[j-nsp] 15.1 on MX104

[Olivier Benghozi]

Hi Josh,

There's no 15.1R6 yet, but 15.1R4 (or 15.1F6 for Features on steroids release train).

There no new Freebsd on PPC platform (so no SMP, no new partitioning scheme and so on).
Since 15.1 on PPC is not "Junos OS with upgraded FreeBSD", I suppose there's just no change about memory allocation on MX80/104.


Some examples on two MX104 updated to 15.1R4 here:

obenghozi at rg-co-01-bodir1-re0> show system processes extensive 
last pid: 28137;  load averages:  0.10,  0.04,  0.01  up 14+17:00:55    17:24:04
140 processes: 3 running, 115 sleeping, 22 waiting

Mem: 495M Active, 52M Inact, 142M Wired, 277M Cache, 112M Buf, 2904M Free
Swap: 1025M Total, 1025M Free


obenghozi at rg-co-01-bodir1-re0> show system memory                 
System memory usage distribution:
       Total memory: 4034560 Kbytes (100%)
    Reserved memory:   71456 Kbytes (  1%)
       Wired memory:  145052 Kbytes (  3%)
      Active memory:  506620 Kbytes ( 12%)
    Inactive memory:   52880 Kbytes (  1%)
       Cache memory:  284128 Kbytes (  7%)
        Free memory: 2973688 Kbytes ( 73%)
Memory disk resident memory:   67932 Kbytes



obenghozi at rg-co-01-rhesfr1-re0> show system processes extensive 
last pid: 13111;  load averages:  0.08,  0.10,  0.03  up 5+02:40:30    17:23:41
140 processes: 2 running, 116 sleeping, 22 waiting

Mem: 482M Active, 51M Inact, 103M Wired, 394M Cache, 112M Buf, 2840M Free
Swap: 1025M Total, 1025M Free


obenghozi at rg-co-01-rhesfr1-re0> show system memory                 
System memory usage distribution:
       Total memory: 4034560 Kbytes (100%)
    Reserved memory:   71456 Kbytes (  1%)
       Wired memory:  105404 Kbytes (  2%)
      Active memory:  492668 Kbytes ( 12%)
    Inactive memory:   51892 Kbytes (  1%)
       Cache memory:  403340 Kbytes (  9%)
        Free memory: 2908996 Kbytes ( 72%)
Memory disk resident memory:   57644 Kbytes


regards,
Olivier


> Le 3 août 2016 à 17:14, Josh Baird <joshbaird at gmail.com> a écrit :
> 
> I have a MX104 running 13.3R6.5 that is hitting PR1080566.  I'm looking to
> either upgrade to 14.2R6 or 15.1R6.  I know that a new FreeBSD kernel is
> introduced in 15.1, but based on the PPC architecture of the RE-MX-104, I
> don't believe I will be able to take advantage of the new kernel so I won't
> get the key features like SMP, etc [1].  Is this a correct statement?
> 
> In addition, it appears that in versions prior to 15.1, the MX104 is able
> to utilize the full 4GB on a 32bit platform due to the way that swap pages
> were counted as part of the memory file system partition.  Starting in
> 15.1, this has changed and I will only get 3Gb usable [1].  This box will
> be taking three full tables, so I think having the additional 1Gb of memory
> will be beneficial.
> 
> Given that the MX104 cannot really take advantage of the new FreeBSD kernel
> and associated features (SMP, etc) and that total available memory will be
> decreased, I'm thinking of upgrading to 14.2R6 instead.  What are
> everyone's thoughts?
> 
> [1] Page 17 -
> http://www.juniper.net/techpubs/en_US/junos15.1/information-products/pathway-pages/software-installation-and-upgrade/software-installation-and-upgrade.pdf