MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/24/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 899 2,381 3,280
Davis 1,979 262 2,241
Irvine 482 0 482
Los Angeles 14 430 444
Riverside 449 116 565
San Diego 429 155 584
San Francisco 226 0 226
Santa Barbara 282 140 422
Santa Cruz 213 132 345
LBL 0 90 90
LLL 0 74 74
Other - UC 29 269 298
CSL 0 141 141
CSU n/a 171 171
Other-Non-UC n/a 3,976 3,976
_______ ______ _____
5,002 8,337 13,339
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 223 658 4,420
2-4 a.m. 203 614 5,741
4-6 a.m. 184 477 4,086
6-8 a.m. 382 891 6,763
8-10 a.m. 1,602 5,053 33,060
10-12 a.m. 2,471 9,168 61,495
12-2 p.m. 2,453 8,913 66,135
2-4 p.m. 2,687 9,115 59,640
4-6 p.m. 1,694 6,062 44,682
6-8 p.m. 641 2,003 14,725
8-10 p.m. 429 1,179 8,081
10-12 p.m. 370 916 8,800
__________ __________ __________ _________________
Total: 13,339 45,049 317,628
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,364 7,597 9,961
Davis 8,460 1,136 9,596
Irvine 1,743 0 1,743
Los Angeles 322 1,008 1,330
Riverside 1,581 272 1,853
San Diego 1,155 355 1,510
San Francisco 310 0 310
Santa Barbara 1,156 279 1,435
Santa Cruz 1,812 416 2,228
LBL 0 101 101
LLL 0 197 197
Other - UC 71 968 1,039
CSL 0 217 217
CSU n/a 491 491
Other-Non-UC n/a 13,038 13,038
_______ ______ _____
18,974 26,075 45,049
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,123 54,333 70,456
Davis 47,828 5,572 53,400
Irvine 12,056 0 12,056
Los Angeles 934 6,712 7,646
Riverside 11,546 1,479 13,025
San Diego 6,980 3,744 10,724
San Francisco 1,942 0 1,942
Santa Barbara 12,363 2,587 14,950
Santa Cruz 5,767 3,061 8,828
LBL 0 680 680
LLL 0 2,399 2,399
Other - UC 396 5,385 5,781
CSL 0 1,413 1,413
CSU n/a 5,535 5,535
Other-Non-UC n/a 108,793 108,793
_______ ______ _____
115,935 201,693 317,628
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 2.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 1.2
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:57
Average session length (minutes:seconds) 14:45
Longest session recorded (minutes:seconds) 763:22
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 64.3
Retrievals per search - standard deviation 1066.1
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 66.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 43,306 35.6%
DISPLAY (excluding automatic displays) 38,933 32.0%
ACFIND 9 0.0%
BROWSE 293 0.2%
SELECT 164 0.1%
HELP 894 0.7%
EXPLAIN 900 0.7%
SET/RESET 2,918 2.4%
SHOW 233 0.2%
AT 3,247 2.7%
ADD ON (AND, OR, AND NOT) 1,726 1.4%
LOGON or LOGOFF 22,191 18.2%
COMMENT 1 0.0%
SAVE 685 0.6%
USE 1,001 0.8%
OTHER 5,116 4.2%
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 6,478 14.3% 1,487 23.0% 9 77.9 357.9
AUTHOR 1,788 3.9% 437 24.4% 12 99.5 418.9
CORPORATE AUTH 523 1.2% 167 31.9% 14 383.7 1417.1
EXACT CA 17 0.0% 6 35.3% 5 10.9 12.6
TITLE WORD 10,638 23.4% 3,368 31.7% 4 40.8 222.0
EXACT TITLE 6,475 14.3% 1,795 27.7% 2 22.1 126.7
TITLE -> TW 1,220 2.7% 283 23.2% 8 152.3 3032.4
TITLE -> XT 1,673 3.7% 717 42.9% 2 4.8 20.0
SUBJECT 2,602 5.7% 957 36.8% 41 556.0 4485.2
EXACT SUBJECT 161 0.4% 37 23.0% 108 475.5 1074.7
PERIODICAL 7,848 17.3% 1,520 19.4% 5 58.0 628.2
EXACT PE 2,737 6.0% 411 15.0% 3 17.2 147.8
RPE 2 0.0% 1 50.0% 8 8.0 0.0
XRP 1 0.0% 0 0.0% 4 4.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 80 0.2% 16 20.0% 18 1734.1 11571.7
DATE 553 1.2% 123 22.2% 7 126.6 809.0
FORM 552 1.2% 127 23.0% 11 341.3 4110.2
NUMBER* 24 0.1% 10 41.7% 3 1522.2 5315.2
MUSIC* 10 0.0% 4 40.0% 718 701.5 672.1
SERIES 966 2.1% 297 30.7% 5 221.8 1949.1
UNIFORM TITLE 12 0.0% 4 33.3% 171 551.0 1163.2
Other indexes 1,010 2.2% 384 38.0% 1 9.4 63.7
* 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 2,495 5.8% 636 25.5% 4 166.7 2939.2
Single 40,200 94.2% 10,839 27.0% 4 83.3 1072.3
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 9 3.3% 1 11.1% 4 29.1 72.7
CORPORATE AUTH 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 246 91.1% 60 24.4% 34 98.5 172.1
EXACT SUBJECT 9 3.3% 1 11.1% 35 44.9 40.6
UNIFORM TITLE 2 0.7% 0 0.0% 155 155.0 217.8
SERIES 4 1.5% 0 0.0% 6 12.5 14.5
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 278 100% 62 22.3% 23 89.7 163.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.2%
BRIEF 68.1%
LONG 9.9%
MARC 4.3%
FIELDS 2.8%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 27.6%
2. First word of command is invalid 23.5%
3. Max. # of ports to a Z39 db are in use 15.9%
4. FIND command with invalid index name 10.7%
5. DISPLAY command contains invalid word 3.1%
6. Search term missing from search command 1.8%
7. PS command - no previous screen 1.5%
8. KW search in database w/o KW index 1.4%
9. Valid command at an inappropriate time 1.3%
10. DISPLAY command - no FIND results 1.2%
11. All others 12.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.1%
2. FIND 13.6%
3. INDEXES 7.0%
4. COMMAND WORDS 6.9%
5. Unrecognized term 6.2%
6. PASSWORDS 5.2%
7. CATALOG 2.4%
8. DISPLAY 2.2%
9. ADD-ON SEARCH 1.9%
10. LOCATE (PE DB) 1.9%
11. All others 27.6%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.9%
2. First word of command is invalid 16.1%
3. FIND command with invalid index name 14.1%
4. DISPLAY command - middle of >1 screen 3.7%
5. DISPLAY command-first of >1 screen 3.5%
6. NS command - no next screen 2.9%
7. FIND command retrieves >1 book 2.6%
8. TW search with zero results 2.2%
9. Help requested from SET DB command 2.1%
10. KW search in database w/o KW index 1.8%
11. All others 27.1%
Ten most frequent SHOW requests:
1. HISTORY 48.7%
2. GLOSSARY 8.9%
3. SEARCH 8.9%
4. SETTINGS 4.9%
5. MAIL STATUS 4.9%
6. DATABASE NEWS 2.7%
7. NEWS 2.2%
8. FORM NAMES 1.8%
9. TIME 1.3%
10. MEDLINE NEWS 1.3%
11. All others 14.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)