[mythtv-users] ticket locking
Robin Gilks
g8ecj at gilks.org
Thu Jun 19 21:42:56 UTC 2008
> 2008/6/19 Udo van den Heuvel <udovdh at xs4all.nl>:
>>> As many others have said, there is a difference between
>>> virtual (VSZ) and resident (RSS). This is not as simple as
>>> "swapped out" and "swapped in".
>>
>> What does top report?
>> And even if there's not 400 megs in RAM, why does it get to big?
>> I still think it is not OK when a process starts at less than 10% grows
>> to 40% over time.
>
> The usage at the top of top reports total memory usage, including
> buffers and cache etc. In a idea world that should be close to 100% as
> possible with alot of memory in use as cache. My system is currently
> running at 787mb "In Use" with 560mb being used as cache.
>
> What you need to look at is the "RES" column for the mythbackend
> process. After a restart this morning its sitting at 56mb on my
> machine.
>
> <apologies for munged text>
>
> Tasks: 90 total, 1 running, 89 sleeping, 0 stopped, 0 zombie
> Cpu(s): 23.3%us, 2.7%sy, 0.0%ni, 73.0%id, 0.0%wa, 0.0%hi, 1.0%si,
> 0.0%st
> Mem: 1024672k total, 787092k used, 237580k free, 8k buffers
> Swap: 1004052k total, 135620k used, 868432k free, 560320k cached
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 5215 mysql 20 0 241m 25m 3368 S 10.0 2.6 280:17.48 mysqld
> 24129 mythtv 20 0 464m 56m 18m S 10.0 5.6 9:25.52 mythbackend
> 1 root 20 0 3720 488 456 S 0.0 0.0 0:15.89 init
> 2 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kthreadd
> 3 root 15 -5 0 0 0 S 0.0 0.0 0:01.04 ksoftirqd/0
Another data point - after running 23 days on a 1gig system that also runs
loads of other stuff - as you can see the virtual usage is well over 1gig
but of that mythbackend is actually only using 21megs
15583 root 20 0 347m 191m 4168 S 0.3 19.0 197:14.52 X
15919 g8ecj 20 0 258m 76m 20m S 1.0 7.6 716:22.23 mythfrontend
24879 mythtv 20 0 245m 21m 13m S 0.0 2.1 54:06.52 mythbackend
14173 g8ecj 20 0 241m 103m 26m S 0.0 10.2 73:16.77 firefox-bin
4490 g8ecj 20 0 219m 31m 11m S 0.0 3.1 11:59.99 java_vm
6991 mysql 20 0 158m 27m 4176 S 0.0 2.7 106:52.40 mysqld
--
Robin Gilks
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