16-way stacker performance

From: serue@private
Date: Wed Jun 01 2005 - 13:39:01 PDT


Attached are the results of several benchmarks on a 16-way
test machine.  The test machine was a 4-way power5 machine
partitioned into a capped 16-way ppc machine, running REL4,
a 2.6.12-rc2 kernel, with a slightly modified targeted policy
(to upgrade from 2.6.9 to 2.6.12).  Preemption was disabled.

Tests run as before were dbench, kernbench, tbench, and reaim.

thanks,
-serge

******************************************************************
dbench:
******************************************************************


(16 clients)

nostack:

687.86
683.063
632.883
681.188
678.807
682.378
674.367
622.307
671.326
672.699

mean 668.687800 stdev 21.233841

stack:

675.682
647.182
675.471
667.481
673.227
672.672
632.894
670.816
667.1
622.341

mean 660.486600 stdev 18.327684

******************************************************************
kernbench
******************************************************************

nostack:
3687.91user 559.72system 4:31.24elapsed 1565%CPU (0avgtext+0avgdata 0maxresident)k
3688.58user 553.15system 4:31.20elapsed 1564%CPU (0avgtext+0avgdata 0maxresident)k
3682.76user 553.64system 4:31.21elapsed 1561%CPU (0avgtext+0avgdata 0maxresident)k

sys average 555.503333 stdev 2.988337

stack:
3693.20user 557.55system 4:31.83elapsed 1563%CPU (0avgtext+0avgdata 0maxresident)k
3692.45user 553.90system 4:31.54elapsed 1563%CPU (0avgtext+0avgdata 0maxresident)k
3684.55user 560.27system 4:31.56elapsed 1563%CPU (0avgtext+0avgdata 0maxresident)k

sys average 557.240000 stdev 2.609764

******************************************************************
reaim
******************************************************************

REAIM Workload
Times are in seconds - Child times from tms.cstime and tms.cutime

nostack

Num     Parent   Child   Child  Jobs per   Jobs/min/  Std_dev  Std_dev  JTI
Forked  Time     SysTime UTime   Minute     Child      Time     Percent 
1       0.07     0.03    0.03    87428.57   87428.57   0.00     0.00     100  
3       0.17     0.27    0.23    108000.00  36000.00   0.00     0.00     99   
5       0.20     0.49    0.46    153000.00  30600.00   0.01     6.19     93   
7       0.29     0.92    0.97    147724.14  21103.45   0.01     4.04     95   
9       0.36     1.40    1.75    153000.00  17000.00   0.01     2.70     97   
Max Jobs per Minute 153000.00

stack:

REAIM Workload
Times are in seconds - Child times from tms.cstime and tms.cutime

Num     Parent   Child   Child  Jobs per   Jobs/min/  Std_dev  Std_dev  JTI
Forked  Time     SysTime UTime   Minute     Child      Time     Percent 
1       0.07     0.04    0.03    87428.57   87428.57   0.00     0.00     100  
3       0.18     0.30    0.22    102000.00  34000.00   nan      nan      -2147483648 
5       0.21     0.52    0.50    145714.29  29142.86   0.00     1.98     98   
7       0.30     1.06    0.99    142800.00  20400.00   0.01     3.01     96   
9       0.36     1.59    1.55    153000.00  17000.00   0.01     2.85     97   
Max Jobs per Minute 153000.00

******************************************************************
tbench
******************************************************************
nostack
84.4926
85.2117
84.4926

mean 84.732300 stdev 0.338987

stack
84.871
84.9133
84.8563

mean 84.880200 stdev 0.024162



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