[mdb-discuss] is ::cat limited in the number of input lines

[Jonathan Adams]

On Wed, Mar 15, 2006 at 01:16:37PM -0800, Michael E. Corcoran wrote:
> I have a corefile I'm looking at and wanted to do some processing of output 
> and then feed that back into mdb, but I'm getting this odd error:
> 
> > ::cat headt | ::eval .-40=K | ::print vmem_seg_t
> mdb: syntax error on line 2 of (pipeline) near "\n"
...
> > *kmem_oversize_arena::walk vmem_alloc | ::print -ad vmem_seg_t vs_timestamp 
> > ! sort -tt -k4n,4n | cut -d' ' -f1 > t.sorted
> > ::cat t.sorted | ::eval .-40=K | ::vmem_seg -v ! cat > vmem_sorted


The error is actually not from the ::cat, but from the ::eval.  The appropriate
tool to use in this case is '::map':

> ::cat /tmp/t.sorted | ::map '.-40' | ::vmem_seg -v
            ADDR TYPE            START              END             SIZE
                                THREAD        TIMESTAMP                 
     3000005cd10 ALLC      30009fac000      30009fb4198            33176
                               180e000        7bfeb81ef
                 vmem_seg_alloc+0x1e8
                 vmem_xalloc+0x8c4
                 vmem_alloc+0x238
                 kmem_alloc+0xfc
                 kobj_zalloc+8
                 init_devnamesp+0x64
...

Cheers,
- jonathan

-- 
Jonathan Adams, Solaris Kernel Development