MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 05/19/01 through 05/25/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 521 2,244 2,765
Davis 2,204 234 2,438
Irvine 843 0 843
Los Angeles 22 626 648
Riverside 628 93 721
San Diego 368 206 574
San Francisco 298 0 298
Santa Barbara 316 189 505
Santa Cruz 322 205 527
LBL 0 96 96
LLL 0 90 90
Other - UC 37 149 186
CSL 0 177 177
CSU n/a 112 112
Other-Non-UC n/a 4,540 4,540
_______ ______ _____
5,559 8,961 14,520
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 353 1,388 11,554
2-4 a.m. 222 858 46,743
4-6 a.m. 217 676 6,157
6-8 a.m. 518 1,893 15,872
8-10 a.m. 1,935 6,408 50,174
10-12 a.m. 2,719 9,644 72,181
12-2 p.m. 2,447 8,442 60,218
2-4 p.m. 2,779 9,487 69,152
4-6 p.m. 1,847 6,147 42,965
6-8 p.m. 613 1,830 -7,785
8-10 p.m. 468 1,355 9,747
10-12 p.m. 402 1,018 8,982
__________ __________ __________ _________________
Total: 14,520 49,146 385,960
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,138 9,544 10,682
Davis 7,576 901 8,477
Irvine 3,483 0 3,483
Los Angeles 33 1,900 1,933
Riverside 1,839 198 2,037
San Diego 988 358 1,346
San Francisco 608 0 608
Santa Barbara 933 448 1,381
Santa Cruz 1,484 510 1,994
LBL 0 154 154
LLL 0 228 228
Other - UC 42 427 469
CSL 0 295 295
CSU n/a 588 588
Other-Non-UC n/a 15,471 15,471
_______ ______ _____
18,124 31,022 49,146
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,064 75,150 85,214
Davis 48,805 4,676 53,481
Irvine 25,424 0 25,424
Los Angeles 123 15,127 15,250
Riverside 15,055 1,839 16,894
San Diego 5,886 3,049 8,935
San Francisco 3,481 0 3,481
Santa Barbara 9,324 4,259 13,583
Santa Cruz 6,697 3,699 10,396
LBL 0 1,318 1,318
LLL 0 2,712 2,712
Other - UC 289 2,869 3,158
CSL 0 1,801 1,801
CSU n/a 5,042 5,042
Other-Non-UC n/a 139,271 139,271
_______ ______ _____
125,148 260,812 385,960
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 2.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:34
Average session length (minutes:seconds) 14:28
Longest session recorded (minutes:seconds) 1144
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 59.4
Retrievals per search - standard deviation 724.7
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 64.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 47,372 35.8%
DISPLAY (excluding automatic displays) 44,080 33.4%
ACFIND 8 0.0%
BROWSE 252 0.2%
SELECT 136 0.1%
HELP 797 0.6%
EXPLAIN 852 0.6%
SET/RESET 3,953 3.0%
SHOW 330 0.2%
AT 2,672 2.0%
ADD ON (AND, OR, AND NOT) 1,752 1.3%
LOGON or LOGOFF 22,757 17.2%
COMMENT 0 0.0%
SAVE 893 0.7%
USE 946 0.7%
OTHER 5,343 4.0%
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 7,931 16.0% 1,814 22.9% 12 75.3 287.5
AUTHOR 2,081 4.2% 521 25.0% 14 124.5 535.0
CORPORATE AUTH 508 1.0% 195 38.4% 19 283.5 1319.1
EXACT CA 25 0.1% 6 24.0% 15 317.8 713.8
TITLE WORD 11,209 22.5% 3,525 31.4% 4 46.1 508.7
EXACT TITLE 8,426 16.9% 2,414 28.6% 2 19.3 113.7
TITLE -> TW 1,183 2.4% 339 28.7% 8 105.3 1454.0
TITLE -> XT 1,279 2.6% 608 47.5% 1 8.6 81.0
SUBJECT 2,293 4.6% 777 33.9% 50 463.1 1933.5
EXACT SUBJECT 139 0.3% 27 19.4% 39 401.0 957.3
PERIODICAL 8,160 16.4% 1,575 19.3% 4 72.0 1095.9
EXACT PE 3,158 6.4% 491 15.5% 3 27.4 422.9
RPE 3 0.0% 1 33.3% 17 16.5 13.4
XRP 1 0.0% 0 0.0% 12 12.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 76 0.2% 9 11.8% 69 1118.9 5558.0
DATE 590 1.2% 146 24.7% 4 86.2 619.0
FORM 697 1.4% 141 20.2% 9 392.8 3620.4
NUMBER* 35 0.1% 18 51.4% 5 17.9 32.5
MUSIC* 11 0.0% 6 54.5% 69 155.4 180.6
SERIES 1,152 2.3% 376 32.6% 3 84.5 417.3
UNIFORM TITLE 4 0.0% 2 50.0% 196 196.0 96.2
Other indexes 760 1.5% 353 46.4% 1 13.3 80.4
* 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 2,846 6.1% 769 27.0% 4 73.5 1055.3
Single 43,870 93.9% 11,775 26.8% 5 82.7 846.1
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 65 30.2% 16 24.6% 3 30.8 108.3
CORPORATE AUTH 3 1.4% 1 33.3% 35 34.5 46.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 130 60.5% 27 20.8% 19 873.4 5072.0
EXACT SUBJECT 17 7.9% 2 11.8% 18 93.3 153.1
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 238 100% 50 21.0% 12 503.5 3769.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 12.0%
BRIEF 65.7%
LONG 9.0%
MARC 4.0%
FIELDS 2.5%
TAG 3.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 3.4%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.0%
Ten most frequent errors:
1. NS command - no next screen 30.5%
2. First word of command is invalid 25.6%
3. FIND command with invalid index name 11.2%
4. DISPLAY command contains invalid word 4.2%
5. Max. # of ports to a Z39 db are in use 3.5%
6. Search term missing from search command 2.4%
7. KW search in database w/o KW index 2.2%
8. DISPLAY command - no FIND results 1.9%
9. PS command - no previous screen 1.5%
10. Valid command at an inappropriate time 1.5%
11. All others 15.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.3%
2. FIND 13.0%
3. COMMAND WORDS 5.9%
4. INDEXES 5.6%
5. Unrecognized term 4.7%
6. PASSWORDS 3.8%
7. DISPLAY 2.6%
8. DATABASES 2.6%
9. CATALOG 1.8%
10. LOCATE (PE DB) 1.5%
11. All others 30.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.9%
2. First word of command is invalid 13.6%
3. FIND command with invalid index name 10.8%
4. DISPLAY command-first of >1 screen 3.7%
5. DISPLAY command - middle of >1 screen 3.5%
6. DISPLAY command-complete in one screen 2.7%
7. NS command - no next screen 2.2%
8. FIND command retrieves >1 book 2.0%
9. DISPLAY command - last of >1 screen 1.9%
10. SU search with zero results 1.9%
11. All others 31.7%
Ten most frequent SHOW requests:
1. HISTORY 38.6%
2. MAIL STATUS 25.5%
3. GLOSSARY 8.4%
4. SEARCH 6.2%
5. SETTINGS 4.0%
6. TIME 1.9%
7. SYSTEM NEWS 1.6%
8. BOOK STATISTICS 1.2%
9. NEWS 0.9%
10. 2288 0.9%
11. All others 10.6%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)