On 14-07-2014 12:20, shhuiw wrote:
> Will you please show us your application code, if possible? Or at
> least the mmap part.
The application code is proprietary, so I cannot disclose that.
For the mmap part, we are not doing mmap explicitly in our code, rather
the binary is linked to some dynamic library (here in the strace that I
took, it was oracle client). Application crashes while doing mmap for
the oracle library, here is the trace:
----- Call Stack Trace -----
calling call entry argument values in hex
location type point (? means dubious value)
-------------------- -------- --------------------
----------------------------
mmap(offset=33230848, len=2068480) failed with errno=12 for the file
./libclntsh.so.11.1
mmap(offset=33230848, len=2068480) failed with errno=12 for the file
./libclntsh.so.11.1
kpedbg_dmp_stack()+ call 556FC244 FFE3D814 ? 0 ?
219
kpeDbgCrash()+72 call 556F06E4 0 ? 5 ? FFE3D8E4 ?
A42C90 ?
4 ? FFE3D890 ?
56AA4FDF call 55701184 0 ? 5 ? 56E2AEFC ? 2
? 4 ?
50 ? 4 ? FFE3E8FD ?
56785C74 call 00000000 FFE3D8F4 ? 56F27E60 ?
<stripped> signal 00000000 B ? FFE3EDAC ? FFE3EE2C ?
PKc()+255
<stripped> call _ZN11CThreadDataC1E FFE3F2C8 ? FFE3F32E ? 13 ?
<stripped> PKc() 5720C14A ? 57144297 ? 0 ?
)+127
start_thread()+201 call 00000000 92ECDD8 ? FFE3FB70 ?
FFE3FB70 ? FFE3FB70 ?
clone()+94 call 00000000 FFE3FB70 ? 0 ? 0 ? 0
? 0 ?
0 ?
We have tried by reducing the footprint for our application by
decreasing the application caching of some data and see that the
application can come up properly until the VIRT in top command output is
about 2.8GB after which application starts crashing.
> So that we can figure out the testcase to reproduce on our boxes.
--
Thanks,
-aka
http://blog.amit-agarwal.co.in
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