Markus Baertschi wrote:
Drew Zerdecki wrote:
Is 512 MB enough for P4 3Ghz system (combined frontend/backend) with a
PVR350 and PVR250? Thanks for your help.
I've got only 128M (it is difficult to find PC100 memory for my old box)
and
the only time I would really need more memory is for compiling mythtv.
Somehow
the mythtv c++ stuff is very memory consuming during compilation...
I have two machines running with *no* swap files enabled:
*main frontend/backend machine: 384 MB RAM
This machine runs flawlessly for several server tasks next to
mythbackend+mythfrontend, compile jobs, etc.
*2nd frontend: 128 MB RAM
This machine now and then crashes because it runs out of RAM. It
hardly runs any service, about 3MB is used for the shared memory
graphics card. Memory usage after startup is indicated below. The real
problem comes from some plugins using a large amount of memory for
certain tasks (from memory: scanning for new music and videos), which
is actually a pity. I tried to track this down (using valgrind with
massif) and it seems that it is actually not real application logic or
buffers that are responsible for peak memory usage but some QT image
and string manipulation functions.
Mem: 125544k total, 121964k used, 3580k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 46364k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ Command
488 root 5 -10 84004 17m 1744 S 0.0 14.1 0:04.61 XFree86
525 mythtv 9 0 50440 49m 12m S 0.0 40.2 0:05.35 mythfront
527 mythtv 9 0 50440 49m 12m S 0.0 40.2 0:00.00 mythfront
528 mythtv 9 0 50440 49m 12m S 0.0 40.2 0:00.00 mythfront
530 mythtv 9 0 50440 49m 12m S 0.0 40.2 0:00.00 mythfront
478 root 9 0 3316 3312 3092 S 0.0 2.6 0:00.06 gdm
472 root 9 0 2896 2892 2744 S 0.0 2.3 0:00.01 gdm
500 paul 9 0 2088 2084 1912 S 0.0 1.7 0:00.01 sshd
502 paul 9 0 2064 2064 1236 S 0.0 1.6 0:00.30 bash
[etc...............................................................]
--
Paul
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