Dear all
two days ago i upgraded from 15.10 and immediatly i experienced a great
loss of performance. Loading a 8 Mega database taked more than 10
minutes. Computing was very slow.

Instead the speed of loading of the same database in another pc less
powerful is very fast.

Initially i thought the reason was an upgrade failure so today i
installed few times a fresh version of 16.04, but with no effect.

I was unable (i had some trouble in compiling the .tar ) to try if the
2016c version was working.

I cant downgrade to 14.04 because i need an higher version of gretl and but i cant work with this trouble.

So - really - any help or suggestion is very appreciated.

THX

Here my hardware.

...
    width: 64 bits
    capabilities: smbios-2.7 dmi-2.7 vsyscall32
    configuration: boot=normal chassis=desktop family=To Be
Filled By
O.E.M. sku=To Be Filled By O.E.M. uuid=00020003-0004-0005-0006-
000700080009
  *-core
       description: Motherboard
       product: FM2A68M-DG3+
       vendor: ASRock
       physical id: 0
       serial: M80-4C012600570
     *-firmware
          description: BIOS
          vendor: American Megatrends Inc.
          physical id: 0
          version: P1.10
          date: 11/07/2014
          size: 64KiB
          capacity: 8128KiB
          capabilities: pci upgrade shadowing cdboot bootselect
socketedrom edd int13floppy1200 int13floppy720 int13floppy2880
int5printscreen int9keyboard int14serial int17printer acpi usb
biosbootspecification uefi
     *-cache:0
          description: L1 cache
          physical id:
8
          slot: L1 CACHE
          size: 256KiB
          capacity: 256KiB
          clock: 1GHz (1.0ns)
          capabilities: pipeline-burst internal write-back unified
          configuration: level=1
     *-cache:1
          description: L2 cache
          physical id: 9
          slot: L2 CACHE
          size: 4MiB
          capacity: 4MiB
          clock: 1GHz (1.0ns)
          capabilities: pipeline-burst internal write-back unified
          configuration: level=2
     *-memory
          description: System Memory
          physical id: 10
          slot: System board or motherboard
          size: 8GiB
        *-bank:0
             description: DIMM DDR3
Synchronous 1600 MHz (0,6 ns)
             product: 9905584-003.A00LF
             vendor: Kingston
             physical id: 0
             serial: 9E3AB980
             slot: DIMM 0
             size: 4GiB
             width: 64 bits
             clock: 1600MHz (0.6ns)
        *-bank:1
             description: DIMM DDR3 Synchronous 1600 MHz (0,6 ns)
             product: 9905584-003.A00LF
             vendor: Kingston
             physical id: 1
             serial: 993AB980
             slot: DIMM 0
             size: 4GiB
             width: 64 bits
             clock: 1600MHz (0.6ns)
     *-cpu
          description: CPU
          product: AMD Athlon(tm) X4 860K Quad Core Processor
          vendor: Advanced Micro Devices [AMD]
          physical id: 18
          bus info: cpu@0
          version: AMD Athlon(tm) X4 860K Quad Core Processor
          slot: CPUSocket
          size: 1700MHz
          capacity: 3700MHz
          width: 64 bits
          clock: 100MHz
          capabilities: x86-64 fpu fpu_exception wp 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 pdpe1gb rdtscp constant_tsc rep_good
nopl nonstop_tsc extd_apicid aperfmperf eagerfpu pni pclmulqdq monitor
ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm
cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch
osvw ibs xop skinit wdt lwp fma4 tce
nodeid_msr tbm topoext
perfctr_core perfctr_nb bpext cpb hw_pstate vmmcall fsgsbase bmi1
xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean
flushbyasid decodeassists pausefilter pfthreshold cpufreq
          configuration: cores=4 enabledcores=4 threads=4
 ....

                 *-disk
                      description: SCSI Disk
                      product: STORAGE DEVICE
                      vendor: Generic
                      physical id: 0.0.0
                      bus info: scsi@1:0.0.0
                      logical name: /dev/sdb
                      version: 9451
                      capabilities: removable
                      configuration:
logicalsectorsize=512
sectorsize=512
                    *-medium
                         physical id: 0
                         logical name: /dev/sdb
        *-serial
             description: SMBus
             product: FCH SMBus Controller
             vendor: Advanced Micro Devices, Inc. [AMD]
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 16
             width: 32 bits
             clock: 66MHz
             configuration: driver=piix4_smbus latency=0
             resources: irq:0
...

     *-scsi
          physical id: 1
          logical name: scsi0
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: Samsung SSD 850
             physical id: 0.0.0
             bus info: scsi@0:0.0.0
             logical name: /dev/sda
             version: 1B6Q
             serial: S21PNSAFC79564N
             size: 232GiB (250GB)
             capabilities: partitioned partitioned:dos
             configuration: ansiversion=5 logicalsectorsize=512
sectorsize=512 signature=000845d5
           *-volume:0
                description: EXT4 volume
                vendor: Linux
                physical id: 1
                bus info: scsi@0:0.0.0,1
                logical name: /dev/sda1
                logical name: /
                version: 1.0
                serial: b0addab9-b440-4083-8d42-e693220508bf
                size: 224GiB
                capacity: 224GiB
                capabilities: primary bootable journaled
extended_attributes large_files huge_files dir_nlink extents ext4 ext2
initialized
                configuration: created=2016-08-01 23:16:08
filesystem=ext4 lastmountpoint=/target modified=2016-08-01 23:21:53
mount.fstype=ext4 mount.options=rw,relatime,errors=remount-
ro,data=ordered mounted=2016-08-01 23:16:09 state=mounted
           *-volume:1
                description: Extended partition
                physical id: 2
                bus info: scsi@0:0.0.0,2
                logical name: /dev/sda2
                size: 8113MiB
                capacity: 8113MiB
                capabilities: primary extended partitioned
partitioned:extended
              *-logicalvolume
                   description: Linux swap / Solaris partition
                   physical id: 5
                   logical name: /dev/sda5
                   capacity: 8113MiB
                   capabilities: nofs

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