MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/08/01 through 12/14/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 549 1,899 2,448
Davis 1,242 181 1,423
Irvine 351 0 351
Los Angeles 11 379 390
Riverside 323 68 391
San Diego 385 158 543
San Francisco 184 0 184
Santa Barbara 172 94 266
Santa Cruz 153 107 260
LBL 0 76 76
LLL 0 68 68
Other - UC 46 161 207
CSL 0 144 144
CSU n/a 118 118
Other-Non-UC n/a 3,329 3,329
_______ ______ _____
3,416 6,782 10,198
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 190 521 3,682
2-4 a.m. 151 563 4,523
4-6 a.m. 167 530 3,736
6-8 a.m. 392 976 7,068
8-10 a.m. 1,442 4,622 31,816
10-12 a.m. 2,071 7,250 49,401
12-2 p.m. 1,722 5,843 41,570
2-4 p.m. 1,884 6,187 43,254
4-6 p.m. 1,134 4,136 30,948
6-8 p.m. 451 1,371 9,603
8-10 p.m. 322 918 9,092
10-12 p.m. 272 776 7,979
__________ __________ __________ _________________
Total: 10,198 33,693 242,672
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,536 6,189 7,725
Davis 4,066 792 4,858
Irvine 1,950 0 1,950
Los Angeles 5 829 834
Riverside 1,261 128 1,389
San Diego 1,127 398 1,525
San Francisco 255 0 255
Santa Barbara 804 176 980
Santa Cruz 876 314 1,190
LBL 0 60 60
LLL 0 160 160
Other - UC 72 521 593
CSL 0 139 139
CSU n/a 346 346
Other-Non-UC n/a 11,689 11,689
_______ ______ _____
11,952 21,741 33,693
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 15,573 38,311 53,884
Davis 28,926 3,250 32,176
Irvine 11,362 0 11,362
Los Angeles 14 6,738 6,752
Riverside 7,821 1,367 9,188
San Diego 5,895 3,322 9,217
San Francisco 2,010 0 2,010
Santa Barbara 9,966 2,078 12,044
Santa Cruz 3,247 2,279 5,526
LBL 0 778 778
LLL 0 1,146 1,146
Other - UC 249 3,795 4,044
CSL 0 1,386 1,386
CSU n/a 3,821 3,821
Other-Non-UC n/a 89,338 89,338
_______ ______ _____
85,063 157,609 242,672
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 2.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 COMMAND mode statistics:
____________________________
Median session length (minutes:seconds) 10:50
Average session length (minutes:seconds) 14:55
Longest session recorded (minutes:seconds) 1070
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 67.4
Retrievals per search - standard deviation 1602.2
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 62.0%
Commands entered, by type, excluding errors:
Total Percentage
FIND 32,571 35.5%
DISPLAY (excluding automatic displays) 30,148 32.9%
ACFIND 4 0.0%
BROWSE 139 0.2%
SELECT 95 0.1%
HELP 492 0.5%
EXPLAIN 563 0.6%
SET/RESET 2,255 2.5%
SHOW 196 0.2%
AT 2,098 2.3%
ADD ON (AND, OR, AND NOT) 1,114 1.2%
LOGON or LOGOFF 16,849 18.4%
COMMENT 1 0.0%
SAVE 466 0.5%
USE 811 0.9%
OTHER 3,857 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 4,283 12.7% 987 23.0% 10 78.3 335.3
AUTHOR 1,180 3.5% 318 26.9% 12 269.7 2171.6
CORPORATE AUTH 425 1.3% 148 34.8% 17 396.7 2252.0
EXACT CA 6 0.0% 1 16.7% 5 16.8 25.6
TITLE WORD 7,191 21.3% 2,260 31.4% 4 45.4 498.2
EXACT TITLE 5,201 15.4% 1,417 27.2% 2 19.9 140.2
TITLE -> TW 972 2.9% 230 23.7% 9 52.4 246.2
TITLE -> XT 1,284 3.8% 560 43.6% 2 14.7 198.8
SUBJECT 1,480 4.4% 528 35.7% 43 757.5 8666.3
EXACT SUBJECT 81 0.2% 19 23.5% 58 809.0 3037.4
PERIODICAL 6,589 19.5% 1,288 19.5% 5 61.6 656.5
EXACT PE 2,444 7.2% 355 14.5% 3 23.6 142.3
RPE 2 0.0% 0 0.0% 4 3.5 2.1
XRP 1 0.0% 0 0.0% 35 35.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 38 0.1% 10 26.3% 39 339.3 718.6
DATE 509 1.5% 108 21.2% 5 85.3 498.5
FORM 292 0.9% 64 21.9% 13 576.8 4258.3
NUMBER* 18 0.1% 8 44.4% 3 81.7 139.2
MUSIC* 7 0.0% 5 71.4% 61 61.0 0.0
SERIES 735 2.2% 268 36.5% 3 53.4 148.1
UNIFORM TITLE 5 0.0% 1 20.0% 6 380.3 751.2
Other indexes 1,091 3.2% 487 44.6% 1 6.1 75.7
* 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 1,657 5.2% 414 25.0% 3 93.0 1036.8
Single 30,456 94.8% 8,222 27.0% 4 92.9 1940.3
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 10 8.7% 1 10.0% 16 29.8 27.0
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 88 76.5% 22 25.0% 50 209.9 755.3
EXACT SUBJECT 15 13.0% 2 13.3% 18 66.3 103.5
UNIFORM TITLE 2 1.7% 0 0.0% 2 2.0 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 122 100% 26 21.3% 30 156.6 631.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.8%
BRIEF 66.5%
LONG 10.2%
MARC 4.6%
FIELDS 3.3%
TAG 2.2%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.5%
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 28.0%
2. First word of command is invalid 22.1%
3. Max. # of ports to a Z39 db are in use 11.4%
4. FIND command with invalid index name 11.3%
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. 1278 1.7%
9. DISPLAY command - no FIND results 1.5%
10. Valid command at an inappropriate time 1.1%
11. All others 15.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.0%
2. FIND 12.6%
3. INDEXES 6.6%
4. Unrecognized term 6.0%
5. COMMAND WORDS 4.6%
6. PASSWORDS 3.7%
7. DATABASES 3.4%
8. G961 3.2%
9. CATALOG 2.3%
10. NRLF 2.3%
11. All others 33.2%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 24.7%
2. First word of command is invalid 16.9%
3. FIND command with invalid index name 10.4%
4. F/BR with index invalid in current DB 2.9%
5. DISPLAY command-complete in one screen 2.7%
6. DISPLAY command - last of >1 screen 2.7%
7. DISPLAY command - middle of >1 screen 2.7%
8. 1278 2.5%
9. FIND command retrieves >1 book 2.4%
10. TW search with zero results 1.9%
11. All others 30.1%
Ten most frequent SHOW requests:
1. HISTORY 45.1%
2. GLOSSARY 9.8%
3. SETTINGS 8.2%
4. SEARCH 7.1%
5. DATABASE NEWS 3.8%
6. NEWS 3.8%
7. MEDLINE NEWS 3.8%
8. SYSTEM NEWS 1.6%
9. ABI NEWS 1.1%
10. Invalid term 1.1%
11. All others 14.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)