MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 10/20/01 through 10/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 661 2,257 2,918
Davis 1,912 167 2,079
Irvine 638 0 638
Los Angeles 8 418 426
Riverside 448 114 562
San Diego 324 139 463
San Francisco 186 0 186
Santa Barbara 241 129 370
Santa Cruz 213 161 374
LBL 0 84 84
LLL 0 44 44
Other - UC 32 190 222
CSL 0 160 160
CSU n/a 174 174
Other-Non-UC n/a 3,593 3,593
_______ ______ _____
4,663 7,630 12,293
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 270 785 5,592
2-4 a.m. 167 382 3,771
4-6 a.m. 172 414 2,860
6-8 a.m. 380 1,091 7,429
8-10 a.m. 1,562 5,802 48,209
10-12 a.m. 2,442 9,001 60,998
12-2 p.m. 2,339 8,547 55,964
2-4 p.m. 2,300 8,037 53,505
4-6 p.m. 1,456 4,843 36,041
6-8 p.m. 541 1,762 12,115
8-10 p.m. 334 800 7,251
10-12 p.m. 330 1,740 8,213
__________ __________ __________ _________________
Total: 12,293 43,204 301,948
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,714 6,975 8,689
Davis 8,070 693 8,763
Irvine 3,038 0 3,038
Los Angeles 4 1,816 1,820
Riverside 1,649 236 1,885
San Diego 1,202 222 1,424
San Francisco 256 0 256
Santa Barbara 1,136 323 1,459
Santa Cruz 1,752 312 2,064
LBL 0 95 95
LLL 0 99 99
Other - UC 42 514 556
CSL 0 208 208
CSU n/a 708 708
Other-Non-UC n/a 12,140 12,140
_______ ______ _____
18,863 24,341 43,204
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,101 48,977 64,078
Davis 44,784 3,730 48,514
Irvine 18,614 0 18,614
Los Angeles 3 8,450 8,453
Riverside 10,472 1,643 12,115
San Diego 7,129 2,799 9,928
San Francisco 1,910 0 1,910
Santa Barbara 11,421 4,872 16,293
Santa Cruz 6,019 3,179 9,198
LBL 0 837 837
LLL 0 630 630
Other - UC 197 3,148 3,345
CSL 0 1,667 1,667
CSU n/a 8,202 8,202
Other-Non-UC n/a 98,164 98,164
_______ ______ _____
115,650 186,298 301,948
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.7
Standard deviation in seconds 4.9
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:52
Average session length (minutes:seconds) 14:45
Longest session recorded (minutes:seconds) 736:32
Average number of searches completed per session 3.5
Retrievals per search - median 2.0
Retrievals per search - average 145.2
Retrievals per search - standard deviation 2294.8
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 66.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 41,818 36.4%
DISPLAY (excluding automatic displays) 37,436 32.6%
ACFIND 12 0.0%
BROWSE 221 0.2%
SELECT 153 0.1%
HELP 857 0.7%
EXPLAIN 796 0.7%
SET/RESET 3,118 2.7%
SHOW 235 0.2%
AT 2,605 2.3%
ADD ON (AND, OR, AND NOT) 1,372 1.2%
LOGON or LOGOFF 19,911 17.3%
COMMENT 1 0.0%
SAVE 812 0.7%
USE 839 0.7%
OTHER 4,741 4.1%
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 6,214 14.2% 1,474 23.7% 10 68.6 243.7
AUTHOR 1,368 3.1% 328 24.0% 13 124.3 488.3
CORPORATE AUTH 440 1.0% 174 39.5% 13 429.3 1996.3
EXACT CA 31 0.1% 4 12.9% 2 289.8 1487.7
TITLE WORD 9,358 21.3% 3,060 32.7% 4 79.2 2662.7
EXACT TITLE 7,538 17.2% 2,034 27.0% 2 20.3 141.7
TITLE -> TW 975 2.2% 225 23.1% 7 51.1 186.1
TITLE -> XT 1,398 3.2% 648 46.4% 1 7.1 43.5
SUBJECT 2,057 4.7% 720 35.0% 45 703.3 8449.6
EXACT SUBJECT 161 0.4% 39 24.2% 87 804.7 5548.0
PERIODICAL 7,208 16.4% 1,449 20.1% 4 96.2 1019.8
EXACT PE 2,995 6.8% 460 15.4% 2 18.6 122.2
RPE 5 0.0% 3 60.0% 2 1.5 0.7
XRP 3 0.0% 0 0.0% 3 2.3 1.2
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 138 0.3% 30 21.7% 22 740.4 3726.0
DATE 1,667 3.8% 330 19.8% 14 2579.9 8858.3
FORM 513 1.2% 114 22.2% 12 194.2 1661.9
NUMBER* 26 0.1% 12 46.2% 4 164.2 387.1
MUSIC* 7 0.0% 6 85.7% 3 3.0 0.0
SERIES 834 1.9% 229 27.5% 2 40.3 129.4
UNIFORM TITLE 4 0.0% 2 50.0% 110 109.5 19.1
Other indexes 898 2.0% 392 43.7% 1 28.5 171.9
* 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 2,371 5.7% 622 26.2% 4 184.4 4899.6
Single 38,870 94.3% 10,455 26.9% 4 204.3 2530.1
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 12 6.0% 2 16.7% 43 110.8 155.0
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 185 92.5% 33 17.8% 57 392.7 3213.8
EXACT SUBJECT 3 1.5% 0 0.0% 46 50.3 44.7
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 208 100% 35 16.8% 47 353.4 3013.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
BRIEF 66.3%
LONG 8.7%
MARC 3.9%
FIELDS 2.5%
TAG 4.3%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 4.3%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 32.7%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 12.0%
4. DISPLAY command contains invalid word 4.0%
5. Search term missing from search command 2.8%
6. PS command - no previous screen 2.1%
7. DISPLAY command - no FIND results 1.7%
8. KW search in database w/o KW index 1.7%
9. Max. # of ports to a Z39 db are in use 1.4%
10. Valid command at an inappropriate time 1.3%
11. All others 15.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.8%
2. FIND 13.9%
3. INDEXES 7.2%
4. COMMAND WORDS 6.9%
5. Unrecognized term 4.6%
6. PASSWORDS 4.0%
7. CATALOG 2.0%
8. DATABASES 2.0%
9. LOCATE (PE DB) 1.8%
10. NRLF 1.6%
11. All others 27.1%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.3%
2. First word of command is invalid 13.3%
3. FIND command with invalid index name 13.2%
4. DISPLAY command - middle of >1 screen 3.5%
5. DISPLAY command-first of >1 screen 3.0%
6. FIND command retrieves >1 book 2.7%
7. DISPLAY command - last of >1 screen 2.4%
8. TW search with zero results 2.1%
9. NS command - no next screen 2.0%
10. DISPLAY command-complete in one screen 1.8%
11. All others 30.8%
Ten most frequent SHOW requests:
1. HISTORY 42.7%
2. GLOSSARY 7.9%
3. SEARCH 7.0%
4. SETTINGS 6.6%
5. SYSTEMS INFORMATION 5.3%
6. NEWS 4.0%
7. DATABASE NEWS 3.1%
8. MEDLINE NEWS 2.6%
9. MAIL STATUS 2.6%
10. 2292 1.8%
11. All others 16.3%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)