MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 09/15/01 through 09/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 695 2,171 2,866
Davis 1,636 164 1,800
Irvine 669 0 669
Los Angeles 14 333 347
Riverside 414 47 461
San Diego 370 149 519
San Francisco 184 0 184
Santa Barbara 170 106 276
Santa Cruz 200 124 324
LBL 0 103 103
LLL 0 70 70
Other - UC 32 241 273
CSL 0 113 113
CSU n/a 128 128
Other-Non-UC n/a 3,841 3,841
_______ ______ _____
4,384 7,590 11,974
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 234 852 6,044
2-4 a.m. 164 540 4,476
4-6 a.m. 164 651 3,587
6-8 a.m. 448 1,352 7,515
8-10 a.m. 1,637 5,140 38,418
10-12 a.m. 2,263 8,153 55,568
12-2 p.m. 2,151 6,589 53,488
2-4 p.m. 2,423 8,366 85,639
4-6 p.m. 1,407 4,357 35,226
6-8 p.m. 484 1,432 11,957
8-10 p.m. 310 772 9,108
10-12 p.m. 289 840 6,450
__________ __________ __________ _________________
Total: 11,974 39,044 317,476
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,769 6,970 8,739
Davis 6,169 696 6,865
Irvine 2,197 0 2,197
Los Angeles 46 832 878
Riverside 1,518 91 1,609
San Diego 1,319 306 1,625
San Francisco 295 0 295
Santa Barbara 601 184 785
Santa Cruz 1,206 266 1,472
LBL 0 156 156
LLL 0 181 181
Other - UC 16 548 564
CSL 0 197 197
CSU n/a 520 520
Other-Non-UC n/a 12,961 12,961
_______ ______ _____
15,136 23,908 39,044
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16,391 53,846 70,237
Davis 37,271 3,213 40,484
Irvine 15,130 0 15,130
Los Angeles 240 6,716 6,956
Riverside 8,951 1,121 10,072
San Diego 5,604 1,616 7,220
San Francisco 2,386 0 2,386
Santa Barbara 6,598 1,333 7,931
Santa Cruz 3,374 1,855 5,229
LBL 0 1,050 1,050
LLL 0 1,578 1,578
Other - UC 163 3,840 4,003
CSL 0 1,151 1,151
CSU n/a 6,841 6,841
Other-Non-UC n/a 137,208 137,208
_______ ______ _____
96,108 221,368 317,476
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 1.8
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) 10:31
Average session length (minutes:seconds) 13:57
Longest session recorded (minutes:seconds) 618:48
Average number of searches completed per session 3.2
Retrievals per search - median 2.0
Retrievals per search - average 62.5
Retrievals per search - standard deviation 869.5
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 62.5%
Commands entered, by type, excluding errors:
Total Percentage
FIND 37,561 35.7%
DISPLAY (excluding automatic displays) 33,425 31.7%
ACFIND 17 0.0%
BROWSE 255 0.2%
SELECT 172 0.2%
HELP 767 0.7%
EXPLAIN 736 0.7%
SET/RESET 3,059 2.9%
SHOW 273 0.3%
AT 2,329 2.2%
ADD ON (AND, OR, AND NOT) 1,449 1.4%
LOGON or LOGOFF 19,334 18.4%
COMMENT 0 0.0%
SAVE 667 0.6%
USE 620 0.6%
OTHER 4,683 4.4%
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 5,651 14.3% 1,409 24.9% 10 87.3 531.2
AUTHOR 1,465 3.7% 341 23.3% 10 109.2 345.5
CORPORATE AUTH 473 1.2% 185 39.1% 16 221.7 700.6
EXACT CA 7 0.0% 1 14.3% 22 1267.5 3061.2
TITLE WORD 9,204 23.3% 2,901 31.5% 4 76.8 1452.9
EXACT TITLE 6,738 17.1% 1,827 27.1% 2 18.6 118.7
TITLE -> TW 948 2.4% 236 24.9% 7 45.2 92.1
TITLE -> XT 1,106 2.8% 533 48.2% 1 19.0 213.0
SUBJECT 1,773 4.5% 570 32.1% 39 391.5 1961.1
EXACT SUBJECT 80 0.2% 18 22.5% 84 614.0 1791.3
PERIODICAL 6,460 16.4% 1,265 19.6% 5 86.0 813.5
EXACT PE 2,516 6.4% 376 14.9% 3 51.8 1275.4
RPE 12 0.0% 0 0.0% 3 6.3 8.0
XRP 13 0.0% 0 0.0% 3 3.2 1.3
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 59 0.1% 6 10.2% 74 207.4 504.2
DATE 538 1.4% 112 20.8% 3 75.6 349.6
FORM 567 1.4% 136 24.0% 14 340.0 2331.4
NUMBER* 31 0.1% 7 22.6% 2 59.5 222.7
MUSIC* 61 0.2% 35 57.4% 90 312.6 630.8
SERIES 794 2.0% 249 31.4% 2 76.0 364.7
UNIFORM TITLE 4 0.0% 1 25.0% 3 11.7 15.9
Other indexes 1,006 2.5% 380 37.8% 1 12.2 154.2
* 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 2,330 6.3% 636 27.3% 4 103.3 982.9
Single 34,680 93.7% 9,287 26.8% 4 84.3 1013.7
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 16 6.9% 1 6.3% 4 75.2 206.6
CORPORATE AUTH 7 3.0% 1 14.3% 8 31.8 41.9
EXACT CA 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 191 82.0% 31 16.2% 29 93.0 127.7
EXACT SUBJECT 16 6.9% 3 18.8% 35 68.8 81.3
UNIFORM TITLE 1 0.4% 1 100% 0 0.0 0.0
SERIES 2 0.9% 0 0.0% 254 253.5 150.6
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 242 100% 39 16.1% 26 87.6 130.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.6%
BRIEF 67.8%
LONG 9.1%
MARC 5.0%
FIELDS 2.9%
TAG 2.7%
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 7.6%
Ten most frequent errors:
1. NS command - no next screen 30.8%
2. First word of command is invalid 25.8%
3. FIND command with invalid index name 12.5%
4. DISPLAY command contains invalid word 3.9%
5. Search term missing from search command 2.9%
6. Max. # of ports to a Z39 db are in use 2.2%
7. PS command - no previous screen 1.8%
8. DISPLAY command - no FIND results 1.7%
9. Valid command at an inappropriate time 1.5%
10. KW search in database w/o KW index 1.4%
11. All others 15.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.7%
2. FIND 13.7%
3. INDEXES 7.5%
4. COMMAND WORDS 5.7%
5. PASSWORDS 5.2%
6. Unrecognized term 4.3%
7. DISPLAY 3.3%
8. NRLF 2.4%
9. DATABASES 2.3%
10. ADD-ON SEARCH 1.9%
11. All others 31.0%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 23.3%
2. First word of command is invalid 15.4%
3. FIND command with invalid index name 11.6%
4. DISPLAY command - middle of >1 screen 5.1%
5. DISPLAY command-first of >1 screen 3.3%
6. NS command - no next screen 2.7%
7. FIND command retrieves >1 book 2.5%
8. DISPLAY command - last of >1 screen 2.2%
9. TW search with zero results 2.2%
10. Help requested from SET DB command 2.0%
11. All others 29.7%
Ten most frequent SHOW requests:
1. HISTORY 43.1%
2. SEARCH 8.9%
3. SETTINGS 7.8%
4. GLOSSARY 7.4%
5. DATABASE NEWS 5.6%
6. PE LOADING STATISTICS 2.6%
7. UPDATE 2.6%
8. STATISTICS 1.5%
9. 2292 1.5%
10. IAC NEWS 1.1%
11. All others 17.8%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)