MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 04/01/99 through 04/30/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,602 22,611 39,213
Davis 21,298 2,096 23,394
Irvine 9,280 0 9,280
Los Angeles 2,774 7,545 10,319
Riverside 6,752 2,028 8,780
San Diego 2,920 4,506 7,426
San Francisco 3,372 78 3,450
Santa Barbara 6,831 3,053 9,884
Santa Cruz 5,202 4,134 9,336
LBL 0 715 715
LLL 0 750 750
Other - UC 445 2,118 2,563
CSL 0 1,006 1,006
CSU n/a 2,028 2,028
Other-Network UC n/a 39,477 39,477
_______ ______ _____
75,476 92,145 167,621
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2,672 12,337 74,123
2-4 a.m. 1,636 9,621 57,250
4-6 a.m. 1,442 5,137 37,223
6-8 a.m. 3,070 8,467 70,344
8-10 a.m. 15,631 55,713 358,799
10-12 a.m. 28,661 103,600 676,497
12-2 p.m. 30,012 111,376 687,388
2-4 p.m. 34,826 125,894 788,776
4-6 p.m. 24,676 86,641 516,718
6-8 p.m. 12,972 36,205 203,659
8-10 p.m. 7,594 26,838 162,452
10-12 p.m. 4,430 20,726 115,160
__________ __________ __________ _________________
Total: 167,622 602,555 3,748,389
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 50,776 63,834 114,610
Davis 69,958 6,656 76,614
Irvine 22,850 0 22,850
Los Angeles 4,784 14,029 18,813
Riverside 21,447 4,111 25,558
San Diego 7,660 7,493 15,153
San Francisco 5,880 43 5,923
Santa Barbara 22,233 6,539 28,772
Santa Cruz 13,834 16,342 30,176
LBL 0 1,191 1,191
LLL 0 1,864 1,864
Other - UC 342 5,353 5,695
CSL 0 2,114 2,114
CSU n/a 8,001 8,001
Other-Network UC n/a 245,221 245,221
_______ ______ _____
219,764 382,791 602,555
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 394,106 546,700 940,806
Davis 442,941 34,834 477,775
Irvine 174,310 0 174,310
Los Angeles 35,326 125,687 161,013
Riverside 157,663 36,978 194,641
San Diego 45,119 61,010 106,129
San Francisco 44,594 589 45,183
Santa Barbara 182,492 64,087 246,579
Santa Cruz 90,892 112,251 203,143
LBL 0 13,502 13,502
LLL 0 16,534 16,534
Other - UC 2,333 55,690 58,023
CSL 0 12,080 12,080
CSU n/a 78,202 78,202
Other-Network UC n/a 1,020,469 1,020,469
_______ ______ _____
1,569,776 2,178,613 3,748,389
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 3.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.2
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1090
Average number of searches completed per session 3.5
Retrievals per search - median 1.0
Retrievals per search - average 77.3
Retrievals per search - standard deviation 1484.8
Percent of searches completed with 0 results 41.7%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 52.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 586,183 38.1%
DISPLAY (excluding automatic displays) 443,421 28.8%
ACFIND 87 0.0%
BROWSE 3,560 0.2%
SELECT 2,143 0.1%
HELP 23,491 1.5%
EXPLAIN 19,205 1.2%
SET/RESET 33,816 2.2%
SHOW 5,348 0.3%
AT 25,255 1.6%
ADD ON (AND, OR, AND NOT) 16,206 1.1%
LOGON or LOGOFF 265,143 17.2%
COMMENT 1,095 0.1%
SAVE 12,991 0.8%
USE 20,062 1.3%
OTHER 79,201 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 71,427 11.9% 17,765 24.9% 12 104.2 550.7
AUTHOR 28,617 4.8% 7,067 24.7% 14 131.4 510.9
CORPORATE AUTH 6,191 1.0% 2,310 37.3% 11 720.3 7542.3
EXACT CA 163 0.0% 72 44.2% 29 466.7 1097.2
TITLE WORD 124,550 20.7% 40,772 32.7% 6 56.4 586.3
EXACT TITLE 60,139 10.0% 21,790 36.2% 2 30.7 271.4
TITLE -> TW 11,690 1.9% 2,875 24.6% 10 80.5 1440.2
TITLE -> XT 13,977 2.3% 6,193 44.3% 1 12.9 189.6
SUBJECT 53,327 8.9% 22,212 41.7% 53 483.6 4607.3
EXACT SUBJECT 2,396 0.4% 880 36.7% 73 416.4 1070.5
PERIODICAL 70,001 11.7% 18,013 25.7% 5 135.9 1481.0
EXACT PE 26,445 4.4% 5,413 20.5% 3 35.7 675.5
RPE 32 0.0% 19 59.4% 5 47.5 99.4
XRP 5 0.0% 2 40.0% 3 3.7 2.1
COMMENTS 117 0.0% 46 39.3% 30 1612.2 1953.4
LANGUAGE 1,559 0.3% 307 19.7% 47 791.1 8052.4
DATE 5,609 0.9% 1,402 25.0% 6 115.3 1478.7
FORM 4,931 0.8% 1,162 23.6% 17 716.1 6270.3
NUMBER* 560 0.1% 247 44.1% 2 126.5 678.1
MUSIC* 199 0.0% 117 58.8% 16 534.7 2254.1
SERIES 9,492 1.6% 4,383 46.2% 5 93.8 902.8
UNIFORM TITLE 142 0.0% 81 57.0% 18 201.5 532.9
Other indexes 108,925 18.1% 96,498 88.6% 1 15.6 227.2
* 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 24,249 4.2% 7,404 30.5% 4 125.3 1579.4
Single 550,649 95.8% 234,465 42.6% 6 133.9 1986.5
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 494 15.3% 150 30.4% 5 37.7 192.0
CORPORATE AUTH 34 1.1% 10 29.4% 10 26.3 35.1
EXACT CA 1 0.0% 1 100% 0 0.0 0.0
SUBJECT 2,563 79.2% 733 28.6% 38 154.6 871.1
EXACT SUBJECT 130 4.0% 49 37.7% 115 212.0 379.2
UNIFORM TITLE 3 0.1% 2 66.7% 204 204.0 0.0
SERIES 10 0.3% 1 10.0% 16 68.0 113.1
By number of indexes:
Multiple 1 0.0% 1 100% 0 0.0 0.0
Single 3,350 100% 966 28.8% 26 134.2 772.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 7.5%
BRIEF 75.6%
LONG 8.3%
MARC 3.3%
FIELDS 3.1%
TAG 1.1%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.1%
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 29.9%
2. NS command - no next screen 24.8%
3. FIND command with invalid index name 12.9%
4. KW search in database w/o KW index 4.2%
5. DISPLAY command contains invalid word 3.0%
6. Search term missing from search command 2.5%
7. Valid command at an inappropriate time 1.9%
8. PS command - no previous screen 1.9%
9. DISPLAY command - no FIND results 1.6%
10. Index invalid in current database 1.4%
11. All others 16.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.6%
2. FIND 14.0%
3. INDEXES 7.3%
4. COMMAND WORDS 7.2%
5. Unrecognized term 5.3%
6. PASSWORDS 3.3%
7. DISPLAY 2.7%
8. DATABASES 2.5%
9. LOCATE (PE DB) 2.0%
10. ADD-ON SEARCH 2.0%
11. All others 29.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 18.8%
2. First word of command is invalid 15.3%
3. FIND command with invalid index name 11.1%
4. DISPLAY command - middle of >1 screen 4.5%
5. KW search in database w/o KW index 3.3%
6. NS command - no next screen 3.0%
7. FIND command retrieves >1 book 3.0%
8. DISPLAY command-first of >1 screen 2.6%
9. DISPLAY command-complete in one screen 2.3%
10. TW search with zero results 2.3%
11. All others 33.8%
Ten most frequent SHOW requests:
1. HISTORY 23.7%
2. SEARCH 14.8%
3. NEWS 13.4%
4. GLOSSARY 9.4%
5. TIME 6.9%
6. SETTINGS 4.0%
7. MAIL STATUS 2.6%
8. PSYCINFO NEWS 1.8%
9. SYSTEM NEWS 1.3%
10. MAIL SETTINGS 1.3%
11. All others 20.9%