MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,594 11,914 17,508
Davis 13,361 1,993 15,354
Irvine 5,967 0 5,967
Los Angeles 2,009 4,752 6,761
Riverside 3,114 933 4,047
San Diego 2,428 1,640 4,068
San Francisco 2,357 35 2,392
Santa Barbara 4,028 2,048 6,076
Santa Cruz 2,163 2,768 4,931
LBL 0 584 584
LLL 0 588 588
Other - UC 313 786 1,099
CSL 0 835 835
CSU n/a 911 911
Other-Network UC n/a 27,113 27,113
_______ ______ _____
41,334 56,900 98,234
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1,763 9,605 64,827
2-4 a.m. 1,371 8,340 54,948
4-6 a.m. 1,106 5,099 41,946
6-8 a.m. 2,700 9,140 82,827
8-10 a.m. 11,429 38,186 282,580
10-12 a.m. 18,777 62,183 473,202
12-2 p.m. 17,767 57,198 437,949
2-4 p.m. 21,265 66,794 512,812
4-6 p.m. 13,275 41,408 324,236
6-8 p.m. 4,151 14,229 100,491
8-10 p.m. 2,438 7,618 63,751
10-12 p.m. 2,192 9,874 80,355
__________ __________ __________ _________________
Total: 98,234 329,674 2,519,924
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 17,979 35,106 53,085
Davis 42,579 7,589 50,168
Irvine 16,208 0 16,208
Los Angeles 3,976 9,287 13,263
Riverside 10,283 2,367 12,650
San Diego 8,894 3,171 12,065
San Francisco 3,310 60 3,370
Santa Barbara 12,679 5,319 17,998
Santa Cruz 5,224 11,827 17,051
LBL 0 935 935
LLL 0 1,438 1,438
Other - UC 192 2,158 2,350
CSL 0 3,039 3,039
CSU n/a 3,627 3,627
Other-Network UC n/a 122,427 122,427
_______ ______ _____
121,324 208,350 329,674
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 144,274 311,879 456,153
Davis 293,080 38,724 331,804
Irvine 125,259 0 125,259
Los Angeles 31,508 81,084 112,592
Riverside 82,311 22,882 105,193
San Diego 42,620 31,622 74,242
San Francisco 22,781 633 23,414
Santa Barbara 110,349 49,888 160,237
Santa Cruz 32,198 68,855 101,053
LBL 0 10,758 10,758
LLL 0 11,101 11,101
Other - UC 1,689 17,782 19,471
CSL 0 14,626 14,626
CSU n/a 39,418 39,418
Other-Network UC n/a 934,603 934,603
_______ ______ _____
886,069 1,633,855 2,519,924
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 3.7
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.8
2.0 COMMAND mode statistics:
____________________________
Longest session recorded (minutes:seconds) 1220
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 81.4
Retrievals per search - standard deviation 1947.6
Percent of searches completed with 0 results 29.9%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 56.1%
Commands entered, by type, excluding errors:
Total Percentage
FIND 319,440 35.1%
DISPLAY (excluding automatic displays) 294,612 32.4%
ACFIND 79 0.0%
BROWSE 1,491 0.2%
SELECT 1,021 0.1%
HELP 10,299 1.1%
EXPLAIN 9,667 1.1%
SET/RESET 18,818 2.1%
SHOW 3,004 0.3%
AT 15,204 1.7%
ADD ON (AND, OR, AND NOT) 10,065 1.1%
LOGON or LOGOFF 160,664 17.6%
COMMENT 439 0.0%
SAVE 9,280 1.0%
USE 12,973 1.4%
OTHER 43,427 4.8%
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 49,831 15.0% 12,438 25.0% 12 91.7 449.0
AUTHOR 16,215 4.9% 4,058 25.0% 13 126.2 612.5
CORPORATE AUTH 3,432 1.0% 1,270 37.0% 25 795.9 4865.5
EXACT CA 72 0.0% 38 52.8% 89 1053.7 2960.0
TITLE WORD 83,058 25.0% 26,460 31.9% 4 46.3 366.0
EXACT TITLE 41,972 12.6% 15,273 36.4% 2 30.6 285.6
TITLE -> TW 8,369 2.5% 2,267 27.1% 9 67.0 613.9
TITLE -> XT 8,295 2.5% 3,903 47.1% 2 11.0 84.9
SUBJECT 20,591 6.2% 8,058 39.1% 52 554.1 6059.4
EXACT SUBJECT 1,039 0.3% 340 32.7% 86 547.5 1897.7
PERIODICAL 58,344 17.6% 13,810 23.7% 5 99.0 1072.0
EXACT PE 17,876 5.4% 3,218 18.0% 3 31.4 361.3
RPE 18 0.0% 9 50.0% 6 6.7 4.9
XRP 6 0.0% 4 66.7% 68 67.5 92.6
COMMENTS 29 0.0% 11 37.9% 4,066 2714.9 1965.8
LANGUAGE 550 0.2% 88 16.0% 77 2182.0 13144.9
DATE 6,027 1.8% 1,366 22.7% 2 57.4 602.8
FORM 2,748 0.8% 787 28.6% 8 155.3 1900.0
NUMBER* 611 0.2% 247 40.4% 1 25.6 139.0
MUSIC* 422 0.1% 227 53.8% 4 169.1 830.9
SERIES 7,194 2.2% 3,340 46.4% 5 86.1 816.6
UNIFORM TITLE 69 0.0% 20 29.0% 2,979 1596.4 1460.3
Other indexes 5,501 1.7% 2,502 45.5% 1 30.6 331.5
* 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 18,155 5.8% 5,480 30.2% 3 60.7 633.9
Single 295,353 94.2% 88,590 30.0% 5 113.1 1811.0
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 185 13.7% 41 22.2% 6 52.2 218.6
CORPORATE AUTH 6 0.4% 1 16.7% 24 74.8 86.9
EXACT CA 1 0.1% 1 100% 0 0.0 0.0
SUBJECT 1,081 80.0% 285 26.4% 35 134.5 509.5
EXACT SUBJECT 68 5.0% 8 11.8% 78 245.3 536.0
UNIFORM TITLE 5 0.4% 2 40.0% 40 76.3 62.9
SERIES 6 0.4% 2 33.3% 125 152.5 155.9
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 1,410 100% 347 24.6% 28 124.1 468.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.4%
BRIEF 68.0%
LONG 9.7%
MARC 4.7%
FIELDS 4.3%
TAG 1.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 1.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. First word of command is invalid 27.5%
2. NS command - no next screen 27.4%
3. FIND command with invalid index name 12.5%
4. DISPLAY command contains invalid word 3.9%
5. KW search in database w/o KW index 3.2%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 1.9%
8. DISPLAY command - no FIND results 1.8%
9. Valid command at an inappropriate time 1.5%
10. Index invalid in current database 1.5%
11. All others 16.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.7%
2. FIND 14.2%
3. INDEXES 7.8%
4. COMMAND WORDS 6.2%
5. Unrecognized term 5.3%
6. PASSWORDS 3.6%
7. DATABASES 3.1%
8. DISPLAY 2.5%
9. LOCATE (PE DB) 2.0%
10. ADD-ON SEARCH 1.6%
11. All others 30.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 20.4%
2. First word of command is invalid 14.7%
3. FIND command with invalid index name 11.0%
4. DISPLAY command - middle of >1 screen 4.4%
5. NS command - no next screen 2.8%
6. DISPLAY command-first of >1 screen 2.7%
7. KW search in database w/o KW index 2.6%
8. FIND command retrieves >1 book 2.6%
9. Help requested from SET DB command 2.4%
10. DISPLAY command-complete in one screen 2.2%
11. All others 34.1%
Ten most frequent SHOW requests:
1. HISTORY 26.6%
2. SEARCH 11.6%
3. GLOSSARY 8.0%
4. TIME 6.9%
5. SYSTEM NEWS 4.5%
6. SETTINGS 3.5%
7. NEWS 3.3%
8. MAIL STATUS 2.5%
9. BIOSIS NEWS 2.2%
10. INSPEC NEWS 2.1%
11. All others 28.9%