MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 07/14/01 through 07/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 667 2,268 2,935
Davis 1,651 184 1,835
Irvine 625 0 625
Los Angeles 10 519 529
Riverside 508 101 609
San Diego 384 159 543
San Francisco 235 0 235
Santa Barbara 223 144 367
Santa Cruz 284 119 403
LBL 0 82 82
LLL 0 75 75
Other - UC 35 191 226
CSL 0 182 182
CSU n/a 117 117
Other-Non-UC n/a 3,951 3,951
_______ ______ _____
4,622 8,092 12,714
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 285 865 6,459
2-4 a.m. 223 891 8,831
4-6 a.m. 189 757 5,935
6-8 a.m. 439 1,422 10,899
8-10 a.m. 1,645 5,566 39,112
10-12 a.m. 2,459 8,344 55,971
12-2 p.m. 2,153 7,296 51,190
2-4 p.m. 2,570 9,037 59,491
4-6 p.m. 1,594 5,606 40,775
6-8 p.m. 523 1,638 16,331
8-10 p.m. 306 650 9,561
10-12 p.m. 328 940 12,125
__________ __________ __________ _________________
Total: 12,714 43,012 316,680
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,948 6,530 8,478
Davis 6,215 812 7,027
Irvine 2,354 0 2,354
Los Angeles 28 1,102 1,130
Riverside 2,272 207 2,479
San Diego 1,846 329 2,175
San Francisco 432 0 432
Santa Barbara 772 406 1,178
Santa Cruz 1,329 391 1,720
LBL 0 106 106
LLL 0 236 236
Other - UC 28 878 906
CSL 0 259 259
CSU n/a 484 484
Other-Non-UC n/a 14,048 14,048
_______ ______ _____
17,224 25,788 43,012
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,481 55,143 70,624
Davis 38,140 4,903 43,043
Irvine 15,572 0 15,572
Los Angeles 249 13,186 13,435
Riverside 12,836 1,961 14,797
San Diego 8,143 5,149 13,292
San Francisco 3,899 0 3,899
Santa Barbara 5,831 3,735 9,566
Santa Cruz 4,080 2,668 6,748
LBL 0 972 972
LLL 0 3,872 3,872
Other - UC 377 5,320 5,697
CSL 0 2,314 2,314
CSU n/a 4,497 4,497
Other-Non-UC n/a 108,352 108,352
_______ ______ _____
104,608 212,072 316,680
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 2.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 1.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:44
Average session length (minutes:seconds) 15:28
Longest session recorded (minutes:seconds) 1164
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 59.3
Retrievals per search - standard deviation 889.3
Percent of searches completed with 0 results 28.2%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 61.4%
Commands entered, by type, excluding errors:
Total Percentage
FIND 41,478 36.3%
DISPLAY (excluding automatic displays) 36,661 32.1%
ACFIND 3 0.0%
BROWSE 237 0.2%
SELECT 123 0.1%
HELP 726 0.6%
EXPLAIN 751 0.7%
SET/RESET 3,304 2.9%
SHOW 221 0.2%
AT 2,680 2.3%
ADD ON (AND, OR, AND NOT) 1,526 1.3%
LOGON or LOGOFF 20,124 17.6%
COMMENT 1 0.0%
SAVE 603 0.5%
USE 994 0.9%
OTHER 4,739 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 6,532 15.1% 1,568 24.0% 9 87.0 896.3
AUTHOR 1,632 3.8% 406 24.9% 13 101.8 306.9
CORPORATE AUTH 514 1.2% 185 36.0% 22 1127.8 7531.3
EXACT CA 11 0.0% 6 54.5% 12 442.6 969.0
TITLE WORD 10,175 23.5% 3,315 32.6% 4 43.9 364.1
EXACT TITLE 7,248 16.8% 2,330 32.1% 2 23.0 172.1
TITLE -> TW 1,138 2.6% 314 27.6% 10 72.2 487.7
TITLE -> XT 1,346 3.1% 661 49.1% 1 18.5 141.9
SUBJECT 1,694 3.9% 670 39.6% 30 390.2 1767.2
EXACT SUBJECT 95 0.2% 32 33.7% 45 326.3 781.0
PERIODICAL 7,064 16.3% 1,358 19.2% 5 91.9 959.0
EXACT PE 2,873 6.6% 495 17.2% 3 25.7 349.3
RPE 2 0.0% 0 0.0% 8 8.0 7.1
XRP 4 0.0% 0 0.0% 4 4.3 1.5
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 54 0.1% 4 7.4% 36 355.1 1615.9
DATE 603 1.4% 132 21.9% 5 68.3 221.5
FORM 482 1.1% 107 22.2% 8 302.8 2276.6
NUMBER* 39 0.1% 29 74.4% 6 19.6 37.7
MUSIC* 10 0.0% 5 50.0% 1 3.2 4.9
SERIES 1,095 2.5% 318 29.0% 4 51.2 143.1
UNIFORM TITLE 5 0.0% 0 0.0% 298 337.6 289.7
Other indexes 602 1.4% 280 46.5% 1 24.1 125.5
* 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 2,278 5.6% 612 26.9% 3 94.6 1093.2
Single 38,555 94.4% 10,975 28.5% 4 84.0 1067.0
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 12 5.6% 2 16.7% 6 19.3 31.8
CORPORATE AUTH 4 1.9% 1 25.0% 11 11.0 9.0
EXACT CA 1 0.5% 0 0.0% 1 1.0 0.0
SUBJECT 189 87.9% 30 15.9% 19 165.8 711.1
EXACT SUBJECT 8 3.7% 2 25.0% 147 187.3 218.5
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 1 0.5% 0 0.0% 1 1.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 229 100% 37 16.2% 17 145.7 649.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.1%
BRIEF 66.5%
LONG 10.8%
MARC 3.9%
FIELDS 2.0%
TAG 2.8%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.8%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.4%
Ten most frequent errors:
1. NS command - no next screen 33.5%
2. First word of command is invalid 24.0%
3. FIND command with invalid index name 10.9%
4. DISPLAY command contains invalid word 4.4%
5. Max. # of ports to a Z39 db are in use 3.0%
6. Search term missing from search command 2.7%
7. PS command - no previous screen 1.9%
8. Valid command at an inappropriate time 1.8%
9. KW search in database w/o KW index 1.7%
10. DISPLAY command - no FIND results 1.4%
11. All others 14.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.6%
2. FIND 13.2%
3. COMMAND WORDS 6.9%
4. Unrecognized term 5.6%
5. INDEXES 5.6%
6. PASSWORDS 3.5%
7. 1714 2.9%
8. DISPLAY 2.3%
9. DATABASES 2.3%
10. NRLF 1.9%
11. All others 35.3%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.1%
2. First word of command is invalid 13.0%
3. FIND command with invalid index name 11.2%
4. NS command - no next screen 3.3%
5. FIND command retrieves >1 book 3.3%
6. DISPLAY command - middle of >1 screen 3.3%
7. DISPLAY command-complete in one screen 2.8%
8. DISPLAY command-first of >1 screen 2.4%
9. TW search with zero results 2.2%
10. DISPLAY command - last of >1 screen 2.1%
11. All others 34.2%
Ten most frequent SHOW requests:
1. HISTORY 55.4%
2. SEARCH 12.9%
3. GLOSSARY 10.9%
4. SETTINGS 2.5%
5. LAUC NEWS 2.0%
6. UCSF PASSWORDS 1.5%
7. DATABASE NEWS 1.5%
8. SYSTEM NEWS 1.0%
9. SYSTEM5 NEWS 1.0%
10. MAIL SETTINGS 1.0%
11. All others 10.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)