Date: Wed, 02 Sep 2009 15:32:34 +0200 From: Per olof Ljungmark <peo@intersonic.se> To: Bill Moran <wmoran@potentialtech.com> Cc: freebsd-questions@freebsd.org Subject: Re: memory usage displsy Message-ID: <4A9E73F2.2000908@intersonic.se> In-Reply-To: <20090902083348.40c21529.wmoran@potentialtech.com> References: <4A9D8057.8020307@intersonic.se> <20090901162931.d85ec256.wmoran@potentialtech.com> <20090901204147.GC2855@dan.emsphone.com> <4A9DB590.6080605@intersonic.se> <20090902083348.40c21529.wmoran@potentialtech.com>
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Bill Moran wrote:
> In response to Per olof Ljungmark <peo@intersonic.se>:
>
>> Dan Nelson wrote:
>>> In the last episode (Sep 01), Bill Moran said:
>>>> In response to Per olof Ljungmark <peo@intersonic.se>:
>>>>> What is a good way to find out how memory is used? Have a 6.4 box where
>>>>> memory is used by something but I fail to see what is using it - tried
>>>>> different switches to ps(1), tried the stat tools but a big chunk of
>>>>> memory does not show at all.
>>>>>
>>>>> A proper tool for analyzing memory usage "live", this is a production
>>>>> box?
>>>> I've always been able to get what I need from top. You can do -o res to
>>>> sort by resident memory usage, which helps.
>>> ps will sort by memory usage when given the -m flag. Also check ipcs -a to
>>> see if there are any sysv shared memory segments hanging arnound. If you
>>> don't see anything using the memory, where are you seeing that "something"
>>> is using it?
>>>
>> ...and here is top output after I stopped Postfix, slapd and Cyrus-IMAP.
>> Still over 3G Active.
>
> <snip>
>
> You did not sort by res and there are only 40 processes showing, which
> means your output is truncated and may have truncated the problematic
> process.
>
> Please use "top -o res" to get the output sorted by memory usage, or
> don't truncate the output (former preferred).
>
> Also, please provide the output of "ipcs -a"
>
There was no more processes...
ipcs -a
Message Queues:
T ID KEY MODE OWNER GROUP CREATOR
CGROUP CBYTES QNUM QBYTES
LSPID LRPID STIME RTIME CTIME
Shared Memory:
T ID KEY MODE OWNER GROUP CREATOR
CGROUP NATTCH SEGSZ CPID LPID ATIME
DTIME CTIME
Semaphores:
T ID KEY MODE OWNER GROUP CREATOR
CGROUP NSEMS OTIME CTIME
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