Re: systat -vm output showing negative total virtual memory

Ruslan Ermilov wrote:
sysctl(8) knows that t_vm is in bytes, but for the other stats
it thinks they are in pages. "systat -vm" thinks they are all
in bytes. Here's a fix:

Thanks!, I applied your patch to RELENG_6


# sysctl vm.vmtotal ; ./sysctl vm.vmtotal
vm.vmtotal:
System wide totals computed every five seconds: (values in kilobytes)
===============================================
Processes: (RUNQ: 1 Disk Wait: 0 Page Wait: 0 Sleep: 45)
Virtual Memory: (Total: 797461K, Active 92512K)
Real Memory: (Total: 3327992K Active 48124K)
Shared Virtual Memory: (Total: 11856K Active: 7772K)
Shared Real Memory: (Total: 7644K Active: 5364K)
Free Memory Pages: 145964K

vm.vmtotal:
System wide totals computed every five seconds: (values in kilobytes)
===============================================
Processes: (RUNQ: 1 Disk Wait: 0 Page Wait: 0 Sleep: 45)
Virtual Memory: (Total: 797461K, Active 22K)
Real Memory: (Total: 3327992K Active 48128K)
Shared Virtual Memory: (Total: 2K Active: 1K)
Shared Real Memory: (Total: 7644K Active: 5364K)
Free Memory Pages: 145964K


22K active VM and 1K shared? Seems pretty low to me...

Here's the systat -vm output

Mem:KB REAL VIRTUAL
Tot Share Tot Share Free
Act 48384 5424 92800 7844 145692 count
All 3328264 7704-1028565k 11928 pages


Mem:KB REAL VIRTUAL
Tot Share Tot Share Free
Act 48464 5372 22 1 145692 count
All 3328264 7652 797461 2 pages


The total value seems more sane, but I doubt the active total value.
top(1) says

106 processes: 3 running, 80 sleeping, 1 zombie, 22 waiting
CPU states: 8.9% user, 0.0% nice, 11.4% system, 0.8% interrupt, 78.9% idle
Mem: 48M Active, 2834M Inact, 239M Wired, 133M Cache, 112M Buf, 4680K Free
Swap: 1024M Total, 36K Used, 1024M Free

Yes, the system is totally idle, that may explain the values above. If
your fix is correct (sorry, but I'm not in a position to judge your
work), would it be possible to have a quick MFC to RELENG_6 and
RELENG_6_2?


Ulrich Spoerlein
--
A: Yes.
Q: Are you sure?
A: Because it reverses the logical flow of conversation.
Q: Why is top posting frowned upon?
_______________________________________________
freebsd-stable@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscribe@xxxxxxxxxxx"

Relevant Pages