MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 10/01/99 through 10/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,906 17,405 26,311
Davis 15,582 1,910 17,492
Irvine 6,575 0 6,575
Los Angeles 2,730 9,870 12,600
Riverside 4,421 1,419 5,840
San Diego 3,008 1,722 4,730
San Francisco 2,510 46 2,556
Santa Barbara 4,755 2,555 7,310
Santa Cruz 4,702 3,239 7,941
LBL 0 579 579
LLL 0 622 622
Other - UC 350 1,570 1,920
CSL 0 836 836
CSU n/a 1,615 1,615
Other-Network UC n/a 28,506 28,506
_______ ______ _____
53,539 71,894 125,433
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2,063 10,857 65,869
2-4 a.m. 1,313 6,756 47,331
4-6 a.m. 1,257 4,635 35,668
6-8 a.m. 2,728 8,843 72,616
8-10 a.m. 12,880 44,402 338,342
10-12 a.m. 22,364 75,004 599,056
12-2 p.m. 23,496 79,009 583,588
2-4 p.m. 26,944 86,647 673,381
4-6 p.m. 17,860 58,088 483,740
6-8 p.m. 6,848 24,879 183,728
8-10 p.m. 4,687 15,671 117,242
10-12 p.m. 2,993 12,623 77,851
__________ __________ __________ _________________
Total: 125,433 427,414 3,278,412
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25,268 53,797 79,065
Davis 50,441 7,816 58,257
Irvine 17,024 0 17,024
Los Angeles 9,290 29,088 38,378
Riverside 15,363 2,609 17,972
San Diego 8,164 3,794 11,958
San Francisco 4,474 57 4,531
Santa Barbara 17,260 6,024 23,284
Santa Cruz 11,876 17,318 29,194
LBL 0 1,015 1,015
LLL 0 1,520 1,520
Other - UC 527 13,605 14,132
CSL 0 2,956 2,956
CSU n/a 6,115 6,115
Other-Network UC n/a 122,013 122,013
_______ ______ _____
159,687 267,727 427,414
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 205,916 466,973 672,889
Davis 334,029 38,783 372,812
Irvine 149,600 0 149,600
Los Angeles 74,491 319,389 393,880
Riverside 113,835 36,356 150,191
San Diego 52,835 36,594 89,429
San Francisco 33,507 894 34,401
Santa Barbara 149,988 59,465 209,453
Santa Cruz 79,161 86,264 165,425
LBL 0 10,079 10,079
LLL 0 11,430 11,430
Other - UC 2,758 41,369 44,127
CSL 0 11,944 11,944
CSU n/a 61,283 61,283
Other-Network UC n/a 901,469 901,469
_______ ______ _____
1,196,120 2,082,292 3,278,412
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 4.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 974:51
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 98.9
Retrievals per search - standard deviation 2179.2
Percent of searches completed with 0 results 28.3%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 55.8%
Commands entered, by type, excluding errors:
Total Percentage
FIND 412,889 36.1%
DISPLAY (excluding automatic displays) 338,267 29.6%
ACFIND 152 0.0%
BROWSE 3,230 0.3%
SELECT 2,214 0.2%
HELP 20,043 1.8%
EXPLAIN 17,731 1.6%
SET/RESET 23,916 2.1%
SHOW 4,471 0.4%
AT 19,613 1.7%
ADD ON (AND, OR, AND NOT) 14,225 1.2%
LOGON or LOGOFF 207,511 18.2%
COMMENT 22 0.0%
SAVE 9,987 0.9%
USE 10,045 0.9%
OTHER 57,826 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 62,512 14.6% 14,644 23.4% 12 178.8 4368.9
AUTHOR 22,245 5.2% 5,482 24.6% 15 144.4 665.5
CORPORATE AUTH 3,953 0.9% 1,553 39.3% 29 557.8 2464.1
EXACT CA 140 0.0% 65 46.4% 207 633.0 863.2
TITLE WORD 114,113 26.6% 33,624 29.5% 4 57.3 1060.6
EXACT TITLE 53,121 12.4% 16,960 31.9% 2 27.4 174.0
TITLE -> TW 10,411 2.4% 2,649 25.4% 11 70.5 413.7
TITLE -> XT 11,785 2.8% 5,496 46.6% 1 13.2 105.2
SUBJECT 37,537 8.8% 15,256 40.6% 51 475.5 3634.6
EXACT SUBJECT 1,720 0.4% 591 34.4% 75 648.1 3192.4
PERIODICAL 65,282 15.2% 14,102 21.6% 5 112.1 1233.3
EXACT PE 20,453 4.8% 3,269 16.0% 3 35.9 416.0
RPE 55 0.0% 28 50.9% 5 38.7 68.8
XRP 12 0.0% 4 33.3% 10 36.5 71.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1,032 0.2% 224 21.7% 40 794.4 7792.3
DATE 6,310 1.5% 1,501 23.8% 4 225.6 2099.6
FORM 4,271 1.0% 976 22.9% 16 532.8 3678.8
NUMBER* 303 0.1% 140 46.2% 2 123.2 1252.1
MUSIC* 116 0.0% 66 56.9% 13 546.0 1476.5
SERIES 6,983 1.6% 2,531 36.2% 4 78.9 481.4
UNIFORM TITLE 212 0.0% 75 35.4% 18 227.3 772.2
Other indexes 5,719 1.3% 2,460 43.0% 1 73.8 971.6
* 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 22,843 5.7% 6,346 27.8% 3 84.8 838.4
Single 380,881 94.3% 108,565 28.5% 6 138.0 2360.2
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 360 12.0% 58 16.1% 4 30.1 90.1
CORPORATE AUTH 34 1.1% 11 32.4% 4 93.3 167.0
EXACT CA 3 0.1% 2 66.7% 14 14.0 0.0
SUBJECT 2,358 78.5% 577 24.5% 37 169.9 630.5
EXACT SUBJECT 199 6.6% 51 25.6% 34 227.1 839.7
UNIFORM TITLE 14 0.5% 8 57.1% 42 152.3 282.0
SERIES 36 1.2% 5 13.9% 10 30.5 46.0
By number of indexes:
Multiple 1 0.0% 0 0.0% 5,047 5047.0 0.0
Single 3,057 100% 715 23.4% 25 145.6 575.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.6%
BRIEF 74.3%
LONG 8.9%
MARC 3.5%
FIELDS 2.3%
TAG 1.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. First word of command is invalid 29.5%
2. NS command - no next screen 25.1%
3. FIND command with invalid index name 13.9%
4. KW search in database w/o KW index 3.3%
5. DISPLAY command contains invalid word 3.3%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 2.0%
8. Valid command at an inappropriate time 1.9%
9. DISPLAY command - no FIND results 1.5%
10. Index invalid in current database 1.4%
11. All others 15.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.3%
2. FIND 13.8%
3. INDEXES 7.3%
4. COMMAND WORDS 6.5%
5. Unrecognized term 5.2%
6. PASSWORDS 2.7%
7. DISPLAY 2.6%
8. DATABASES 2.3%
9. SRLF 1.9%
10. CATALOG 1.9%
11. All others 28.5%
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 11.8%
4. DISPLAY command - middle of >1 screen 4.4%
5. FIND command retrieves >1 book 3.4%
6. NS command - no next screen 2.8%
7. DISPLAY command-first of >1 screen 2.7%
8. 3 HELP commands issued from same code 2.5%
9. KW search in database w/o KW index 2.4%
10. DISPLAY command-complete in one screen 2.2%
11. All others 32.4%
Ten most frequent SHOW requests:
1. HISTORY 25.5%
2. SEARCH 14.3%
3. GLOSSARY 9.2%
4. TIME 8.9%
5. NEWS 5.2%
6. SETTINGS 3.5%
7. MAIL STATUS 3.5%
8. STATISTICS 3.3%
9. SYSTEM3 NEWS 3.1%
10. BOOK STATISTICS 2.4%
11. All others 21.2%