On 09/07/2007 02:34 PM, Andrea S. Gozzi wrote:
> On Fri, 2007-09-07 at 13:40 -0500, Mumia W.. wrote:
>> On 09/07/2007 11:58 AM, David Brodbeck wrote:
>>> Also, Linux is very aggressive about swapping out idle pages. (Some
>>> would even say too aggressive.) Even if you have what you think is
>>> plenty of RAM, it's quite likely Linux will swap out some stuff in order
>>> to make more room for the disk cache.
>>>
>> Is there a way to disable this aggressive swapping?
>>
>>
>
> You could try tuning /proc/sys/vm/swappiness but I'm not sure sarge kernel supports it.
>

Thanks. I've compiled 2.6.22 from source, so I'll try that.



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On 09/07/2007 02:33 PM, David Brodbeck wrote:
> [...] There's a good
> summary of the arguments for and against tweaking it here:
> http://kerneltrap.org/node/3000
>
> 2.4.x didn't have any way to tune this. But the virtual memory system
> in 2.4.x has so many unpleasant behaviors, anyway, that I'd really
> suggest upgrading if you're experiencing problems in this area.
>
>
>

Thanks for the link. I installed 2.6.22 onto Sarge by compiling from source.

I'll try swappiness at 30 for a while.


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Thanks!

--- David <wizzardx@gmail.com> wrote:

> On 9/7/07, Serena Cantor <qipaishi2006@yahoo.com> wrote:
> > I have sarge, I use it all the time (it's server)
> > The machine is my bedroom and scsi disk make noise from time to time (it's read/writing)
> >
> > which script cause reading/writing? Let's assume it's default installation. I don't start any
> > program myself.
> >
>
> First stop cron, and check if you still get the noise. If the noise
> stops then check what runs from cron (tail /var/log/syslog). If your
> scsi drive makes a noise every minute, on the minute (or on some
> interval of time divisible by 60 seconds) then it is probably a cron
> script.
>
> Then run pstree and see what's running. Kill the process off one by
> one until the noise stops. When the noise stops then the last thing
> you killed is your suspect.
>




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Thanks! I don't create swap partition during installation.

--- Hal Vaughan <hal@thresholddigital.com> wrote:

> On Friday 07 September 2007, Serena Cantor wrote:
> > Thanks! "most of server-related work" are very specialized program I
> > wrote myself.
> >
> > another example: seeding in bittorrent, if memory is big enough and
> > file being served is small enough.
>
> Also, depending on RAM size, even if you think everything can be done in
> memory only, a lot of processes might be using swap space or may be
> writing cache or log files to the disc.
>
> Hal
>
>
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On Friday 07 September 2007, Serena Cantor wrote:
> Thanks!

So did you locate one program in particular that was creating most of
the noise? Others might want to know that answer at some point.

Hal


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On Friday 07 September 2007, Serena Cantor wrote:
> Thanks! I don't create swap partition during installation.

I don't know if Debian uses a swap file or not. Someone else would
know. If so, then you might still be hearing noise from swapping.

Hal


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No. I don't expect my question generate so many replies. I have to sign off the list so I wrote
"solved" in the hope of stoping good guys answering my question again.

I'm considering moving sarge to another room and setting up WLAN.

--- Hal Vaughan <hal@thresholddigital.com> wrote:

> On Friday 07 September 2007, Serena Cantor wrote:
> > Thanks!
>
> So did you locate one program in particular that was creating most of
> the noise? Others might want to know that answer at some point.
>
> Hal
>
>
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Thanks! I'm considering moving it to another room.

--- David Brodbeck <brodbd@u.washington.edu> wrote:

>
> On Sep 7, 2007, at 2:42 AM, Serena Cantor wrote:
>
> > Thanks! "most of server-related work" are very specialized program
> > I wrote myself.
> >
> > another example: seeding in bittorrent, if memory is big enough and
> > file being served is small
> > enough.
>
> Since things seem to have veered off topic, I'll give the most likely
> answer to your original question:
>
> If you're hearing disk activity at a specific time every day, it's
> most likely one of the periodic cron jobs. Most of these are
> specified by files in /etc/cron.daily, /etc/cron.hourly, and /etc/
> cron.monthly. You can disable individual jobs by removing the
> execute bits on their scripts in those directories. You can also
> change when they run by editing the "run-parts" entries in /etc/crontab.
>
> I had to do this once when I had a server in my dorm room. The
> server was at the foot of my bed, and it had a noisy old Kalok IDE
> hard disk as one of its drives. The nightly updatedb job kept waking
> me up, so I moved it to a time when I'd already be awake.
>
> You'll never get rid of *all* of the disk activity because there's a
> lot going on behind the scenes in a Linux system.
>
>
>
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On 09/07/07 18:04, Hal Vaughan wrote:
> On Friday 07 September 2007, Serena Cantor wrote:
>> Thanks! I don't create swap partition during installation.
>
> I don't know if Debian uses a swap file or not. Someone else would
> know. If so, then you might still be hearing noise from swapping.

Linux has been able to use swap files since (I think) v2.0.

Up until v2.6, though, they've been markedly slower than swap
partitions.

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Fat chance. We *love* discussing this kind of thing.

On 09/07/07 18:06, Serena Cantor wrote:
> No. I don't expect my question generate so many replies. I have
> to sign off the list so I wrote "solved" in the hope of stoping
> good guys answering my question again.
>
> I'm considering moving sarge to another room and setting up WLAN.
>
>
> --- Hal Vaughan <hal@thresholddigital.com> wrote:
>
>> On Friday 07 September 2007, Serena Cantor wrote:
>>> Thanks!
>> So did you locate one program in particular that was creating
>> most of the noise? Others might want to know that answer at
>> some point.

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Give a man a fish, and he eats for a day.
Hit him with a fish, and he goes away for good!

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On 9/8/07, Serena Cantor <qipaishi2006@yahoo.com> wrote:
> No. I don't expect my question generate so many replies. I have to sign off the list so I wrote
> "solved" in the hope of stoping good guys answering my question again.

Might I suggest setting up mail filters so that list-related mails go
directly to separate folders rather than your inbox? Then you won't be
overwhelmed by replies and can review them at your leisure.

Also, make sure you use a mail client/service with good thread handling.

I use gmail, and I have a mail filter which says 'if the "to" contains
debian.org, then tag with "debian" and bypass the inbox'. Filters like
that make your mail much more manageable :-)


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On 09/08/07 03:45, David wrote:
> On 9/8/07, Serena Cantor <qipaishi2006@yahoo.com> wrote:
>> No. I don't expect my question generate so many replies. I have
>> to sign off the list so I wrote "solved" in the hope of stoping
>> good guys answering my question again.
>
> Might I suggest setting up mail filters so that list-related
> mails go directly to separate folders rather than your inbox?
> Then you won't be overwhelmed by replies and can review them at
> your leisure.
>
> Also, make sure you use a mail client/service with good thread
> handling.

Always an excellent idea.

> I use gmail, and I have a mail filter which says 'if the "to"
> contains debian.org, then tag with "debian" and bypass the
> inbox'. Filters like that make your mail much more manageable :-)

This is a flawed strategy, because debian-user@lists.debian.org
might be in the CC list. Or even be Bcc'd.

Better (perfect, actually) to filter on
List-Id: <debian-user.lists.debian.org>

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> > I use gmail, and I have a mail filter which says 'if the "to"
> > contains debian.org, then tag with "debian" and bypass the
> > inbox'. Filters like that make your mail much more manageable :-)
>
> This is a flawed strategy, because debian-user@lists.debian.org
> might be in the CC list. Or even be Bcc'd.
>
> Better (perfect, actually) to filter on
> List-Id: <debian-user.lists.debian.org>
>

>
> This is a flawed strategy, because debian-user@lists.debian.org
> might be in the CC list. Or even be Bcc'd.
>
> Better (perfect, actually) to filter on
> List-Id: <debian-user.lists.debian.org>

Thanks for the information. Gmail can't filter on List-Id AFAICT, but
it does have a "Has the words" option, and putting
"debian-user.lists.debian.org" there works. Gmail "To" also matches
"CC", but not BCC. Have actually had a few of the latter in my main
inbox (don't know how they expected replies to get back to the list)
so your suggestion will there :-)

David.


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On Sat, 8 Sep 2007 17:33:13 +0200
David <wizzardx@gmail.com> wrote:

> > > I use gmail, and I have a mail filter which says 'if the "to"
> > > contains debian.org, then tag with "debian" and bypass the
> > > inbox'. Filters like that make your mail much more manageable :-)
> >
> > This is a flawed strategy, because debian-user@lists.debian.org
> > might be in the CC list. Or even be Bcc'd.
> >
> > Better (perfect, actually) to filter on
> > List-Id: <debian-user.lists.debian.org>
> >
>
> >
> > This is a flawed strategy, because debian-user@lists.debian.org
> > might be in the CC list. Or even be Bcc'd.
> >
> > Better (perfect, actually) to filter on
> > List-Id: <debian-user.lists.debian.org>
>
> Thanks for the information. Gmail can't filter on List-Id AFAICT, but
> it does have a "Has the words" option, and putting
> "debian-user.lists.debian.org" there works. Gmail "To" also matches
> "CC", but not BCC. Have actually had a few of the latter in my main
> inbox (don't know how they expected replies to get back to the list)
> so your suggestion will there :-)

I use Gmail's free POP service, and do filtering on the client
(Sylpheed) side.

> David.

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On Sep 8, 2007, at 1:45 AM, David wrote:
> I use gmail, and I have a mail filter which says 'if the "to" contains
> debian.org, then tag with "debian" and bypass the inbox'. Filters like
> that make your mail much more manageable :-)

I find it's more reliable to filter on the "List-Id" header.




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Am 2007-09-07 00:15:34, schrieb Serena Cantor:
> Could you be more specific?
>
> Supporse I have just installed sarge, which script are read/writing disk from time to time (so I
> can change it)?

At which time?

Maybe it is the cronjob for the find db?

I gabe a SCSI-System with 96 drives of 300 GByte and if it start to
index my Server you are thinking, you are on an Aircraft-Carier.

96 drives with 15.000 RpM... :-)

Thanks, Greetings and nice Day
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant


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On Fri, Sep 07, 2007 at 05:40:38PM +1000, Julian De Marchi wrote:
> Serena Cantor wrote:
>> Thanks! Could you give me a list of programs that start automatically? Do
>> you mean that there's
>> nothing I can do about it?

Run top when the noise starts. Could be anacron kicking in. Does it
happen 5 minutes after starting your computer?

> <snip>
>
> Silly question.

Silly answer, considering this list is _supposed_ to people use
Debian. And a waste of bandwidth!

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