[andydread]

Not sure if this helps but we are having the same problem with 4.5.5 OS
running on Ubuntu 6 on a 4core 2S Opteron server with 6GB ram. I would think this machine should be decent enough to load the database under 2 minutes but not sure why it takes so long to load.

Output of top with zimbra running properly (50 users)

Tasks: 202 total, 1 running, 201 sleeping, 0 stopped, 0 zombie
Cpu0 : 4.7% us, 3.3% sy, 0.0% ni, 88.0% id, 4.0% wa, 0.0% hi, 0.0% si
Cpu1 : 4.7% us, 2.3% sy, 0.0% ni, 93.0% id, 0.0% wa, 0.0% hi, 0.0% si
Cpu2 : 2.0% us, 2.7% sy, 0.0% ni, 95.3% id, 0.0% wa, 0.0% hi, 0.0% si
Cpu3 : 3.7% us, 2.3% sy, 0.0% ni, 94.0% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 6233236k total, 5137252k used, 1095984k free, 237728k buffers
Swap: 6225912k total, 172k used, 6225740k free, 3334916k cached


Output from /proc/cpuinfo ( CPU 3 - 4th CPU)

processor : 3
vendor_id : AuthenticAMD
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 2210
stepping : 2
cpu MHz : 1800.174
cache size : 1024 KB
physical id : 1
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy
bogomips : 3600.14