[Bug 248417] top(1): ARC info is displayed on an UFS only system with a 2kb value

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248417

            Bug ID: 248417
           Summary: top(1): ARC info is displayed on an UFS only system
                    with a 2kb value
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs at FreeBSD.org
          Reporter: gbe at FreeBSD.org

After some time of stressing the system I see an ARC info displayed via top(1)
with a value of "2048B Uncompressed". The system is UFS only, but has loaded
the zfs.ko. An example output is the following,

--------------------------------------------------------------------------
last pid: 67230;  load averages:  1.43,  1.37,  1.51                           
                                                      up 3+01:30:32  19:51:53
43 processes:  3 running, 40 sleeping
CPU: 46.7% user,  0.0% nice,  2.1% system,  0.1% interrupt, 51.1% idle
Mem: 221M Active, 16M Inact, 756K Laundry, 238M Wired, 97M Buf, 426M Free
ARC:
     2048B Uncompressed
Swap: 2048M Total, 86M Used, 1961M Free, 4% Inuse

  PID USERNAME    THR PRI NICE   SIZE    RES STATE    C   TIME    WCPU COMMAND
67230 root          1  92    0   211M   155M CPU3     3   0:11  98.50% c++
-target aarch64-unknown-freebsd13.0
--sysroot=/tank/nfs_public/tiny/obj/tank/nfs_p
66978 root          1  92    0   235M   167M CPU2     2   0:11  97.65% c++
-target aarch64-unknown-freebsd13.0
--sysroot=/tank/nfs_public/tiny/obj/tank/nfs_p

--------------------------------------------------------------------------

The system is a -CURRENT from the 29th of July on arm64 (RPi4b). The uname -a
output is the following,

--------------------------------------------------------------------------
FreeBSD tiny.0xfce3.net 13.0-CURRENT FreeBSD 13.0-CURRENT #22
9439cdbfcc6-c270217(master): Wed Jul 29 17:45:44 CEST 2020    
root at tiny.0xfce3.net:/tank/nfs_public/tiny/obj/tank/nfs_public/tiny/src/arm64.aarch64/sys/GENERIC-TCP
 arm64
--------------------------------------------------------------------------

-- 
You are receiving this mail because:
You are the assignee for the bug.