Hi,
We're considering using LTTng as a logging / tracing solution for a
multi-process application, which spawns many sub-processes.
Our system is a 12-core x86 (6-core + HT). If I take 4 subbuffers of 1MB,
this means 4MB per process. As the number of processes rises, this becomes
prohibitive.
For example, we may need to support > 500 sub-processes ==> 500 * 4MB =
2GB - which is a bit too much.
Is there a way to tell LTTng to share the sub-buffers with forked
processes?
If not - how difficult would it be to add such support?
Thanks,
Amit Margalit
IBM XIV - Storage Reinvented
XIV-NAS Development Team
Tel. 03-689-7774
Fax. 03-689-7230
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