MELVYL CATALOG DATABASE TELNET STATISTICS
Time period: 08/18/01 through 08/24/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 518 2,278 2,796
Davis 1,447 225 1,672
Irvine 562 0 562
Los Angeles 2 421 423
Riverside 416 74 490
San Diego 425 107 532
San Francisco 242 0 242
Santa Barbara 191 108 299
Santa Cruz 285 153 438
LBL 0 111 111
LLL 0 65 65
Other - UC 27 181 208
CSL 0 136 136
CSU n/a 97 97
Other-Non-UC n/a 3,801 3,801
_______ ______ _____
4,115 7,757 11,872
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 200 788 8,547
2-4 a.m. 147 443 3,722
4-6 a.m. 141 517 3,781
6-8 a.m. 425 1,076 7,969
8-10 a.m. 1,590 5,182 40,420
10-12 a.m. 2,456 8,908 64,578
12-2 p.m. 2,133 7,739 53,162
2-4 p.m. 2,485 9,281 73,513
4-6 p.m. 1,255 5,243 39,005
6-8 p.m. 481 1,776 12,986
8-10 p.m. 266 865 7,681
10-12 p.m. 293 974 8,930
__________ __________ __________ _________________
Total: 11,872 42,792 324,294
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,311 7,085 8,396
Davis 6,166 1,060 7,226
Irvine 1,757 0 1,757
Los Angeles 2 991 993
Riverside 1,495 154 1,649
San Diego 3,517 241 3,758
San Francisco 390 0 390
Santa Barbara 741 224 965
Santa Cruz 2,363 295 2,658
LBL 0 126 126
LLL 0 134 134
Other - UC 32 483 515
CSL 0 164 164
CSU n/a 358 358
Other-Non-UC n/a 13,703 13,703
_______ ______ _____
17,774 25,018 42,792
1.3 Records Displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,679 52,522 64,201
Davis 34,367 4,589 38,956
Irvine 11,757 0 11,757
Los Angeles 13 7,924 7,937
Riverside 10,661 1,883 12,544
San Diego 13,644 2,300 15,944
San Francisco 3,183 0 3,183
Santa Barbara 7,149 3,860 11,009
Santa Cruz 8,347 3,913 12,260
LBL 0 1,093 1,093
LLL 0 1,251 1,251
Other - UC 301 3,913 4,214
CSL 0 998 998
CSU n/a 4,170 4,170
Other-Non-UC n/a 134,777 134,777
_______ ______ _____
101,101 223,193 324,294
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 3.1
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) 10:48
Average session length (minutes:seconds) 15:00
Longest session recorded (minutes:seconds) 868:45
Average number of searches completed per session 3.5
Retrievals per search - median 2.0
Retrievals per search - average 52.0
Retrievals per search - standard deviation 690.9
Percent of searches completed with 0 results 26.1%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 59.6%
Commands entered, by type, excluding errors:
Total Percentage
FIND 40,910 36.7%
DISPLAY (excluding automatic displays) 36,854 33.0%
ACFIND 11 0.0%
BROWSE 141 0.1%
SELECT 86 0.1%
HELP 471 0.4%
EXPLAIN 646 0.6%
SET/RESET 3,043 2.7%
SHOW 205 0.2%
AT 2,512 2.3%
ADD ON (AND, OR, AND NOT) 1,862 1.7%
LOGON or LOGOFF 18,829 16.9%
COMMENT 1 0.0%
SAVE 794 0.7%
USE 827 0.7%
OTHER 4,364 3.9%
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 6,383 15.0% 1,454 22.8% 11 88.5 580.6
AUTHOR 1,372 3.2% 337 24.6% 13 102.1 312.5
CORPORATE AUTH 454 1.1% 158 34.8% 20 509.7 2637.5
EXACT CA 8 0.0% 1 12.5% 177 1830.6 4290.0
TITLE WORD 11,254 26.5% 3,299 29.3% 3 39.4 634.4
EXACT TITLE 6,608 15.5% 1,925 29.1% 2 25.9 210.4
TITLE -> TW 986 2.3% 220 22.3% 8 49.2 139.9
TITLE -> XT 1,178 2.8% 463 39.3% 2 18.2 218.8
SUBJECT 1,313 3.1% 442 33.7% 43 303.1 1095.4
EXACT SUBJECT 118 0.3% 22 18.6% 30 354.4 1042.7
PERIODICAL 7,231 17.0% 1,463 20.2% 5 92.0 1348.0
EXACT PE 2,732 6.4% 460 16.8% 3 41.1 565.0
RPE 0 0.0% 0 0.0% 0 0.0 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 121 0.3% 48 39.7% 21 190.1 383.6
DATE 515 1.2% 92 17.9% 5 80.4 565.9
FORM 421 1.0% 95 22.6% 13 247.3 2990.1
NUMBER* 26 0.1% 9 34.6% 2 18.6 41.8
MUSIC* 10 0.0% 10 100% 0 0.0 0.0
SERIES 912 2.1% 318 34.9% 2 60.9 313.3
UNIFORM TITLE 2 0.0% 1 50.0% 2 2.0 0.0
Other indexes 878 2.1% 369 42.0% 1 9.9 104.1
* 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 2,158 5.4% 584 27.1% 4 81.4 1393.9
Single 38,116 94.6% 9,996 26.2% 4 71.9 775.4
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 22 19.1% 3 13.6% 4 45.8 150.8
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 79 68.7% 12 15.2% 35 251.9 973.9
EXACT SUBJECT 14 12.2% 4 28.6% 79 166.5 172.2
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 134 100% 22 16.4% 25 177.8 761.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.9%
BRIEF 66.8%
LONG 10.1%
MARC 4.0%
FIELDS 2.6%
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 6.5%
Ten most frequent errors:
1. NS command - no next screen 33.6%
2. First word of command is invalid 25.0%
3. FIND command with invalid index name 10.6%
4. DISPLAY command contains invalid word 4.1%
5. Search term missing from search command 2.6%
6. PS command - no previous screen 2.1%
7. Max. # of ports to a Z39 db are in use 1.9%
8. Valid command at an inappropriate time 1.8%
9. DISPLAY command - no FIND results 1.7%
10. KW search in database w/o KW index 1.5%
11. All others 15.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.4%
2. FIND 12.8%
3. INDEXES 9.3%
4. Unrecognized term 6.7%
5. COMMAND WORDS 6.5%
6. PASSWORDS 3.9%
7. DISPLAY 2.6%
8. LOCATE (PE DB) 1.7%
9. 1773 1.5%
10. MAIL 1.1%
11. All others 32.5%
Ten most frequent HELP situations:
1. Command mode selected from Welcome 26.1%
2. First word of command is invalid 10.7%
3. FIND command with invalid index name 10.0%
4. DISPLAY command - middle of >1 screen 3.4%
5. NS command - no next screen 2.9%
6. FIND command retrieves >1 book 2.6%
7. TW search with zero results 2.5%
8. F/BR with index invalid in current DB 2.2%
9. DISPLAY command-first of >1 screen 2.1%
10. FIND command retrieves 1 book 1.9%
11. All others 35.5%
Ten most frequent SHOW requests:
1. HISTORY 50.3%
2. GLOSSARY 7.1%
3. SETTINGS 7.1%
4. SEARCH 7.1%
5. DATABASE NEWS 2.5%
6. 3399 2.5%
7. MAIL STATUS 2.0%
8. SYSTEMS INFORMATION 2.0%
9. UPDATE 2.0%
10. NEWS 1.5%
11. All others 15.7%
CATmm/dd cat MELVYL CATALOG DATABASE TELNET STATISTICS (weekly)