Summary:
AIM7 fileserver workload behaviour changed with 2.5.70.
At low task counts (load average), 2.5.70* takes 40%
longer than 2.5.69. As task count increases, regression
disappears.
Hardware has (4) 700 mhz P3 Xeons.
3.75 GB RAM
RAID 0 LUN (hardware raid)
Background:
AIM7 fserver is the only regressed workload. In general,
2.5.70* has better numbers than 2.5.69* for a variety of
benchmarks.
Part of the improvement in 2.5.70 I/O benchmarks is
from a fiber channel configuration change. 2.5.70* has
two online fiber channels. Earlier kernels had only one
fiber channel online.
Tiobench and bonnie++ show about 10% improvement.
LMbench microbenchmarks are generally improving or stable
in recent 2.5.x.
So, it's strange that AIM7 fserver is regressed.
The kernels below are listed in chronological order.
AIM7 database workloads show a nice 27-30% improvement
with 2.5.70*.
Real and CPU are time in seconds.
AIM7 dbase workload
kernel Tasks Jobs/Min Real CPU
2.5.69 32 477.6 398.0 149.3
2.5.69-bk1 32 476.3 399.0 143.1
2.5.69-mm3 32 560.5 339.1 159.3
2.5.69-mm5 32 560.9 338.9 164.0
2.5.70 32 611.1 311.0 153.0
2.5.70-mjb1 32 606.4 313.5 159.2
2.5.70-mm3 32 685.8 277.2 161.8
2.5.69 256 769.9 1975.2 982.2
2.5.69-bk1 256 768.0 1979.9 977.9
2.5.69-mm3 256 906.5 1677.5 1132.8
2.5.69-mm5 256 909.5 1671.9 1088.4
2.5.70 256 1042.7 1458.4 1036.3
2.5.70-mjb1 256 1030.0 1476.4 1049.0
2.5.70-mm3 256 1186.4 1281.8 1066.8
AIM7 fileserver is regressed about 40% at 4 tasks.
As the task load increases, the regression becomes less.
At 32 tasks, 2.5.70* is even or ahead of 2.5.69*.
AIM7 fserver workload
kernel Tasks Jobs/Min Real CPU
2.5.69 4 120.9 200.5 32.8
2.5.69-bk1 4 122.3 198.2 33.8
2.5.69-mm3 4 122.3 198.3 37.9
2.5.69-mm5 4 124.0 195.5 38.0
2.5.70 4 79.0 306.9 34.2
2.5.70-mjb1 4 83.4 290.8 33.6
2.5.70-mm3 4 71.7 338.0 34.9
2.5.70-mm4 4 73.9 328.0 33.9
2.5.69 8 174.7 277.5 61.1
2.5.69-bk1 8 175.8 275.8 64.1
2.5.69-mm3 8 179.4 270.2 65.7
2.5.69-mm5 8 184.3 263.0 66.3
2.5.70 8 136.6 354.9 58.8
2.5.70-mjb1 8 137.3 353.0 57.0
2.5.70-mm3 8 123.9 391.3 58.7
2.5.70-mm4 8 118.4 409.4 57.5
2.5.69 32 234.3 827.6 221.8
2.5.69-bk1 32 236.0 821.8 220.8
2.5.69-mm3 32 253.8 764.0 246.6
2.5.69-mm5 32 254.8 761.0 248.3
2.5.70 32 239.7 809.1 219.4
2.5.70-mjb1 32 248.9 779.2 226.3
2.5.70-mm3 32 231.3 838.4 224.9
AIM7 shared has a similar behavior. At 64 tasks, 2.5.69*
is close to or a little ahead of 2.5.70*.
AIM7 shared workload
kernel Tasks Jobs/Min Real CPU
2.5.69 64 2121.2 175.6 167.5
2.5.69-bk1 64 2096.7 177.7 168.6
2.5.69-mm3 64 2422.3 153.8 179.2
2.5.69-mm5 64 2429.0 153.3 178.3
2.5.70 64 2123.1 175.4 170.0
2.5.70-mjb1 64 2163.9 172.1 175.5
2.5.70-mm3 64 2186.9 170.3 175.7
2.5.69 128 2257.8 329.9 333.9
2.5.69-bk1 128 2269.9 328.2 333.1
2.5.69-mm3 128 2700.6 275.9 352.9
2.5.69-mm5 128 2697.8 276.1 352.8
2.5.70 128 2410.4 309.1 338.2
2.5.70-mjb1 128 2580.1 288.7 354.7
2.5.70-mm3 128 2705.2 275.4 350.6
By 512 tasks, 2.5.70* is AIM7 shared is ahead of 2.5.69*
by 14-20%.
2.5.69 512 2314.7 1287.3 1369.2
2.5.69-bk1 512 2319.4 1284.7 1370.5
2.5.69-mm3 512 2574.1 1157.6 1457.7
2.5.69-mm5 512 2698.3 1104.3 1481.0
2.5.70 512 2788.0 1068.8 1399.1
2.5.70-mjb1 512 2607.6 1142.8 1670.8
2.5.70-mm3 512 3075.9 968.8 1462.8
-- Randy Hron http://home.earthlink.net/~rwhron/kernel/bigbox.html- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Jun 07 2003 - 22:00:26 EST