MELVYL SYSTEM Z39.50 SERVER STATISTICS
Time period: 02/01/01 through 02/28/01
1.0 GENERAL STATISTICS (includes all databases)
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1.1 System load
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1.1.1 Total sessions:
______________________
Location Total
________ _____
Melvyl Web 820,010
Searchlight 217,672
Berkeley 2,378
Davis 3,916
Irvine 1,931
Los Angeles 2,388
Riverside 750
San Diego 2,987
San Francisco 2,641
Santa Barbara 707
Santa Cruz 269
NRLF 0
SRLF 0
LBL 347
LLL 156
Los Alamos 0
Other - UC 5,956
CSL 0
CSU 828
Stanford 779
Other - Non UC 186,653
_____
1,250,368
1.1.2 Active users
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Average number of active users in a 2 minute interval:
12-2 a.m. 108 12-2 p.m. 437
2-4 a.m. 41 2-4 p.m. 482
4-6 a.m. 28 4-6 p.m. 426
6-8 a.m. 52 6-8 p.m. 248
8-10 a.m. 186 8-10 p.m. 244
10-12 a.m. 385 10-12 p.m. 214
Total connect hours for MELVYL MEDLINE:
For UC users (hrs:mins) 16401.37
For Non-UC users (hrs:mins) 250.80
1.1.3 FIND commands
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Number of FIND commands issued by location:
Location Total
________ _____
Melvyl Web 1,344,924
Searchlight 167,266
Berkeley 6,320
Davis 7,222
Irvine 2,981
Los Angeles 5,516
Riverside 1,309
San Diego 5,358
San Francisco 5,426
Santa Barbara 1,526
Santa Cruz 688
NRLF 0
SRLF 0
LBL 638
LLL 485
Los Alamos 0
Other - UC 12,821
CSL 0
CSU 853
Stanford 1,195
Other - Non UC 241,770
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1,806,298
Average number of FIND commands per hour:
12-2 a.m. 1,144 12-2 p.m. 3,302
2-4 a.m. 494 2-4 p.m. 3,547
4-6 a.m. 433 4-6 p.m. 3,021
6-8 a.m. 702 6-8 p.m. 1,758
8-10 a.m. 1,714 8-10 p.m. 1,796
10-12 a.m. 3,069 10-12 p.m. 1,627
Total number of FIND commands
Peak hourly load of 5,791 FIND commands occurred on 02/09/01 at 4 pm
1.1.4 Records Displayed
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Number of Records Displayed by location:
Location Total
________ _____
Melvyl Web 43,633,558
Searchlight 152,570
Berkeley 77,809
Davis 103,578
Irvine 44,053
Los Angeles 64,067
Riverside 15,064
San Diego 46,524
San Francisco 51,293
Santa Barbara 21,466
Santa Cruz 10,653
NRLF 0
SRLF 0
LBL 7,173
LLL 6,054
Los Alamos 0
Other - UC 157,812
CSL 0
CSU 10,597
Stanford 13,773
Other - Non UC 1,959,329
_____
46,375,373
Average number of records displayed per hour:
12-2 a.m. 17,395 12-2 p.m. 76,812
2-4 a.m. 7,079 2-4 p.m. 83,180
4-6 a.m. 5,295 4-6 p.m. 73,069
6-8 a.m. 9,082 6-8 p.m. 40,694
8-10 a.m. 35,427 8-10 p.m. 44,204
10-12 a.m. 66,011 10-12 p.m. 35,738
Total number of Records Displayed
Peak hourly load of 127,728 records displayed occurred on 02/27/01 at 4 pm
1.2 Relative Use of Databases
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Number of Number of % of System
Database FIND Commands Records Displayed Searches
________ _____________ _________________ ___________
CAT 666,988 14,615,838 36.9%
TEN 0 0 0.0%
PE 190,073 3,731,523 10.5%
ABI 24,909 157,859 1.4%
BIOSIS 72,167 515,845 4.0%
CC 69,006 1,165,552 3.8%
IAC databases 201,215 5,955,804 11.1%
MAGS 171,476 5,593,250 9.5%
NEWS 21,001 260,106 1.2%
COMP 8,738 102,448 0.5%
INS databases 101,057 2,008,266 5.6%
INS 45,367 1,678,533 2.5%
INS90 16,217 144,832 0.9%
INS85 13,684 69,705 0.8%
INS80 12,754 51,683 0.7%
INS69 13,035 63,513 0.7%
MED databases 371,767 12,475,929 20.6%
MED 209,481 10,977,974 11.6%
MED90 43,222 761,850 2.4%
MED85 33,346 332,997 1.8%
MED80 29,422 165,722 1.6%
MED75 27,826 105,705 1.5%
MED66 28,470 131,681 1.6%
PSYC 87,436 694,943 4.8%.
1.3 Response time
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Search response time from receipt of search request
at CDL until transmission of search response:
Average in seconds 1.2
Standard deviation in seconds 7.1
Present response time from receipt of present request
at CDL until transmission of present response:
Average in seconds 0.5
Standard deviation in seconds 2.2.
SSMmm/yy srv.sys MELVYL SYSTEM Z39.50 SERVER STATISTICS (monthly)