HI all,
cpuinfo -v yields (see file "cpuinfo.txt" ).
I noticed one interesting thing:
When preparing to catche the hang i opened the console and pre-typed "mdb -K"
to crash the system if needed to.
When the system hang i pressed <ENTER> but nothing happened. While digging
around in the core dump i found my "mdb -K":
ffffff1381a42e40 ffffff13a6594cc0 ffffff138192c310 1 60 0
PC: _resume_from_idle+0xf1 CMD: mdb -K
stack pointer for thread ffffff1381a42e40: ffffff008c643d30
[ ffffff008c643d30 _resume_from_idle+0xf1() ]
swtch+0x145()
cv_wait+0x61()
vmem_xalloc+0x635()
vmem_alloc+0x161()
segkmem_xalloc+0x90()
segkmem_alloc_vn+0xcd()
segkmem_zio_alloc+0x24()
vmem_xalloc+0x546()
vmem_alloc+0x161()
kmem_slab_create+0x81()
kmem_slab_alloc+0x5b()
kmem_cache_alloc+0x1fa()
zio_data_buf_alloc+0x2c()
arc_get_data_buf+0x18b()
arc_buf_alloc+0xa2()
arc_read_nolock+0x12f()
arc_read+0x75()
dbuf_read_impl+0x172()
dbuf_read+0xfe()
dmu_buf_hold_array_by_dnode+0x1c9()
dmu_buf_hold_array+0x6e()
dmu_read_uio+0x4d()
zfs_read+0x2d1()
fop_read+0x6b()
vn_rdwr+0x17f()
gexec+0x140()
exec_common+0x45c()
exece+0x1f()
_sys_sysenter_post_swapgs+0x149()
> ffffff1381a42e40::thread
ADDR STATE FLG PFLG SFLG PRI EPRI PIL INTR
ffffff1381a42e40 run 1000 104 3 60 0 0 n/a
> ffffff1381a42e40::threadlist
ADDR PROC LWP CMD/LWPID
ffffff1381a42e40 ffffff13a6594cc0 ffffff138192c310 mdb/1
So i looked for the mdb process and found it on CPU ID #7:
I noticed "mdb -K" was in run queue on CPU ID 7:
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
7 ffffff1376a44540 1f 7 0 99 no no t-0 ffffff008b137c60 sched
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 60 ffffff1381a42e40 mdb
QUIESCED 60 ffffff13a35ee720 nfsd
EXISTS 60 ffffff1377474400 bash
ENABLE 60 ffffff008c1bec60 sched
59 ffffff13817ef540 nscd
59 ffffff13817fbc60 syslogd
58 ffffff1381a38720 smbd
So it seems mdb was blocked by sched (thread ffffff008b137c60); digging it
yields:
> ffffff008b137c60::findstack
stack pointer for thread ffffff008b137c60: ffffff008b1370d0
ffffff008b137120 intr_thread_prolog+0x2a()
ffffff008b137140 apic_setspl+0x5c()
ffffff008b137180 splr+0x55()
ffffff008b137c60 0x22d9fd9301c7()
Any ideas?
Message was edited by: ronnyegn
--
This message posted from opensolaris.org> ::cpuinfo -v
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
0 fffffffffbc3a080 1b 2 0 60 yes no t-1 ffffff008bfe0c60 sched
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 99 ffffff008bb81c60 sched
EXISTS 60 ffffff008cbd4c60 sched
ENABLE
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
1 ffffff13767fc080 1f 8 0 -1 no no t-17 ffffff008b526c60 (idle)
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 99 ffffff008bb69c60 sched
QUIESCED 60 ffffff008b915c60 sched
EXISTS 60 ffffff008b017c60 sched
ENABLE 60 ffffff008c877c60 sched
59 ffffff1377476760 sendmail
59 ffffff13817fe040 hald
59 ffffff13817fb8e0 syslogd
59 ffffff13a35f2a80 nsrexecd
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
2 ffffff13767f8000 1f 2 0 60 no no t-0 ffffff008b9cfc60
fsflush
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 59 ffffff1377475c80 inetd
QUIESCED 59 ffffff13a5bb5e80 iostat
EXISTS
ENABLE
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
3 ffffff1376a57ac0 1f 0 0 59 no no t-0 ffffff13817e7520 utmpd
|
RUNNING <--+
READY
QUIESCED
EXISTS
ENABLE
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
4 ffffff1376a52580 1f 3 0 -1 no no t-0 ffffff008b775c60 (idle)
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 60 ffffff008b631c60 sched
QUIESCED 60 ffffff008b34cc60 sched
EXISTS 60 ffffff008cbecc60 sched
ENABLE
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
5 ffffff1376a51080 1f 7 0 99 no no t-0 ffffff008b131c60 sched
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 60 ffffff008cbe0c60 sched
QUIESCED 60 ffffff008b01dc60 sched
EXISTS 59 ffffff13a35fab00 smbd
ENABLE 59 ffffff1377475900 ntpd
59 ffffff1381a42ac0 devfsadm
59 ffffff13a36043c0 smbd
59 ffffff13a5bb3000 fmd
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
6 ffffff1376a4ba80 1f 2 0 59 no no t-0 ffffff13a5bb81e0 intrd
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 59 ffffff13817e7c20 nscd
QUIESCED 59 ffffff1376b378a0 svc.configd
EXISTS
ENABLE
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC
7 ffffff1376a44540 1f 7 0 99 no no t-0 ffffff008b137c60 sched
| |
RUNNING <--+ +--> PRI THREAD PROC
READY 60 ffffff1381a42e40 mdb
QUIESCED 60 ffffff13a35ee720 nfsd
EXISTS 60 ffffff1377474400 bash
ENABLE 60 ffffff008c1bec60 sched
59 ffffff13817ef540 nscd
59 ffffff13817fbc60 syslogd
58 ffffff1381a38720 smbd
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