FYI: Serious Design Flaws

[John L. Males]

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Hello,

With all due respect going forward I will not use, nor suggest
others use lzip.   This is because of serious design issues
that cause extremely serious consequences.

I have no desire to explain, not document the design issues.  I
would ave thought given the very careful comparison and
explanations of lzip vs other compression formats such serious
design issues with extremely serious consequences would not
have occurred.  In my opinion what I have discovered is basic
and never expected would occur.


John L. Males
Toronto, Ontario
Canada
17 December 2019 13:36 -0500 EST


================================================================

2019-12-17 18:29:12+0000-UTC Time: 1576607352 PC/System time

17 Dec 18:29:12 ntpdate[68771]: ntpdate 4.2.8p12-a (1)

17 Dec 18:29:28 ntpdate[69811]: step time server 132.246.11.227
offset 0.000730 sec

FreeBSD 11.3-STABLE FreeBSD 11.3-STABLE #0 r349903: Thu Jul 11
16:13:47 UTC 2019
address@hidden:/usr/obj/usr/src/sys/GENERIC 

(Work in progress alternative to Linux Kernel of its own right,
 Debian, and
 other Linux based Kernel distributions determined.)

Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz
Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz (1396.86-MHz K8-class
CPU) Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz (1396.86-MHz
K8-class CPU) Intel(R) Core(TM) i3-2367M CPU @ 1.40GHz
(1396.86-MHz K8-class CPU) Intel(R) Core(TM) i3-2367M CPU @
1.40GHz (1396.86-MHz K8-class CPU) Intel(R) Core(TM) i3-2367M
CPU @ 1.40GHz (1396.86-MHz K8-class CPU)

dev.cpu.0.temperature: 72.0C
dev.cpu.1.temperature: 72.0C
dev.cpu.2.temperature: 69.0C
dev.cpu.3.temperature: 69.0C
hw.acpi.thermal.tz0.temperature: 72.1C

vmstat -s:

430924149 cpu context switches
 12235827 device interrupts
  1906480 software interrupts
 38367446 traps
1053303864 system calls
       27 kernel threads created
     5592  fork() calls
     1898 vfork() calls
        0 rfork() calls
      917 swap pager pageins
     4814 swap pager pages paged in
      853 swap pager pageouts
    14735 swap pager pages paged out
     7937 vnode pager pageins
    88511 vnode pager pages paged in
      145 vnode pager pageouts
     2952 vnode pager pages paged out
       64 page daemon wakeups
 49885798 pages examined by the page daemon
        0 clean page reclamation shortfalls
  1146524 pages reactivated by the page daemon
   520614 copy-on-write faults
    11921 copy-on-write optimized faults
 24652584 zero fill pages zeroed
    10330 zero fill pages prezeroed
     1017 intransit blocking page faults
 40168382 total VM faults taken
    11115 page faults requiring I/O
        0 pages affected by kernel thread creation
   414800 pages affected by  fork()
    66642 pages affected by vfork()
        0 pages affected by rfork()
 34367610 pages freed
  3716500 pages freed by daemon
  9605069 pages freed by exiting processes
   389974 pages active
  2227195 pages inactive
   696854 pages in the laundry queue
   656280 pages wired down
    82463 pages free
     4096 bytes per page
 13843887 total name lookups
          cache hits (85% pos + 1% neg) system 0% per-directory
          deletions 0%, falsehits 0%, toolong 0%

Boot time : 1576542738

procs     memory        page                    disks
faults        cpu0     cpu1     cpu2     cpu3 r b w     avm
fre  flt  re  pi  po    fr   sr ad0 pa0   in    sy    cs us sy
id us sy id us sy id us sy id 0 0 0 32991836  329792  622  18
0   0   532  772   0   0  189 16297  6668 12  5 83 13  4 83 13
3 83 13  3 84

memory info:

real memory  = 17179869184 (16384 MB)
avail memory = 16495013888 (15730 MB)

last pid: 76532;  load averages:  0.72,  0.81,  0.72  up
0+17:57:10    18:29:28 56 processes:  1 running, 55 sleeping

Mem: 1524M Active, 8700M Inact, 2722M Laundry, 2564M Wired,
1552M Buf, 321M Free Swap: 48G Total, 52M Used, 48G Free

hw.physmem: 17053859840
hw.usermem: 14365560832
hw.realmem: 17179869184

             total       used       free     shared
buffers     cached Mem:      16210872    6972388
9238484          0          0          0 Swap:
50331644      53464   50278180

swapinfo:

Device          1K-blocks     Used    Avail Capacity
/dev/ada0s1b     50331644    53464 50278180     0%

vmstat:

procs     memory        page                    disks
faults         cpu r b w     avm     fre  flt  re  pi  po
fr   sr ad0 pa0   in    sy    cs us sy id 0 0 0 32991836
329776  622  18   0   0   532  772   0   0  189 16298  6668 13
4 83

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