Imac sleeps whith hard disk activity

I have music playing on my hard drive using a Logitech Squeezebox but for some reason my Intel Imac using the latest software doesnt
recognize this and falls asleep at the time my imac is supposed to sleep at around 15 minutes.I have multiple Squeezeboxes and they all
will fall asleep when playing music on my Imac
This happened about 4 years ago but since then I havent had this issue so I assume its software related.
Any suggestion other then Pram reset. Ive done all that,restarted computer,etc.

RedDwarfUK wrote:
I havent really installed much as well. Here are the list of programs I have installed.
Adium
Firefox
New icons
app cleaner
skype
spotify
chicken of the VNC
GoToMeeting
Cisco VPN Client
Xmarks for safari and firefox
I would start by checking each of these items, making sure you have the latest versions of each & that they are compatible with Snow Leopard. Do the same for any Firefox extensions or any plugins associated with any of these applications. In particular, chicken of the VNC hasn't been updated since 2006 & what little compatibility info I can find for it suggests it supports only Tiger (10.4) & 10.3.9. The Download Xmarks page indicates that it is beta software.
Also note that some of these items may do more than just run as applications. On first run or install, some might install startup or login items, or preference panels that remain in effect even when the application is not running. Check /Library/StartupItems & /System/Library/StartupItems -- both are empty by default, so anything you find in them is suspect. Likewise, check the System Preferences > Accounts > Login Items tab. Anything you find in them that does not appear to come from Apple (like iTunes helper) is suspect. Also check the "Other" category of System Preferences.

Similar Messages

IMac sleeps even when disk activity is occurring - Mavericks

Hi,
I have had this problem for awhile, but was hoping a software update would have fixed the problem (but hasn't).
I have an 2011 iMac running Mavericks and I have noticed that the sleep function does not behave as expected.
I often have my iMac copy files between two external drives or perform backups overnight, but have found that my iMac will go to sleep in the middle of the process. I have my Energy Saver settings set so that my iMac goes to sleep after 15 minutes and will try to put the hard drives to sleep where possible, however my iMac should not go to sleep if disk activity is happening.
I find that when I wake up in the morning, my file transfers have been paused and only recommence once the IMac is woken. This is the same with my CarbonCopyClone, the backup is paused but restarts when the iMac wakes.
It used to be that these functions could happen overnight and my iMac would only sleep once they were completed.
My workaround has been to keep my iMac awake using the Caffeine Application, but this is not ideal as Caffeine does not know when the process has finished.
Any help would be appreciated,

Good thread on this issues at MacRumours (http://forums.macrumors.com/showthread.php?t=1415661). Suggested solution is to install Caffeine from the App Store (http://itunes.apple.com/us/app/caffe...11246225?mt=12).

After a failed backup because my macbook went to sleep, my hard disk is full. What happened? Where can I find the file i need to erase?

because my macbook went to sleep, my hard disk is full. What happened? Where can I find the file i need to erase

It's hard to tell -- just going to sleep shouldn't have caused a problem. Something else may be going on.
See Where did my Disk Space go? especially the blue box.

High hard disk activity caused by systemd-tmpfile

Hi
I have home server PC running pure, console Archlinux on it 24/7. It works fine for about 3 years and still do, but after systemd transition I noticed that my server periodically runs systemd-tmpfile daemon which causes intensive and continuous hard disk activity.
My /etc/tmpfiles.d is empty, but here is the content of /usr/lib/tmpfiles.d folder:
-rw-r--r-- 1 root root 30 Sep 20 2012 apache.conf
-rw-r--r-- 1 root root 30 Jan 13 17:58 console.conf
-rw-r--r-- 1 root root 19 Jan 27 06:41 lastlog.conf
-rw-r--r-- 1 root root 1146 Jan 13 17:58 legacy.conf
-rw-r--r-- 1 root root 29 Feb 5 11:09 lirc.conf
-rw-r--r-- 1 root root 24 Mar 5 12:57 mpd.conf
-rw-r--r-- 1 root root 33 Feb 25 19:41 mysqld.conf
-rw-r--r-- 1 root root 27 Jan 27 09:09 nscd.conf
-rw-r--r-- 1 root root 51 Feb 25 17:32 samba.conf
-rw-r--r-- 1 root root 36 Oct 13 19:30 saslauthd.conf
-rw-r--r-- 1 root root 33 Dec 21 16:39 svnserve.conf
-rw-r--r-- 1 root root 736 Jan 13 17:58 systemd.conf
-rw-r--r-- 1 root root 449 Jan 13 17:58 tmp.conf
-rw-r--r-- 1 root root 30 Dec 13 15:24 uuidd.conf
-rw-r--r-- 1 root root 622 Jan 13 17:58 x11.conf
My question is how to know which *.conf file causes such a high HDD activity or how to resolve the problem at all?
Last edited by clovenhoof (2013-03-21 18:20:26)

Ok here is what get with "lsof -c systemd-tmpfile" during this activity:
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
systemd-t 1069 root cwd DIR 8,3 4096 2 /
systemd-t 1069 root rtd DIR 8,3 4096 2 /
systemd-t 1069 root txt REG 8,3 59504 290840 /usr/bin/systemd-tmpfiles
systemd-t 1069 root mem REG 8,3 52144 262523 /usr/lib/libnss_files-2.17.so
systemd-t 1069 root mem REG 8,3 138206 262495 /usr/lib/libpthread-2.17.so
systemd-t 1069 root mem REG 8,3 18760 277530 /usr/lib/libattr.so.1.1.0
systemd-t 1069 root mem REG 8,3 2035539 262449 /usr/lib/libc-2.17.so
systemd-t 1069 root mem REG 8,3 31744 262453 /usr/lib/librt-2.17.so
systemd-t 1069 root mem REG 8,3 16776 299945 /usr/lib/libcap.so.2.22
systemd-t 1069 root mem REG 8,3 165436 262497 /usr/lib/ld-2.17.so
systemd-t 1069 root 0r CHR 1,3 0t0 6461 /dev/null
systemd-t 1069 root 1u unix 0xffff8801393df1c0 0t0 23160 socket
systemd-t 1069 root 2u unix 0xffff8801393df1c0 0t0 23160 socket
systemd-t 1069 root 3u unix 0xffff8801393dba80 0t0 23161 socket
systemd-t 1069 root 4r DIR 8,3 9482240 1970431 /var/tmp
systemd-t 1069 root 5r DIR 8,3 4096 793638 /var/tmp/systemd-private-G25Rag

Brand new 27" iMac with Snow Leopard has constant hard disk activity

I just purchased a new 27" iMac which was an upgrade for my 24" with Leopard. I have used my older machine for a good year and not noticed any hard drive activity when idle.
Now on the new machine with Snow Leopard I constantly get hard disk activty every few seconds.
This will happen from:
1) Restart
2) leaving at login screen
3) loggin in and not running anything.
4) Computer screen in sleep mode.
5) well, all the time really.
I have looked at the activity monitor and can see spikes every 5-10 seconds.
I have turned off all processes possible, watched processes for CPU spikes, etc to no avail.
Is anyone else having the same problem and if so can they suggest a fix? I originally thought it may be something writing to a log every so often but I have no idea what and how to find it.
Using iStat just confirms the activity.
Hope you can help as this is driving me mad!
Message was edited by: RedDwarfUK

RedDwarfUK wrote:
I havent really installed much as well. Here are the list of programs I have installed.
Adium
Firefox
New icons
app cleaner
skype
spotify
chicken of the VNC
GoToMeeting
Cisco VPN Client
Xmarks for safari and firefox
I would start by checking each of these items, making sure you have the latest versions of each & that they are compatible with Snow Leopard. Do the same for any Firefox extensions or any plugins associated with any of these applications. In particular, chicken of the VNC hasn't been updated since 2006 & what little compatibility info I can find for it suggests it supports only Tiger (10.4) & 10.3.9. The Download Xmarks page indicates that it is beta software.
Also note that some of these items may do more than just run as applications. On first run or install, some might install startup or login items, or preference panels that remain in effect even when the application is not running. Check /Library/StartupItems & /System/Library/StartupItems -- both are empty by default, so anything you find in them is suspect. Likewise, check the System Preferences > Accounts > Login Items tab. Anything you find in them that does not appear to come from Apple (like iTunes helper) is suspect. Also check the "Other" category of System Preferences.

Wake up: tons of hard disk activity

When the computer is unattended and goes to sleep to save power, there is an insane disk activity during wake up, combined with tons of freezes, etc.
I am not talking about the deep sleep / hibernation where data gets saved to the disk; I'm talking about leaving the computer unattended 20 minutes and then wasting 2-3 minutes until it's done doing whatever with the disk when I wake it up.
Everything is still in ram, I'm constantly waiting for.. whatever happens.
Any idea what the OS might be doing and, especially, how to improve it, if possible?

After checking more closely, it seems like the system is tied by two services:
- syncdefaultd
- cfprefsd
they go crazy after the wake up and tie up the hard drive and freeze the machine. Any idea what it could be for?

Imac G3 ppc hard disk failure can't boot from cd

Hi All,
My hard is disk making repetitive clicking noises and the machine won't boot up, I just get a grey screen and eventually a flashing folder/question mark. I did manage just once to start from the install CD,but Disk Utility couldn't see the internal HD so that was a dead end, can't repair what it can't see! and I haven't been able to start it since. Tried various key combos on start (safe mode,clearing PRAM) still nothing. Bit the bullet and took out the internal drive and put it back (nothing to lose, you never know? ). As it seems the HD is beyond help and the fact that changing over the HD is reasonably straightforward physically, I am considering buying a replacement and doing it myself. Now I haven't done a repair like this before and wonder if when I power up with the new HD in place will I be able to boot from the original install disk ie. holding down "c" (which is not the case at the moment) and format and install the OS onto the new Hard Disk ?
I would rather spend a couple of quid and save the machine than have to spend hundreds on a new one.

I did try using my external USB connected CD reader/writer using the option key on start but couldn't get past the blue screen with the arrow and refresh icons.
The iMac G3 will not boot from a USB device.
Be careful when booting software that hasn't run on the machine before. You need to have the lastest firmware on the machine when booting 10.2, 10.3, or 10.4 on the machine. I
You could disassemble the external firewire drive & swap in a dvd drive. I did this. The dvd drive will not fit in the case, but who needs a case anyway. Just use the electronic parts.
You need to figure out the level of your firmware before installing10.2 or greater. ( The PC name for firmware is BIOS. ) Installing 10.2with a down level firmware will most likely make your iMac unusable anddifficult to fix.
What is firmware?
The firmware software receives control when you poweron your machine. It does some hardware testing and some hardware configuration then passes control to your version of MacOS. It reside on a PROM ( program read only memory ) chipon the logic board.
Figuring out what level of firmware you have?
1) Mac OS 9.x or 8.x, you need to use the Apple System Profiler.
Apple -> Apple System Profiler
2) Mac OS X, use the System Profiler.
Apple -> About This Mac
click on the More Info... tab
click on Hardware
read the Boot ROM Version
3) Open Firmware, boot into Open Firmware.
Power on your iMac while holding down command+option+o+f
The first output line contains the firmware level. Mine reads:
Apple PowerMac4,1 4.1.9f1 BootRom built on 09/14/01 at 13.18.04
Copyright 1994-2001 Apple Computer Inc.
On my machine, I have 4.1.9f1.
What firmware do you need?
http://docs.info.apple.com/article.html?artnum=86117
For a slot loading iMac, this article indicates that you need to berunning 9.1 or later version of Mac OS Classic.
http://docs.info.apple.com/article.html?artnum=75130
"The iMac Firmware Update 4.1.9 will only run on iMac computers withlot-loading CD or DVD drives running Mac OS 9.1 or later from a localdrive. If you are using Mac OS X you must boot from a local Mac OS 9.1or later writeable partition (not a CD, or network disk) prior tofollowing the update instructions."
You can download the Mac OS 9 updates from the Apple site.
http://support.apple.com/kb/HT1387?viewlocale=en_US

Satellite L655-11J - Hard disk activity all the time

Toshiba please I need help
The first run of my laptop I entered my location my name and a password, I install Toshiba updates and Windows 7 updates (the notifications I got) then I noticed the hard drive is active all the time and the laptop is very slow. I tried a lot to restore the original Toshiba image the built in the laptop and I finally did it thinking maybe I did something wrong
The hard disk drive still always active (don't know what reading or writing) no monitoring for any activity the laptop very slow and lot of seeking sounds.
any solution please, I got this problem the first use of it :(

I know it has a guarantee and they will replace it for free, but it was a gift from Saudi Arabia, I'm now in Syria :( I've to wait until on of my relative go back there :D
I went to Toshiba in Syria they charge my 7 $ to tell me the hard is defective although I knew it was so, and I will need to pay 100$ for a replacement so I will wait ;)
thanks all, it was my mistake, it is just I noticed the HDD light always on in windows 7 and it was not on in USB Linux so I thought it was a system problem, I didn't have much time to work on it and make tests :D
I'm sorry again

Unusual hard disk activity after "Erase free space"

I have two partitions on my hard disk - a small partition for the system software and a big partition for everything else. A few days ago, I backed up a few files from my big partition and then used Disk Utility "Erase free space". Since then, my hard disk is behaving oddly. I can hear it, as if it continuously reading and writting data. At first, I thought it was an auto-update in progress or some sort of automatic system maintenance. But the odd behavior never stopped. I scanned my files with an anti-virus software - nothing wrong. I scanned my files with Disk Utility - nothing wrong. I used Onyx to check the system - nothing wrong. I even erased and reinstalled the system software - no changes! So what could possibly force my hard disk to behave like that? Is something messed up because of "Erase free space"?

You could run fs_usage
To view file activity for all processes with the fs_usage tool, you would enter the following at the Terminal prompt.
sudo fs_usage
If you wanted to limit the display to files accessed by a particular process, you could redirect the output through the grep tool. For example, to display file behavior for the TextEdit application, you would enter the following at the Terminal prompt:
% sudo fs_usage | grep TextEdit
Once your application finishes launching, stop fs_usage by typing Control-C in your Terminal window.
Look for all writes. Might be mdworker (Spotlight)
Try reindexing Spotlight by dragging the HD icon into the Privacy window. Leave it there for a minute and remove it using the minus button.

Dconf editor window and hard disk activity

Hello,
For quite some time for me, moving the dconf-editor window causes significant hard drive activity. I don't know why, but moving the window makes the hard drive work hard, and cpu load goes up sharply. Does this happen for anyone else? The hard drive continues working for a fair bit after stopping movement of the window. No other window does such a thing...

4GB files on a 32-bit kernel and you run into what I call a bottleneck.
More RAM helps; and using dual RAID0's also allows for more I/O.
2GB left over falls into the anemia category.
The system drive from other experiments, tests, and benchmarks, does a lot more than just sit there and feed up applications.
And just as a fast SSD or 10K drive, or setting those up in RAID0, offers 240-500MB/sec, your memory bandwidth also plays a role.
When working with 2GB files in CS2 and later, arrays for every volume + whatever RAM you can throw at it helps.
Some operations are still single-thread and hold everything up, when you export or save or write to disk RAID makes up for some of that. A file is written out as temp file, old file is renamed, and when done deleted, while the directory and index are updated. And Spotlight rather than wait for things to be done, CAN get in the way while you work.
I don't know the full gist, but back in G3/G4, SCSI arrays made a big enough difference that I splurged on the full setup (two dual channel controllers driving 15K and 10K drives). And without? it was a real tortoise.
If you think 2GB is 'enough' to run OS X alone, let alone Safari, iTunes, Pages or office apps, let alone any pro apps or ones that need some RAM... CS4+ should have an 8GB system.
And the RAM needs of a Mac Pro have just never been as low or comparable to your desktop or laptop system.
But stay with 4GB if you don't mind.

Program For Logging Hard Disk Activity

Hey Everyone,
I am having an issue with a server in which the Hard disks keep failing, within the last year 3 of them have died.
I am in need of a program that can record logs of the hard drive activity overnight, a period of about 12 hours. This will help us track down at what time the issue is occuring, and then what is causing it. Something similar to the built-in windows hard
disk monitor is task manager, but with the ability to record would be perfect. I have tried other programs but they log in text, and it would take hours of looking through the logs to find any abnormalities
Does anyone know of such a software?

Might give this a go.
DiskMon for Windows v2.01
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows]
Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Energy Saver sleep cycling hard disk off/on/off/on

I set Energy Saver to:
* Put computer to sleep when inactive for 15 min
* Put display to sleep when inactive for 15 min
* Put the HD to sleep when posible.
ScreenSaver is set to Never.
At 15 minutes the system goes to sleep but the hard disk cycles on and off. Off for 30 sec, on for 2 minutes, off for 60 seconds... random on/off times. Something in the system is causing the HD to wake up. After maybe 20 cycles eventually it seems to finally go to sleep for good. Any suggestions on how to make the on/off cycling stop?
PB G4 500 MHz 512 MB Mac OS X (10.4.3) LAN to Cable internet, a PC and HP printer

There have been reports of some problems with the 10.5.6 update via software update and that downloading the 10.5.6 combo updater and running it again can fix it.

Hard Disk activity slows machine down

Hi,
I have 4 hard drives in my MacPro and when a disk is very busy regardless of which one, the machine grinds to a halt.
For example, A Parallels VM, which is stored on a separate drive to the boot drive, was flogging the hard disk and my machine ground to a halt until Parallels finished using the drive. It's not the drive the VM was stored on that is problem because I bought a new faster drive and moved the VM there.
I have 4gb of ram
Any ideas?

4GB files on a 32-bit kernel and you run into what I call a bottleneck.
More RAM helps; and using dual RAID0's also allows for more I/O.
2GB left over falls into the anemia category.
The system drive from other experiments, tests, and benchmarks, does a lot more than just sit there and feed up applications.
And just as a fast SSD or 10K drive, or setting those up in RAID0, offers 240-500MB/sec, your memory bandwidth also plays a role.
When working with 2GB files in CS2 and later, arrays for every volume + whatever RAM you can throw at it helps.
Some operations are still single-thread and hold everything up, when you export or save or write to disk RAID makes up for some of that. A file is written out as temp file, old file is renamed, and when done deleted, while the directory and index are updated. And Spotlight rather than wait for things to be done, CAN get in the way while you work.
I don't know the full gist, but back in G3/G4, SCSI arrays made a big enough difference that I splurged on the full setup (two dual channel controllers driving 15K and 10K drives). And without? it was a real tortoise.
If you think 2GB is 'enough' to run OS X alone, let alone Safari, iTunes, Pages or office apps, let alone any pro apps or ones that need some RAM... CS4+ should have an 8GB system.
And the RAM needs of a Mac Pro have just never been as low or comparable to your desktop or laptop system.
But stay with 4GB if you don't mind.

Display shivers on Hard Disk activity

Hello all,
The problem I have has been discussed here before. The display of my eMac shivers when the Hard Disk is accessed. The problems started after I replaced the IVAD cable to fix the raster shift problem (which I do not experience anymore). So far I have read on this forum that more people have experienced the same problem. But what I am interested in is a fix for this problem! It seems to be some kind of shielding problem. Could this also be related to the IVAD cable? I do believe that simply adding shielding at the right place should fix the problem, but where? Maybe anyone else has already experimented on finding a fix for this problem and is willing to share any ideas.
Regards,
Bart Dubelaar

4GB files on a 32-bit kernel and you run into what I call a bottleneck.
More RAM helps; and using dual RAID0's also allows for more I/O.
2GB left over falls into the anemia category.
The system drive from other experiments, tests, and benchmarks, does a lot more than just sit there and feed up applications.
And just as a fast SSD or 10K drive, or setting those up in RAID0, offers 240-500MB/sec, your memory bandwidth also plays a role.
When working with 2GB files in CS2 and later, arrays for every volume + whatever RAM you can throw at it helps.
Some operations are still single-thread and hold everything up, when you export or save or write to disk RAID makes up for some of that. A file is written out as temp file, old file is renamed, and when done deleted, while the directory and index are updated. And Spotlight rather than wait for things to be done, CAN get in the way while you work.
I don't know the full gist, but back in G3/G4, SCSI arrays made a big enough difference that I splurged on the full setup (two dual channel controllers driving 15K and 10K drives). And without? it was a real tortoise.
If you think 2GB is 'enough' to run OS X alone, let alone Safari, iTunes, Pages or office apps, let alone any pro apps or ones that need some RAM... CS4+ should have an 8GB system.
And the RAM needs of a Mac Pro have just never been as low or comparable to your desktop or laptop system.
But stay with 4GB if you don't mind.

Why my mouse pointer often freeze during heavy hard disk activity?

Hi!
My mouse pointer often freeze during heavy disk activity: copying files, extracting archives, downloading and encrypting files from mega.co.nz, etc. The whole system becomes unresponsive. Currently I am using linux-pf kernel with BFS scheduler and I/O scheduler elevator BFQ. What can I do to avoid this annoyance?

Konstantin_hu wrote:Only 200 MB of swap space of 4 GB is in use.
Swap space is extremely slow, so you don't want it to be used except as a last resort. Try in /etc/sysctl.conf:
vm.swappiness=0

Imac sleeps whith hard disk activity

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