
CSL 0 15,846 15,846
CSU n/a 46,023 46,023
Other-Network UC n/a 910,638 910,638
_______ ______ _____
1,130,948 1,736,906 2,867,854
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.3
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1166
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 85.9
Retrievals per search - standard deviation 1573.4
Percent of searches completed with 0 results 30.0%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 54.3%
Commands entered, by type, excluding errors:
Total Percentage
FIND 376,827 35.3%
DISPLAY (excluding automatic displays) 323,674 30.3%
ACFIND 94 0.0%
BROWSE 1,648 0.2%
SELECT 1,167 0.1%
HELP 14,090 1.3%
EXPLAIN 12,989 1.2%
SET/RESET 21,275 2.0%
SHOW 3,895 0.4%
AT 17,582 1.6%
ADD ON (AND, OR, AND NOT) 11,787 1.1%
LOGON or LOGOFF 199,538 18.7%
COMMENT 1,940 0.2%
SAVE 10,362 1.0%
USE 14,456 1.4%
OTHER 55,564 5.2%
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 59,133 15.1% 14,874 25.2% 11 94.4 485.6
AUTHOR 21,306 5.5% 5,269 24.7% 15 138.7 611.9
CORPORATE AUTH 3,877 1.0% 1,436 37.0% 22 692.9 4166.5
EXACT CA 96 0.0% 47 49.0% 19 265.0 492.0
TITLE WORD 102,069 26.1% 32,905 32.2% 5 48.3 435.5
EXACT TITLE 45,992 11.8% 15,787 34.3% 2 30.3 244.2
TITLE -> TW 9,705 2.5% 2,512 25.9% 8 64.3 437.8
TITLE -> XT 10,199 2.6% 4,800 47.1% 1 14.5 129.4
SUBJECT 32,742 8.4% 13,594 41.5% 50 509.1 4481.7
EXACT SUBJECT 1,800 0.5% 655 36.4% 80 591.5 2297.7
PERIODICAL 61,415 15.7% 14,692 23.9% 5 121.1 1431.4
EXACT PE 19,678 5.0% 3,286 16.7% 3 36.1 619.4
RPE 22 0.0% 13 59.1% 2 204.1 510.7
XRP 5 0.0% 1 20.0% 10 183.8 353.6
COMMENTS 58 0.0% 21 36.2% 122 1811.8 2003.4
LANGUAGE 766 0.2% 152 19.8% 40 984.4 10765.2
DATE 5,704 1.5% 1,330 23.3% 2 55.0 472.5
FORM 3,171 0.8% 839 26.5% 13 288.6 3053.5
NUMBER* 543 0.1% 321 59.1% 2 26.1 132.1
MUSIC* 109 0.0% 63 57.8% 9 166.2 563.5
SERIES 6,448 1.7% 2,292 35.5% 5 151.7 3137.7
UNIFORM TITLE 138 0.0% 67 48.5% 118 844.3 1221.8
Other indexes 5,445 1.4% 2,441 44.8% 1 27.0 455.1
* 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 20,635 5.6% 6,237 30.2% 3 55.2 396.3
Single 348,281 94.4% 104,702 30.1% 6 124.7 1700.5
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 276 18.5% 43 15.6% 4 30.1 87.2
CORPORATE AUTH 31 2.1% 8 25.8% 16 80.5 152.7
EXACT CA 11 0.7% 6 54.5% 200 150.4 81.2
SUBJECT 1,071 71.8% 267 24.9% 50 159.6 390.7
EXACT SUBJECT 86 5.8% 20 23.3% 84 163.7 233.7
UNIFORM TITLE 10 0.7% 2 20.0% 200 300.1 256.3
SERIES 7 0.5% 2 28.6% 3 9.0 14.1
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,556 100% 357 22.9% 25 128.0 333.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.0%
BRIEF 70.4%
LONG 10.6%
MARC 5.0%
FIELDS 2.3%
TAG 1.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. First word of command is invalid 28.8%
2. NS command - no next screen 27.2%
3. FIND command with invalid index name 12.9%
4. KW search in database w/o KW index 3.9%
5. DISPLAY command contains invalid word 3.5%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 1.8%
8. Valid command at an inappropriate time 1.8%
9. DISPLAY command - no FIND results 1.6%
10. Command contains escape or arrow key 1.4%
11. All others 14.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.8%
2. FIND 14.4%
3. INDEXES 7.0%
4. COMMAND WORDS 6.6%
5. Unrecognized term 5.6%
6. PASSWORDS 3.2%
7. DATABASES 2.8%
8. DISPLAY 2.8%
9. ADD-ON SEARCH 2.0%
10. LOCATE (PE DB) 1.8%
11. All others 29.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 20.5%
2. First word of command is invalid 14.9%
3. FIND command with invalid index name 11.0%
4. DISPLAY command - middle of >1 screen 4.2%
5. FIND command retrieves >1 book 3.2%
6. KW search in database w/o KW index 3.0%
7. NS command - no next screen 2.7%
8. DISPLAY command-first of >1 screen 2.5%
9. TW search with zero results 2.5%
10. DISPLAY command-complete in one screen 2.4%
11. All others 33.1%
Ten most frequent SHOW requests:
1. HISTORY 23.8%
2. TIME 20.4%
3. SEARCH 12.3%
4. GLOSSARY 8.9%
5. NEWS 4.5%
6. SETTINGS 3.6%
7. MAIL STATUS 2.1%
8. DATABASE NEWS 1.6%
9. PSYCINFO NEWS 1.2%
10. USE SYSTEMS 1.2%
11. All others 20.3%