MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 11/17/01 through 11/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 600 1,682 2,282
Davis 1,400 174 1,574
Irvine 430 0 430
Los Angeles 20 400 420
Riverside 305 87 392
San Diego 209 134 343
San Francisco 137 0 137
Santa Barbara 170 71 241
Santa Cruz 138 118 256
LBL 0 41 41
LLL 0 30 30
Other - UC 23 166 189
CSL 0 95 95
CSU n/a 99 99
Other-Non-UC n/a 3,065 3,065
_______ ______ _____
3,432 6,162 9,594
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 247 804 7,174
2-4 a.m. 205 702 7,421
4-6 a.m. 199 675 5,644
6-8 a.m. 337 805 6,587
8-10 a.m. 1,062 3,274 22,988
10-12 a.m. 1,688 5,959 44,635
12-2 p.m. 1,657 5,624 43,446
2-4 p.m. 1,893 6,585 50,458
4-6 p.m. 1,208 4,029 26,123
6-8 p.m. 476 1,468 12,571
8-10 p.m. 323 722 5,751
10-12 p.m. 299 794 9,346
__________ __________ __________ _________________
Total: 9,594 31,441 242,144
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,339 4,261 5,600
Davis 5,673 717 6,390
Irvine 1,877 0 1,877
Los Angeles 145 884 1,029
Riverside 1,213 242 1,455
San Diego 526 313 839
San Francisco 250 0 250
Santa Barbara 848 137 985
Santa Cruz 1,292 432 1,724
LBL 0 68 68
LLL 0 47 47
Other - UC 43 432 475
CSL 0 149 149
CSU n/a 374 374
Other-Non-UC n/a 10,179 10,179
_______ ______ _____
13,206 18,235 31,441
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,198 37,109 49,307
Davis 37,791 3,001 40,792
Irvine 12,539 0 12,539
Los Angeles 595 7,149 7,744
Riverside 7,784 2,103 9,887
San Diego 3,258 2,328 5,586
San Francisco 1,170 0 1,170
Santa Barbara 6,124 1,279 7,403
Santa Cruz 4,312 3,665 7,977
LBL 0 578 578
LLL 0 339 339
Other - UC 201 3,500 3,701
CSL 0 2,102 2,102
CSU n/a 3,740 3,740
Other-Non-UC n/a 89,279 89,279
_______ ______ _____
85,972 156,172 242,144
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 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.7
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:29
Average session length (minutes:seconds) 14:22
Longest session recorded (minutes:seconds) 678:31
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 62.4
Retrievals per search - standard deviation 1207.4
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 63.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 30,381 35.7%
DISPLAY (excluding automatic displays) 27,211 32.0%
ACFIND 3 0.0%
BROWSE 160 0.2%
SELECT 99 0.1%
HELP 644 0.8%
EXPLAIN 649 0.8%
SET/RESET 2,137 2.5%
SHOW 199 0.2%
AT 2,079 2.4%
ADD ON (AND, OR, AND NOT) 1,047 1.2%
LOGON or LOGOFF 15,777 18.5%
COMMENT 0 0.0%
SAVE 447 0.5%
USE 593 0.7%
OTHER 3,684 4.3%
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 4,786 15.1% 1,160 24.2% 11 97.9 422.8
AUTHOR 1,122 3.5% 270 24.1% 15 102.8 280.2
CORPORATE AUTH 318 1.0% 111 34.9% 16 1251.0 12908.0
EXACT CA 8 0.0% 6 75.0% 87 87.0 93.3
TITLE WORD 7,080 22.3% 2,279 32.2% 4 42.8 277.6
EXACT TITLE 5,498 17.3% 1,680 30.6% 2 18.2 127.5
TITLE -> TW 868 2.7% 196 22.6% 6 42.7 138.0
TITLE -> XT 812 2.6% 377 46.4% 1 15.8 113.0
SUBJECT 1,675 5.3% 545 32.5% 50 376.3 1084.2
EXACT SUBJECT 128 0.4% 22 17.2% 30 324.3 731.8
PERIODICAL 5,200 16.4% 1,077 20.7% 4 66.5 911.8
EXACT PE 1,979 6.2% 280 14.1% 3 17.3 79.6
RPE 3 0.0% 0 0.0% 11 10.3 2.1
XRP 1 0.0% 0 0.0% 2 2.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 33 0.1% 8 24.2% 11 262.6 787.7
DATE 461 1.5% 120 26.0% 4 260.8 3384.7
FORM 244 0.8% 55 22.5% 26 223.7 700.0
NUMBER* 40 0.1% 18 45.0% 2 873.5 4070.3
MUSIC* 14 0.0% 7 50.0% 32 1991.4 3408.6
SERIES 618 1.9% 211 34.1% 5 104.2 463.1
UNIFORM TITLE 5 0.0% 2 40.0% 99 129.0 144.4
Other indexes 832 2.6% 336 40.4% 1 14.8 83.7
* 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 1,644 5.5% 465 28.3% 4 82.6 422.0
Single 28,312 94.5% 7,798 27.5% 4 87.7 1479.1
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 4 2.6% 1 25.0% 3 7.7 8.1
CORPORATE AUTH 1 0.7% 0 0.0% 62 62.0 0.0
EXACT CA 1 0.7% 1 100% 0 0.0 0.0
SUBJECT 141 93.4% 38 26.9% 59 354.4 1391.5
EXACT SUBJECT 3 2.0% 0 0.0% 68 105.3 82.6
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.7% 0 0.0% 44 44.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 151 100% 40 26.5% 59 332.9 1342.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.1%
BRIEF 66.6%
LONG 10.9%
MARC 4.6%
FIELDS 2.3%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.2%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 28.3%
2. First word of command is invalid 22.8%
3. Max. # of ports to a Z39 db are in use 13.8%
4. FIND command with invalid index name 10.7%
5. DISPLAY command contains invalid word 3.8%
6. Search term missing from search command 2.1%
7. PS command - no previous screen 1.8%
8. DISPLAY command - no FIND results 1.5%
9. Valid command at an inappropriate time 1.4%
10. KW search in database w/o KW index 1.4%
11. All others 12.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.2%
2. FIND 14.8%
3. COMMAND WORDS 6.5%
4. INDEXES 6.2%
5. PASSWORDS 5.7%
6. Unrecognized term 3.4%
7. DISPLAY 2.8%
8. DATABASES 2.0%
9. AT 1.7%
10. NRLF 1.5%
11. All others 27.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.4%
2. First word of command is invalid 14.5%
3. FIND command with invalid index name 11.1%
4. DISPLAY command - middle of >1 screen 3.8%
5. FIND command retrieves >1 book 3.2%
6. DISPLAY command-first of >1 screen 2.7%
7. DISPLAY command-complete in one screen 2.4%
8. Help requested from SET DB command 2.0%
9. NS command - no next screen 1.9%
10. TW search with zero results 1.9%
11. All others 31.0%
Ten most frequent SHOW requests:
1. HISTORY 35.8%
2. TIME 11.7%
3. SEARCH 10.1%
4. GLOSSARY 7.8%
5. SETTINGS 7.3%
6. MEDLINE NEWS 2.8%
7. DATABASE NEWS 2.2%
8. NEWS 2.2%
9. MAIL STATUS 2.2%
10. LOCATION 1.7%
11. All others 16.2%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)