MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 02/10/01 through 02/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,068 3,049 4,117
Davis 2,003 229 2,232
Irvine 831 0 831
Los Angeles 124 659 783
Riverside 735 126 861
San Diego 519 201 720
San Francisco 305 0 305
Santa Barbara 596 309 905
Santa Cruz 422 301 723
LBL 0 139 139
LLL 0 76 76
Other - UC 33 303 336
CSL 0 128 128
CSU n/a 212 212
Other-Non-UC n/a 4,516 4,516
_______ ______ _____
6,636 10,248 16,884
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 241 806 7,631
2-4 a.m. 157 499 5,380
4-6 a.m. 154 411 4,032
6-8 a.m. 436 1,207 11,190
8-10 a.m. 2,000 6,023 46,197
10-12 a.m. 3,244 11,149 82,611
12-2 p.m. 3,157 10,826 79,052
2-4 p.m. 3,420 12,324 87,170
4-6 p.m. 2,382 7,710 60,355
6-8 p.m. 839 2,458 23,328
8-10 p.m. 458 1,373 13,773
10-12 p.m. 396 1,317 11,908
__________ __________ __________ _________________
Total: 16,884 56,103 432,627
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,442 8,705 12,147
Davis 7,961 915 8,876
Irvine 3,198 0 3,198
Los Angeles 296 1,441 1,737
Riverside 2,521 365 2,886
San Diego 1,708 303 2,011
San Francisco 577 0 577
Santa Barbara 1,809 517 2,326
Santa Cruz 2,164 1,111 3,275
LBL 0 175 175
LLL 0 172 172
Other - UC 28 1,128 1,156
CSL 0 424 424
CSU n/a 887 887
Other-Non-UC n/a 16,256 16,256
_______ ______ _____
23,704 32,399 56,103
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 26,960 67,688 94,648
Davis 55,292 4,267 59,559
Irvine 22,418 0 22,418
Los Angeles 2,142 14,300 16,442
Riverside 19,169 2,670 21,839
San Diego 10,513 4,787 15,300
San Francisco 4,950 0 4,950
Santa Barbara 15,133 5,572 20,705
Santa Cruz 10,591 6,103 16,694
LBL 0 2,260 2,260
LLL 0 1,419 1,419
Other - UC 184 9,056 9,240
CSL 0 2,978 2,978
CSU n/a 10,299 10,299
Other-Non-UC n/a 133,876 133,876
_______ ______ _____
167,352 265,275 432,627
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.3
Standard deviation in seconds 0.5
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 8:45
Average session length (minutes:seconds) 13:37
Longest session recorded (minutes:seconds) 573:20
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 70.6
Retrievals per search - standard deviation 1706.5
Percent of searches completed with 0 results 28.5%
Percent of searches entered that are long 4.4%
Percent of long searches completed
(includes partial results) 63.9%
Commands entered, by type, excluding errors:
Total Percentage
FIND 54,443 35.5%
DISPLAY (excluding automatic displays) 50,112 32.6%
ACFIND 18 0.0%
BROWSE 530 0.3%
SELECT 308 0.2%
HELP 1,268 0.8%
EXPLAIN 1,312 0.9%
SET/RESET 4,190 2.7%
SHOW 422 0.3%
AT 3,023 2.0%
ADD ON (AND, OR, AND NOT) 1,621 1.1%
LOGON or LOGOFF 26,977 17.6%
COMMENT 14 0.0%
SAVE 1,293 0.8%
USE 1,396 0.9%
OTHER 6,581 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 8,665 15.0% 2,232 25.8% 10 97.2 440.0
AUTHOR 2,781 4.8% 667 24.0% 13 99.7 428.4
CORPORATE AUTH 602 1.0% 233 38.7% 22 322.9 1060.0
EXACT CA 17 0.0% 3 17.6% 60 201.0 352.7
TITLE WORD 14,534 25.2% 4,634 31.9% 4 44.9 507.3
EXACT TITLE 8,135 14.1% 2,687 33.0% 2 20.9 136.9
TITLE -> TW 1,278 2.2% 363 28.4% 9 64.6 370.4
TITLE -> XT 1,498 2.6% 725 48.4% 1 18.8 169.0
SUBJECT 3,723 6.5% 1,432 38.5% 42 591.1 7524.0
EXACT SUBJECT 188 0.3% 69 36.7% 39 387.8 834.9
PERIODICAL 9,219 16.0% 1,839 19.9% 5 70.4 791.5
EXACT PE 3,472 6.0% 576 16.6% 3 19.8 112.1
RPE 3 0.0% 2 66.7% 6 6.0 0.0
XRP 1 0.0% 0 0.0% 8 8.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 106 0.2% 20 18.9% 73 239.1 446.9
DATE 647 1.1% 159 24.6% 5 60.2 298.4
FORM 751 1.3% 184 24.5% 23 235.4 900.7
NUMBER* 17 0.0% 11 64.7% 1 1.2 0.4
MUSIC* 11 0.0% 7 63.6% 74 68.5 50.9
SERIES 1,284 2.2% 448 34.9% 4 160.8 2502.6
UNIFORM TITLE 10 0.0% 4 40.0% 55 728.2 1668.1
Other indexes 636 1.1% 304 47.8% 1 24.0 121.7
* 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 3,803 7.1% 1,167 30.7% 3 78.3 458.4
Single 49,714 92.9% 14,205 28.6% 5 97.5 2017.4
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 30 6.0% 3 10.0% 102 95.4 126.6
CORPORATE AUTH 3 0.6% 1 33.3% 7 7.0 0.0
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 387 77.4% 91 23.5% 47 119.2 281.3
EXACT SUBJECT 80 16.0% 28 35.0% 39 104.6 189.8
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 503 100% 123 24.5% 43 114.0 260.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 11.4%
BRIEF 67.4%
LONG 11.1%
MARC 2.6%
FIELDS 3.0%
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 7.7%
Ten most frequent errors:
1. NS command - no next screen 29.3%
2. First word of command is invalid 28.0%
3. FIND command with invalid index name 11.7%
4. DISPLAY command contains invalid word 4.5%
5. Search term missing from search command 2.3%
6. Max. # of ports to a Z39 db are in use 2.1%
7. KW search in database w/o KW index 2.1%
8. PS command - no previous screen 1.8%
9. Valid command at an inappropriate time 1.8%
10. DISPLAY command - no FIND results 1.6%
11. All others 14.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.7%
2. FIND 13.3%
3. INDEXES 7.3%
4. Unrecognized term 5.4%
5. COMMAND WORDS 5.0%
6. PASSWORDS 4.6%
7. DISPLAY 2.7%
8. CATALOG 2.3%
9. DATABASES 1.9%
10. SRLF 1.8%
11. All others 28.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 25.0%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 11.3%
4. DISPLAY command - middle of >1 screen 4.7%
5. NS command - no next screen 3.3%
6. FIND command retrieves >1 book 3.1%
7. DISPLAY command-first of >1 screen 2.3%
8. DISPLAY command-complete in one screen 2.2%
9. DISPLAY command - last of >1 screen 2.1%
10. KW search in database w/o KW index 1.8%
11. All others 29.4%
Ten most frequent SHOW requests:
1. HISTORY 41.2%
2. TIME 20.8%
3. SEARCH 10.7%
4. GLOSSARY 7.7%
5. SETTINGS 2.9%
6. MAIL STATUS 2.2%
7. MAIL SETTINGS 1.5%
8. IAC LOADING STATISTICS 1.0%
9. NEWS 1.0%
10. SYSTEM NEWS 0.7%
11. All others 10.4%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)