Have about 10 workstations, in office running all the time, and nightly use of a 44 CPU cluster, which is mostly Opteron 248s and Xeon 3.08ghz CPUs.
here is a "./server -list | grep %" of the cluster... BTW: I run 4 instances each on the dual cluster machines to take advantage of the hyper threading. You gotta love how well the software works in a Linux Cluster, I just issue one command to start and stop them all.
[ringdahl@master ringdahl]$ ./server -list | grep %
j433-1uou-q1.log xeon4 15:32 20-JUN-04 15:16 2-JUL-04 05 99% 42 31
j462-1a30-q2.log xeon4-1 21:26 20-JUN-04 15:15 2-JUL-04 05 76% 41 158
j1648-1uou-q1.log xeon4-3 14:38 2-JUL-04 15:15 2-JUL-04 05 17%104 23
j1669-1a30-q2.log opt6-2 01:34 3-JUL-04 07:38 14-JUL-04 05 98% 85 680
j2099-1uou-q1.log bopt2-1 03:39 10-JUL-04 07:37 14-JUL-04 05 96% 51 11
j2184-1a30-q2.log bopt2 06:14 6-JUL-04 07:38 14-JUL-04 05 77% 52 382
j2342-1lee-q1.log bopt3-1 19:39 8-JUL-04 07:37 14-JUL-04 05 52% 5 120
j2368-1a30-q2.log opt3-1 04:07 9-JUL-04 07:38 14-JUL-04 05 93% 23 356
j2386-1a30-q2.log opt5-2 07:21 11-JUL-04 07:38 14-JUL-04 05 88% 83 433
j2402-1a30-q2.log opt3 20:00 9-JUL-04 07:38 14-JUL-04 05 97% 24 607
j2440-1lee-q1.log opt2-3 03:38 10-JUL-04 07:38 14-JUL-04 05 33% 78 92
j2456-1uou-q1.log bxeon5 04:46 11-JUL-04 07:38 14-JUL-04 05 99% 18 263
j2472-1lee-q1.log bopt2-2 10:57 10-JUL-04 07:39 14-JUL-04 05 46% 57 73
j2473-1lee-q1.log bopt3-2 10:55 10-JUL-04 07:36 14-JUL-04 05 90% 59 126
j2474-1lee-q1.log bopt3-3 10:55 10-JUL-04 07:36 14-JUL-04 05 70% 60 81
j2477-1lee-q1.log bxeon4-3 22:13 13-JUL-04 07:38 14-JUL-04 05 41% 72 50
j2527-1uou-q1.log bopt2-3 18:02 11-JUL-04 07:39 14-JUL-04 05 95% 58 2
j2529-1uou-q1.log bopt5-2 21:00 13-JUL-04 07:39 14-JUL-04 05 67% 63 0
j2533-1uou-q1.log opt7-2 21:03 10-JUL-04 07:39 14-JUL-04 05 88% 87 169
j2554-1a30-q2.log bopt5-3 17:38 11-JUL-04 07:38 14-JUL-04 05 98% 64 238
j2557-1a30-q2.log bxeon4-2 04:46 11-JUL-04 07:38 14-JUL-04 05 80% 71 550
j2566-1a30-q2.log bxeon4 19:34 12-JUL-04 07:38 14-JUL-04 05 81% 16 202
j2578-1a30-q2.log bxeon5-2 04:10 12-JUL-04 07:38 14-JUL-04 05 73% 73 201
j2585-1a30-q2.log xeon6-3 10:57 11-JUL-04 07:39 14-JUL-04 05 99% 98 281
j2588-1a30-q2.log master 02:47 13-JUL-04 07:38 14-JUL-04 05 70% 0 327
j2595-1a30-q2.log xeon2-1 17:37 11-JUL-04 07:38 14-JUL-04 05 88% 37 145
j2600-1a30-q2.log xeon6-1 07:38 14-JUL-04 05 90% 45 467
j2604-1a30-q2.log xeon8 23:11 12-JUL-04 07:39 14-JUL-04 05 98% 50 276
j2606-1a30-q2.log bopt4-2 22:37 13-JUL-04 05 98% 61 258
j2629-1lee-q1.log bxeon2-1 22:39 11-JUL-04 00:55 14-JUL-04 05 85% 13 173
j2630-1lee-q1.log bxeon2 22:39 11-JUL-04 07:39 14-JUL-04 05 64% 14 156
j2632-1uou-q1.log opt6-1 00:57 12-JUL-04 07:38 14-JUL-04 05 92% 29 13
j2643-1uou-q1.log master-2 22:39 11-JUL-04 07:38 14-JUL-04 05 80% 53 22
j2645-1uou-q1.log xeon1-2 04:03 13-JUL-04 07:38 14-JUL-04 05 92% 55 27
j2649-1uou-q1.log bxeon2-2 23:33 12-JUL-04 07:38 14-JUL-04 05 97% 67 285
j2655-1uou-q1.log xeon3-3 22:39 11-JUL-04 07:38 14-JUL-04 05 97% 94 227
j2657-1uou-q1.log xeon6-2 07:38 14-JUL-04 05 86% 97 188
j2665-1uou-q1.log bopt5 03:46 12-JUL-04 07:39 14-JUL-04 05 91% 10 46
j2666-1uou-q1.log bxeon4-1 03:47 12-JUL-04 07:39 14-JUL-04 05 96% 15 70
j2668-1uou-q1.log opt4-1 03:14 13-JUL-04 07:39 14-JUL-04 05 88% 25 5
j2680-1uou-q1.log opt4-3 23:02 12-JUL-04 07:38 14-JUL-04 05 89% 82 18
j2733-1eup-q1.log opt6 06:55 14-JUL-04 07:38 14-JUL-04 05 61% 30 0
j2749-1a30-q2.log opt2-2 02:53 13-JUL-04 07:39 14-JUL-04 05 84% 77 389
j2752-1a30-q2.log xeon2-3 02:53 13-JUL-04 07:38 14-JUL-04 05 65% 92 419
j2754-1a30-q2.log xeon7-2 02:53 13-JUL-04 07:38 14-JUL-04 05 77% 99 294
j2755-1a30-q2.log xeon7-3 02:53 13-JUL-04 07:39 14-JUL-04 05 89%100 224
j2758-1a30-q2.log opt2 04:28 14-JUL-04 07:38 14-JUL-04 05 95% 22 29
j2759-1a30-q2.log xeon3-1 03:20 13-JUL-04 07:39 14-JUL-04 05 86% 39 395
j2760-1a30-q2.log master-1 07:34 13-JUL-04 07:38 14-JUL-04 05 41% 1 109
j2761-1a30-q2.log bopt3 07:32 13-JUL-04 07:37 14-JUL-04 05 57% 6 54
j2770-1a30-q2.log xeon1 07:38 14-JUL-04 05 92% 36 336
j2805-1lee-q1.log bopt4-1 19:26 13-JUL-04 22:36 13-JUL-04 05 12% 7 18
j2806-1lee-q1.log bopt4 19:26 13-JUL-04 22:36 13-JUL-04 05 54% 8 60
j2807-1lee-q1.log bopt5-1 04:29 14-JUL-04 07:39 14-JUL-04 05 3% 9 6
j2808-1lee-q1.log bxeon1-1 04:28 14-JUL-04 07:39 14-JUL-04 05 11% 11 28
j2813-1lee-q1.log opt4 04:28 14-JUL-04 07:39 14-JUL-04 05 20% 26 20
j2815-1lee-q1.log opt7-1 01:01 14-JUL-04 07:38 14-JUL-04 05 24% 31 31
j2816-1lee-q1.log opt7 06:54 14-JUL-04 07:38 14-JUL-04 05 5% 32 6
j2818-1lee-q1.log opt8 04:28 14-JUL-04 07:38 14-JUL-04 05 11% 34 10
j2822-1lee-q1.log xeon3 04:28 14-JUL-04 07:39 14-JUL-04 05 41% 40 11
j2824-1lee-q1.log xeon7-1 04:28 14-JUL-04 07:39 14-JUL-04 05 19% 47 15
j2830-1uou-q1.log bopt4-3 19:27 13-JUL-04 22:37 13-JUL-04 05 3% 62 5
j2831-1uou-q1.log bxeon1-3 04:28 14-JUL-04 07:38 14-JUL-04 05 68% 66 66
j2833-1uou-q1.log bxeon2-3 04:28 14-JUL-04 07:39 14-JUL-04 05 34% 68 10
j2835-1uou-q1.log bxeon3-3 04:28 14-JUL-04 07:38 14-JUL-04 05 58% 70 24
j2839-1uou-q1.log bxeon6-3 04:28 14-JUL-04 07:39 14-JUL-04 05 56% 76 9
j2841-1uou-q1.log opt3-2 04:28 14-JUL-04 07:39 14-JUL-04 05 40% 79 1
j2844-1uou-q1.log opt4-2 04:28 14-JUL-04 07:38 14-JUL-04 05 81% 81 1
j2845-1uou-q1.log opt5-3 04:28 14-JUL-04 07:38 14-JUL-04 05 58% 84 7
j2846-1uou-q1.log opt6-3 04:28 14-JUL-04 07:38 14-JUL-04 05 51% 86 81
j2847-1uou-q1.log opt7-3 06:32 14-JUL-04 07:39 14-JUL-04 05 21% 88 21
j2848-1uou-q1.log opt8-2 04:28 14-JUL-04 07:38 14-JUL-04 05 51% 89 4
j2849-1uou-q1.log opt8-3 04:28 14-JUL-04 07:39 14-JUL-04 05 68% 90 37
j2850-1uou-q1.log xeon1-3 04:28 14-JUL-04 07:39 14-JUL-04 05 60% 91 124
j2851-1uou-q1.log xeon3-2 04:29 14-JUL-04 07:37 14-JUL-04 05 95% 93 0
All Jobs: 2194 completed ( 85%) 219 failed 64 queued 0 running 75 stalled