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-1

In brief: connect memory and drives to their places, enter "bios-setup" and reset to defaults (from the root of the settings tree). start the computer. More details: I have 8Gb memory and 3 sata drives but I saw the computer was using only 4Gb and only sata number 2 was working. Looks trivial but I didn't expect it to work this way. Power on without the ...


0

It's been a while since I had to read an OOM-killer log, but as I recall, this Jun 28 05:06:23 crushftp kernel: Killed process 1491, UID 0, (java) total-vm:9620220kB, anon-rss:3245824kB, file-rss:128kB means that java was using 9GB of VM when the OOM-killer shot it in the head. Given that you have 4GB of core, and 4GB of swap, that seems like a ...


0

You can also manually look at your Cron jobs, as Cron is what usually triggers processes systematically at specified times. Ubuntu is a fairly complex server distro compared to some other minimal linux server distributions. My guess would be some type of job that automatically searches for security updates. so look for any apt-get processes at 12AM daily. As ...


3

You have New Relic monitoring. You literally have a monitoring solution that can tell you what your server is doing with 1-minute granularity! Select the relevant timeline in the Overview graph. Click on Processes. Sort the processes by RAM utilization. Select the process you're concerned about to drill down for more detail. Profit.


-2

Edit the my.cnf file and specify the amount of RAM MySQL is allowed to use Change the ib_data file to ensure that all databases create their own file. That way reading the database does not take as much RAM All these edits should be done in /etc/mysql/my.cnf.


1

This is not a problem, memory not in use is memory to no use... Linux will use free RAM to cache disk. Once that RAM gets needed for any process the amount used for cache will decrease. You could also study the output of 'free' which will show you free RAM both with and without buffer/cache consideration.


6

You have a kernel memory leak. The nonpaged pool is 2.5GB. You can use poolmon to see which driver is causing the high usage. Install the Windows WDK, run poolmon, sort it via P after pool type so that non paged is on top and via B after bytes to see the tag which uses most memory. Now look which pooltag uses most memory as shown here: Now open a cmd ...


0

In general 4GB of memory is slim for a file server. Remember that it will try to cache files when it can, and with just 4GB there is little room for any cache at all. The filesystem itself will also use memory for caching and even active pages (like the NTFS master file table). Adding DFS-R means even more memory usage (it uses a Jet database). Note: By ...


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The the task manager screen you posted. Try using Resource monitor to track down the culprit. Go to the Memory tab and it gives a breakdown. I also agree, 4GB for Server 2008 is very light.


1

I am going to share my findings in this answer, hoping that will help someone in the future. These findings would be impossible without the prompt observation in @EEAA's comment. Indeed the restriction comes from the OpenVZ software. The numothersock restriction can be seen in /proc/user_beancounters and according to the documentation: 'UBC resources in ...


2

Can someone explain OPcache memory usage in layman terms ? ldennison plus the various commenters have probably/mostly answered this part. Another great write-up can be found here: http://www.sitepoint.com/understanding-opcache/ Allow me to summarise: OPcache allows you to pre-allocate a certain amount of memory. You have set it to 1024, ie. 1GB. ...


1

Your opcache memory limit (currently set to 1024MB/1GB by the looks of it) should be large enough to cover the size of all the PHP files being cached by Opcache. 1GB for a set of PHP files is large, so that may not be the issue, but you should at least start there. The "File Usage" button on your attached screenshot likely will give you a report of memory ...


0

The system should not reboot upon correctable memory error. Do you see additional information/pattern via ipmitool sel elist ? The BMC watchdog could reboot the system, check if it is enabled via ipmitool mc watchdog get. As you already have the information on the location of the bad memory module, replace it and if the problem manifests again, the memory ...


0

It's Supermicro hardware, so it's inexpensive and lacking the polish and integration of a Dell, HP or IBM... ECC RAM is error-correcting, but there's a threshold that's likely being exceeded. The DIMM in question is likely failing and you should plan to replace it. You can attempt to identify the module by slot and replace it. Since this occurs with ...


0

My first question is: What the reason that the swap memory is increasing – because high level of RAM usage or something else? You dont have high level of ram usage. read this You can check by typing free -h or free -m and look at the line with -/+ buffers/cache: The reason for increasing swap usage is because you only have 2GB of ram and ...


0

What the reason that the swap memory is increasing – because high level of RAM usage or something else? Yes, High level of RAM usage Second - is it possible to verify how much memory a process holds? Most of the methods are indicative to find out how much memory a process holds. There is no accurate way of measuring this as lot of factors add ...


0

None of the suggested fixes worked in my situation. I still got the error message DB Update failed, database locked every day from the daily cron job. But uninstalling apt-xapian-index package finally solved the problem. The source of that error message is in the /etc/cron.daily/apt script which tries to run update-apt-xapian-index which is provided by the ...


0

Possible interpretations: not all I/O is disk I/O, network I/O is often an issue in clustered environments the number and configurations of disks have often higher impact on the overall disk I/O than the speed of the disk itself (for example 2 slower disks in a RAID0 config can outperform a single very fast disk at the same overall price) RAM limitations ...


1

How is disk speed not related to I/O limitations? I'm totally with you on this, they are linked, especially for Hadoop - I've just finished designing a new pair of clusters and disk speed was definitely an important aspect of that.


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If a significant amount of swap is in use (more than just a few MB) then the system is indeed in a memory crunch - your example shows such case - the system typically becomes sluggish in such conditions. A small amount may be normal, typically indicating memory pages swapped out (during a memory crunch which happened sometimes in the past) which weren't ...


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This is an old question, but if you still have not figured it out you can type qstat -j <Job_ID> The category "maxvmem" gives you the maximum amount of RAM your job used when it was running. So the value of maxvmem is the number you are looking for to find the largest amount of memory your job used while it was running. Also, you can only use qstat ...


-1

Check memory on global php.ini file . dont simply decalre valure like 1 G etc... I would highly recommend that a local php.ini is brought into that account so as not to impact the entire server. I would recommend setting the global php.ini limit to around 64M as this is typically enough for most accounts check your apache settings too


0

I'd say you should consider monitoring swap usage. When Linux starts swapping aggressively it means something is eating up the memory for some reason.


1

Here's two things to check: Most likely you have a memory leak. pm.max_requests will kill/restart the php-fpm child process after it's handled this many requests. Since it takes about a day for your box to slow to a crawl, try setting this to a number to causes each child process to be respawned every 20 minutes or so. So if you get 200 requests a minute, ...


0

Some applications will unfortunately hammer swap directly, intentionally skipping RAM. Looking at you, Chrome (and at one point Photoshop). The only way to get these applications not to swap is to run without a swap partition. Even swappiness 0 IIRC will still give them access since they explicitly demand it. Changing swappiness per above will work for ...


1

The logrotate utility is likely your friend. The lsof utility may be useful too. Believe it or not the search facility here on SF is helpful as well.



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