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Home -> Community -> Usenet -> c.d.o.server -> Interleave factor performance impact
My test Oracle database server is performing better than my production database server.
I've spent much time looking at database stats and tweaking different things at the database level but nothing has helped.
One thing I noticed between the two servers is that the test box has all memory 16-way interleaved while the production box has a mix of 8-way and 16-way. I looked at memory configuration after I found memory intensive queries ran faster on test.
How much impact does the interleave factor has on performance?
Here's the prtdiag output for both servers.
TEST SERVER:
/usr/platform/sun4u/sbin/prtdiag -v
System Configuration: Sun Microsystems sun4u Sun Fire 6800
System clock frequency: 150 MHz
Memory size: 32768 Megabytes
CPU Run E$ CPU CPU
FRU Name ID MHz MB Impl. Mask
---------- ------- ---- ---- ------- ----
/N0/SB1/P0 4 1200 8.0 US-III+ 11.0
/N0/SB1/P1 5 1200 8.0 US-III+ 11.0
/N0/SB1/P2 6 1200 8.0 US-III+ 11.0
/N0/SB1/P3 7 1200 8.0 US-III+ 11.0
/N0/SB3/P0 12 1200 8.0 US-III+ 11.0
/N0/SB3/P1 13 1200 8.0 US-III+ 11.0
/N0/SB3/P2 14 1200 8.0 US-III+ 11.0
/N0/SB3/P3 15 1200 8.0 US-III+ 11.0
/N0/SB5/P0 20 1200 8.0 US-III+ 11.0
/N0/SB5/P1 21 1200 8.0 US-III+ 11.0
/N0/SB5/P2 22 1200 8.0 US-III+ 11.0
/N0/SB5/P3 23 1200 8.0 US-III+ 11.0
========================= Memory Configuration
===============================
Logical Logical Logical
Port Bank Bank Bank DIMM Interleave
Interleave
FRU Name ID Num Size Status Size Factor
Segment
------------- ---- ---- ------ ----------- ------ ----------
----------
/N0/SB1/P0/B0 4 0 512MB pass 256MB 16-way
0
/N0/SB1/P0/B1 4 1 512MB pass 256MB 16-way
0
/N0/SB1/P0/B0 4 2 512MB pass 256MB 16-way
0
/N0/SB1/P0/B1 4 3 512MB pass 256MB 16-way
0
/N0/SB1/P1/B0 5 0 512MB pass 256MB 16-way
0
/N0/SB1/P1/B1 5 1 512MB pass 256MB 16-way
0
/N0/SB1/P1/B0 5 2 512MB pass 256MB 16-way
0
/N0/SB1/P1/B1 5 3 512MB pass 256MB 16-way
0
/N0/SB1/P2/B0 6 0 512MB pass 256MB 16-way
0
/N0/SB1/P2/B1 6 1 512MB pass 256MB 16-way
0
/N0/SB1/P2/B0 6 2 512MB pass 256MB 16-way
0
/N0/SB1/P2/B1 6 3 512MB pass 256MB 16-way
0
/N0/SB1/P3/B0 7 0 512MB pass 256MB 16-way
0
/N0/SB1/P3/B1 7 1 512MB pass 256MB 16-way
0
/N0/SB1/P3/B0 7 2 512MB pass 256MB 16-way
0
/N0/SB1/P3/B1 7 3 512MB pass 256MB 16-way
0
/N0/SB3/P0/B0 12 0 512MB pass 256MB 16-way
1
/N0/SB3/P0/B1 12 1 512MB pass 256MB 16-way
1
/N0/SB3/P0/B0 12 2 512MB pass 256MB 16-way
1
/N0/SB3/P0/B1 12 3 512MB pass 256MB 16-way
1
/N0/SB3/P1/B0 13 0 512MB pass 256MB 16-way
1
/N0/SB3/P1/B1 13 1 512MB pass 256MB 16-way
1
/N0/SB3/P1/B0 13 2 512MB pass 256MB 16-way
1
/N0/SB3/P1/B1 13 3 512MB pass 256MB 16-way
1
/N0/SB3/P2/B0 14 0 512MB pass 256MB 16-way
1
/N0/SB3/P2/B1 14 1 512MB pass 256MB 16-way
1
/N0/SB3/P2/B0 14 2 512MB pass 256MB 16-way
1
/N0/SB3/P2/B1 14 3 512MB pass 256MB 16-way
1
/N0/SB3/P3/B0 15 0 512MB pass 256MB 16-way
1
/N0/SB3/P3/B1 15 1 512MB pass 256MB 16-way
1
/N0/SB3/P3/B0 15 2 512MB pass 256MB 16-way
1
/N0/SB3/P3/B1 15 3 512MB pass 256MB 16-way
1
/N0/SB5/P0/B0 20 0 1024MB pass 512MB 16-way
2
/N0/SB5/P0/B1 20 1 1024MB pass 512MB 16-way
2
/N0/SB5/P0/B0 20 2 1024MB pass 512MB 16-way
2
/N0/SB5/P0/B1 20 3 1024MB pass 512MB 16-way
2
/N0/SB5/P1/B0 21 0 1024MB pass 512MB 16-way
2
/N0/SB5/P1/B1 21 1 1024MB pass 512MB 16-way
2
/N0/SB5/P1/B0 21 2 1024MB pass 512MB 16-way
2
/N0/SB5/P1/B1 21 3 1024MB pass 512MB 16-way
2
/N0/SB5/P2/B0 22 0 1024MB pass 512MB 16-way
2
/N0/SB5/P2/B1 22 1 1024MB pass 512MB 16-way
2
/N0/SB5/P2/B0 22 2 1024MB pass 512MB 16-way
2
/N0/SB5/P2/B1 22 3 1024MB pass 512MB 16-way
2
/N0/SB5/P3/B0 23 0 1024MB pass 512MB 16-way
2
/N0/SB5/P3/B1 23 1 1024MB pass 512MB 16-way
2
/N0/SB5/P3/B0 23 2 1024MB pass 512MB 16-way
2
/N0/SB5/P3/B1 23 3 1024MB pass 512MB 16-way
2
PRODUCTION SERVER:
/usr/platform/sun4u/sbin/prtdiag -v | more
System Configuration: Sun Microsystems sun4u Sun Fire 15K
System clock frequency: 150 MHz
Memory size: 57344 Megabytes
CPU Run E$ CPU CPU
Slot ID ID MHz MB Impl. Mask
-------- ------- ---- ---- ------- ----
/SB00/P0 0 1200 8.0 US-III+ 11.0
/SB00/P1 1 1200 8.0 US-III+ 11.0
/SB00/P2 2 1200 8.0 US-III+ 11.0
/SB00/P3 3 1200 8.0 US-III+ 11.0
/SB01/P0 32 1200 8.0 US-III+ 11.0
/SB01/P1 33 1200 8.0 US-III+ 11.0
/SB01/P2 34 1200 8.0 US-III+ 11.0
/SB01/P3 35 1200 8.0 US-III+ 11.0
/SB02/P0 64 1200 8.0 US-III+ 11.0
/SB02/P1 65 1200 8.0 US-III+ 11.0
/SB02/P2 66 1200 8.0 US-III+ 11.0
/SB02/P3 67 1200 8.0 US-III+ 11.0
/SB14/P0 448 1200 8.0 US-III+ 11.0
/SB14/P1 449 1200 8.0 US-III+ 11.0
/SB14/P2 450 1200 8.0 US-III+ 11.0
/SB14/P3 451 1200 8.0 US-III+ 11.0
========================= Memory Configuration
=========================
Logical Logical Logical
Port Bank Bank Bank DIMM Interleave
Interleave
Slot ID ID Number Size Status Size Factor
Segment
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