MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 12/23/00 through 12/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 29 473 502
Davis 398 107 505
Irvine 239 0 239
Los Angeles 47 223 270
Riverside 47 27 74
San Diego 159 116 275
San Francisco 200 0 200
Santa Barbara 124 132 256
Santa Cruz 16 72 88
LBL 0 11 11
LLL 0 27 27
Other - UC 6 31 37
CSL 0 118 118
CSU n/a 14 14
Other-Non-UC n/a 1,688 1,688
_______ ______ _____
1,265 3,039 4,304
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 83 288 4,894
2-4 a.m. 56 245 1,856
4-6 a.m. 52 270 7,187
6-8 a.m. 148 386 4,457
8-10 a.m. 549 1,694 12,573
10-12 a.m. 856 2,857 54,767
12-2 p.m. 764 2,992 22,246
2-4 p.m. 745 2,809 56,897
4-6 p.m. 530 1,535 10,173
6-8 p.m. 197 541 6,678
8-10 p.m. 174 421 3,629
10-12 p.m. 150 396 13,565
__________ __________ __________ _________________
Total: 4,304 14,434 198,922
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 283 1,863 2,146
Davis 1,142 371 1,513
Irvine 584 0 584
Los Angeles 191 552 743
Riverside 106 92 198
San Diego 839 208 1,047
San Francisco 323 0 323
Santa Barbara 500 373 873
Santa Cruz 55 292 347
LBL 0 93 93
LLL 0 113 113
Other - UC 5 59 64
CSL 0 211 211
CSU n/a 34 34
Other-Non-UC n/a 6,145 6,145
_______ ______ _____
4,028 10,406 14,434
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,386 12,560 14,946
Davis 8,487 1,392 9,879
Irvine 3,754 0 3,754
Los Angeles 3,214 3,956 7,170
Riverside 429 708 1,137
San Diego 4,248 3,826 8,074
San Francisco 2,706 0 2,706
Santa Barbara 4,161 3,359 7,520
Santa Cruz 307 3,312 3,619
LBL 0 126 126
LLL 0 630 630
Other - UC 31 353 384
CSL 0 1,085 1,085
CSU n/a 215 215
Other-Non-UC n/a 137,677 137,677
_______ ______ _____
29,723 169,199 198,922
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 1.3
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) 6:21
Average session length (minutes:seconds) 17:16
Longest session recorded (minutes:seconds) 857:08
Average number of searches completed per session 3.3
Retrievals per search - median 2.0
Retrievals per search - average 83.9
Retrievals per search - standard deviation 1289.9
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
FIND 13,904 35.4%
DISPLAY (excluding automatic displays) 12,650 32.2%
ACFIND 12 0.0%
BROWSE 82 0.2%
SELECT 51 0.1%
HELP 233 0.6%
EXPLAIN 298 0.8%
SET/RESET 990 2.5%
SHOW 137 0.3%
AT 491 1.2%
ADD ON (AND, OR, AND NOT) 508 1.3%
LOGON or LOGOFF 6,969 17.7%
COMMENT 9 0.0%
SAVE 564 1.4%
USE 314 0.8%
OTHER 2,071 5.3%
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 2,405 16.6% 550 22.9% 14 88.7 424.6
AUTHOR 840 5.8% 192 22.9% 17 151.7 921.8
CORPORATE AUTH 104 0.7% 40 38.5% 105 391.4 706.7
EXACT CA 1 0.0% 1 100% 0 0.0 0.0
TITLE WORD 3,349 23.1% 1,080 32.2% 4 40.0 163.7
EXACT TITLE 2,101 14.5% 552 26.3% 2 15.3 88.6
TITLE -> TW 263 1.8% 75 28.5% 7 46.1 129.7
TITLE -> XT 330 2.3% 143 43.3% 1 4.8 14.5
SUBJECT 732 5.0% 259 35.4% 53 592.8 2264.1
EXACT SUBJECT 57 0.4% 16 28.1% 54 1831.3 7119.0
PERIODICAL 2,674 18.4% 529 19.8% 4 152.1 2841.7
EXACT PE 696 4.8% 89 12.8% 3 17.6 82.8
RPE 1 0.0% 0 0.0% 2 2.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 24 0.2% 0 0.0% 129 2010.5 4797.8
DATE 269 1.9% 52 19.3% 8 176.2 683.2
FORM 155 1.1% 32 20.6% 33 152.5 458.5
NUMBER* 0 0.0% 0 0.0% 0 0.0 0.0
MUSIC* 1 0.0% 1 100% 0 0.0 0.0
SERIES 282 1.9% 69 24.5% 2 102.1 772.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 241 1.7% 104 43.2% 1 18.0 102.4
* 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 748 5.5% 174 23.3% 7 159.2 865.4
Single 12,955 94.5% 3,422 26.4% 5 110.0 1554.8
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 7 8.5% 0 0.0% 22 90.3 189.1
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 44 53.7% 7 15.9% 32 168.9 241.8
EXACT SUBJECT 29 35.4% 2 6.9% 357 2659.6 6201.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 2 2.4% 1 50.0% 2 2.0 0.0
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 82 100% 10 12.2% 50 1092.9 3950.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.5%
BRIEF 68.1%
LONG 12.8%
MARC 2.0%
FIELDS 2.8%
TAG 1.9%
PERIODICALS 0.0%
COMMENTS 0.0%
Other (includes BROWSE, ACFIND) 2.0%
3.0 Error, EXPLAIN and HELP statistics
__________________________________________________________
Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 30.3%
2. First word of command is invalid 24.8%
3. FIND command with invalid index name 11.7%
4. DISPLAY command contains invalid word 4.1%
5. KW search in database w/o KW index 3.1%
6. Search term missing from search command 2.1%
7. Max. # of ports to a Z39 db are in use 1.7%
8. DISPLAY command - no FIND results 1.6%
9. PS command - no previous screen 1.6%
10. Index invalid in current database 1.2%
11. All others 17.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.5%
2. FIND 11.4%
3. INDEXES 7.7%
4. PASSWORDS 6.7%
5. COMMAND WORDS 6.4%
6. DISPLAY 6.0%
7. Unrecognized term 5.7%
8. DATABASES 2.7%
9. MAIL 2.0%
10. DATES 2.0%
11. All others 28.9%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 22.4%
2. First word of command is invalid 10.9%
3. FIND command with invalid index name 10.9%
4. TW search with zero results 3.8%
5. DISPLAY command-first of >1 screen 3.4%
6. DISPLAY command - middle of >1 screen 3.2%
7. FIND command retrieves >1 book 2.8%
8. KW search in database w/o KW index 2.4%
9. NS command - no next screen 2.3%
10. DISPLAY command - last of >1 screen 2.3%
11. All others 35.6%
Ten most frequent SHOW requests:
1. TIME 41.9%
2. HISTORY 17.8%
3. GLOSSARY 10.1%
4. MAIL STATUS 5.4%
5. Z39.50 NEWS 3.1%
6. SETTINGS 3.1%
7. SEARCH 3.1%
8. INSPEC LOADING STATISTICS 1.6%
9. STANFORD UNIVERSITY PASSWORDS 1.6%
10. 0213 1.6%
11. All others 10.9%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)