On 29/03/2019 08:19, JunBeom Kim wrote:
Dear Sir,
I am still working with my customer using RTEMS based Qt Framework in
long time.
My customer are using memory allocation(malloc, realloc, free) with
frequency about small size(64, 128, 256, 512, 1024 byte, etc).
When RTEMS application is run in long time(for example: 6 hours),
malloc() or realloc() speed is slower due to memory fragmentation.
When I used other RTOS(eg: Nucleus, uC/OS, iTRON, etc) before, there
was almost same issue.
A first-fit allocator (which is used by RTEMS) is completely useless for
dynamic memory workloads. It is all right if you only allocate and never
free.
I used partition memory management for resolving this.
Is it correct method ?
We used TLSF in such situations:
https://github.com/mattconte/tlsf
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone : +49 89 189 47 41-16
Fax : +49 89 189 47 41-09
E-Mail : sebastian.hu...@embedded-brains.de
PGP : Public key available on request.
Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
_______________________________________________
users mailing list
users@rtems.org
http://lists.rtems.org/mailman/listinfo/users
