| Date: Wed, 8 May 2002 15:50:01 +0100
| From: "Laur Ivan" <Laur.Ivan at corvil.com>
| Hmm. Zillions of threads are usually a bad thing :) I'd go for
| multiplexing: rather than having(/creating) a thread for each request,
| get a limited (apache style..?) number of threads, each handling
| requests from a pool. It should greatly reduce the number of threads
| you actually need to create.
"how bad" zillions of threads are depends on the HW (CPU
and caching), SW (OS and run-time libs), and duty cycle of
the threads --- at least. yes, generally, on most *ix systems
I'd avoid zillions of executing threads (esp. if the threads
are kernel-scheduled); but that needn't always apply on
some RTOS/microkernel systems, and may not apply in some
cases on specific HW platforms.
however, from reading between the lines, I suspect the person
who first raised this topic has no choice in the matter; the
HW is a given, the application is zillion-threaded, and is
not in that person's power to modify / request-to-be-modified
(at least within an acceptable time-frame). my apologies if
my guessing is wrong here .....
I must wonder, which such a large number of threads, just
which Linux limit is being hit, which other limits might
also be hit, and which of the limits are really hard?
Innovative, very experienced, Unix and | Brian Foster Dublin, Ireland
Chorus (embedded RTOS) kernel internals | e-mail: blf at utvinternet.ie
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