[RC5] RC5 Client speed

[Ilmārs Lauberts]

Hey!

Have two identical Mac Quads - the same amount of RAM, HDD, the same  
system and client versions.
One of them is doing ~18Mkeys/sec per processor core (nice=0; 97-98%  
processor load):

"
[Sep 04 11:15:49 UTC] *Break* Shutting down...
[Sep 04 11:15:49 UTC] RC5-72 #d: Saved CB:59C08274:00000000:1*2^32  
(40.40% done)
                       0.00:01:36.37 - [18,016,540 keys/s]
[Sep 04 11:15:49 UTC] RC5-72 #c: Saved CB:59C08276:00000000:1*2^32  
(39.50% done)
                       0.00:01:34.27 - [18,023,661 keys/s]
[Sep 04 11:15:49 UTC] RC5-72 #b: Saved CB:59C08278:00000000:1*2^32  
(25.90% done)
                       0.00:01:02.22 - [17,882,627 keys/s]
[Sep 04 11:15:49 UTC] RC5-72 #a: Saved CB:59C08272:00000000:1*2^32  
(80.10% done)
                       0.00:03:16.45 - [17,521,105 keys/s]
[Sep 04 11:15:49 UTC] RC5-72: Summary: 5 packets (5.00 stats units)
                       0.00:05:44.79 - [43.18 Mkeys/s]
[Sep 04 11:15:49 UTC] RC5-72: 111 packets (111.00 stats units) are in
                       buff-in.r72
[Sep 04 11:15:49 UTC] RC5-72: 271 packets (271.00 stats units) are in
                       buff-out.r72
[Sep 04 11:15:49 UTC] Shutdown complete.

dnetc v2.9012-497-CTR-06010617 for Mac OS X (Darwin 8.7.0).
Using email address (distributed.net ID) '...'

[Sep 04 11:23:18 UTC] Automatic processor detection found 4 processors.
[Sep 04 11:23:18 UTC] Loading crunchers with work...
[Sep 04 11:23:18 UTC] Automatic processor type detection found
                       a PowerPC 970MP (G5) processor.
[Sep 04 11:23:18 UTC] RC5-72: using core #4 (KKS 7450).
"


Second one is barely hitting 10Mkeys (nice=0; 97-98% processor load):

"
[Sep 04 11:51:11 UTC] *Break* Shutting down...
[Sep 04 11:51:11 UTC] RC5-72 #d: Saved CB:5A70F6C4:00000000:1*2^32  
(80.50% done)
                       0.00:06:08.67 - [9,388,241 keys/s]
[Sep 04 11:51:11 UTC] RC5-72 #c: Saved CB:5A70F6CA:00000000:1*2^32  
(80.50% done)
                       0.00:06:08.62 - [9,386,949 keys/s]
[Sep 04 11:51:11 UTC] RC5-72 #b: Saved CB:5A70F6B8:00000000:1*2^32  
(82.50% done)
                       0.00:06:17.78 - [9,388,857 keys/s]
[Sep 04 11:51:11 UTC] RC5-72 #a: Saved CB:5A70F6BF:00000000:1*2^32  
(82.30% done)
                       0.00:06:16.74 - [9,384,131 keys/s]
[Sep 04 11:51:11 UTC] RC5-72: Summary: 8 packets (8.00 stats units)
                       0.00:18:09.24 - [24.61 Mkeys/s]
[Sep 04 11:51:11 UTC] RC5-72: 294 packets (294.00 stats units) are in
                       buff-in.r72
[Sep 04 11:51:11 UTC] RC5-72: 84 packets (84.00 stats units) are in
                       buff-out.r72
[Sep 04 11:51:11 UTC] Shutdown complete.

dnetc v2.9012-497-CTR-06010617 for Mac OS X (Darwin 8.7.0).
Using email address (distributed.net ID) '...'

[Sep 04 11:52:21 UTC] Automatic processor detection found 4 processors.
[Sep 04 11:52:21 UTC] Loading crunchers with work...
[Sep 04 11:52:21 UTC] Automatic processor type detection found
                       a PowerPC 970MP (G5) processor.
[Sep 04 11:52:21 UTC] RC5-72: using core #4 (KKS 7450).
"

Both show ~18Mkeys while benchmarking.

Where is the problem? Bug?



Ilmārs
#99