[squid-users] AUFS vs. DISKS

[FredB]

.
> 
> Based on previous answers, diskd is for freebsd with 1 process only,
> when
> the ufs/aufs are with many processes.
> Also, as you said, it seems the diskd process was modified with the
> latest
> builds...
> 

I don't know about freebsd, diskd is a separate process with a light consumption
Top with 3000 simultaneous users (2 x caches 250 Go full) 

top - 15:10:45 up 65 days, 43 min,  3 users,  load average: 1,88, 1,83, 2,14
Tasks: 3194 total,   3 running, 3191 sleeping,   0 stopped,   0 zombie
%Cpu(s): 11,5 us,  7,8 sy,  0,0 ni, 68,8 id,  8,2 wa,  0,0 hi,  3,7 si,  0,0 st
KiB Mem:  33006984 total, 32338408 used,   668576 free,  4006796 buffers
KiB Swap:  1952764 total,    15640 used,  1937124 free,  4555212 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND                                                                                                 
 1729 squid     20   0 14,7g  14g 4924 R  70,5 46,3 127:53.77 squid                                                                                                   
21011 e2guardi  20   0 56288  18m 1180 S  14,2  0,1  18:20.66 e2guardian                                                                                              
14004 root      20   0 25992 4392 1180 R   3,2  0,0   0:00.41 top                                                                                                     
 1849 squid     20   0 22864 1360 1144 S   1,3  0,0   2:24.98 diskd                                                                                                   
 1850 squid     20   0 22864 1360 1144 S   1,3  0,0   2:20.31 diskd 

As you can see 2 caches = two process. 
And also 3000 e2 process

With this configuration and aufs, and no change, the load is 4/5 and the CPU 80/90, global response time still the same 
I don't know if aufs is more fast than disk to delivers the files but enough for me