similar to: Way to not page swap programs

Hi all, I used to use centos 4.5 on an AMD 4800+ with 2GIG ram. Now I use centos 5.1 on AMD 6400+ with 4GIG RAM. The system responsiveness is different between the two. I noticed that centos 5.1 seems to be swapping programs out of memory at times resulting in slowness (perceived by me). I played with swappiness (/proc/sys/vm/) setting to 10, then 1 then 0. Still resulted in the same perceived

Is there a way to specify that program X should be kep in memory and not swap it out? I have a program that takes some time to load and as long as you keep using it its responsive but if after sometime its not in use and now I use it it has a slow response till it gets swapped back in. The box in question has 1 GIG ram and its not running much else just this program really. Just looking for a

hi all, I use rsync to copy/backup ALL my stuff to another disk. When I run this seems like my machine (4 GIG ram centos 5.1) now begins to swap out more programs. Is there a way to reduce that swapping? I am running with echo 1 > /proc/sys/vm/swappiness I simply mount /dev/sdc1 /mnt/backup; mkdir /mnt/backup/month.day.year then rsync -a /home /mnt/backup/mon.day.year This is approximately

Hello, I am going to buy new laptop with two drives, one SSD and one HDD and I want to place swap partition on HDD which will be most time unused and therefore spinned down. Problem is, that I don't know, if or how often is kernel touching swap space even if there is lot of free memory and thus spinning HDD up. Thank you in advance

Dear CentOS people, This is just a general question related to memory management, and there may have been a thread or two about it before, but I'd like to post anyway. A user was looking at top, whereby he found out that his two processes were 10.2g and 4836m in VIRT. They were 6.4g and 4.6g in RES respectively. 3445964k was free still. He was wondering why the system didn't use

I am considering installing CentOS 4.4, and am interested in how best to set up. I have been using FC2 and helping administer a Debian machine for a few years, but do not consider myself a Linux guru. My current set up uses a /swap partition which is 2x my memory size mem = 256 MB $ sudo /sbin/fdisk -l /dev/hda6 76506 77545 524128+ 82 Linux swap I'm interested in the

also in /etc/sysctl.d/ On Thu, Dec 24, 2015 at 8:58 AM, Gordon Messmer <gordon.messmer at gmail.com> wrote: > On 12/23/2015 05:08 AM, Ofer Hasson wrote: > >> By running "systemctl status systemd-sysctl" I also receive the same >> output, but a simple "cat /proc/sys/vm/swappiness" returns the default >> value, and not the one set by my conf file.

Hi people, I got Centos 4.3 on a 1GB Pentium IV machine. The output of free ------------------- $ free total used free shared buffers cached Mem: 1026896 573848 453048 0 2988 131712 -/+ buffers/cache: 439148 587748 Swap: 1052248 137568 914680 ------------------ There is plenty of free ram, but the kernel

Hi all, I order to reach maximum performance on my centos kvm hosts I have use these params: - On /etc/grub.conf: kernel /vmlinuz-2.6.18-164.11.1.el5 ro root=LABEL=/ elevator=deadline quiet - On sysctl.conf # Special network params net.core.rmem_default = 8388608 net.core.wmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216

I can't resist. Read the thread that was pointed to on lkml. ROTFLMAO. *Real* UNIX addressed these problems long ago. I guess the "Gurus" suffer from NIH (Not Invented Here) syndrome. Given a "general purpose" system, tunability is a must. UNIX, as delivered by USL in such examples as Sys V, had tunables that let admins tune to their needs. A single "swappiness"

Mem: 2075040k total, 1331452k used, 743588k free, 50896k buffers Swap: 2031608k total, 144k used, 2031464k free, 1191532k cached SunFire X2100 running Centos 4.3. Linux maytag1.texoma.net 2.6.9-34.0.2.EL #1 Fri Jul 7 19:24:57 CDT 2006 i686 athlon i386 GNU/Linux rgds/ldv

You are correct, I'll refine my problem, By running "systemctl status systemd-sysctl" I also receive the same output, but a simple "cat /proc/sys/vm/swappiness" returns the default value, and not the one set by my conf file. But, if I run "/usr/lib/systemd/systemd-sysctl" the "cat /proc/sys/vm/swappiness" does return the correct value. Any idea ? Does

Hi all. I am looking for some command line programs (pre made) that will connect to an ldap server and list out the users in question provided by the search argument given. I found some mention of it from oracle but I did not see where they can be downloaded. Is something like this available and I just havent found them? Thanks, Jerry

Hey all, After upgrading to CentOS 7.2, non of my servers run systemd-sysctl on boot. So far, I tried running manually /usr/lib/systemd/systemd-sysctl, it runs smoothly and updates all the parameters. I also ran sysctl --system, which also executes successfully. I checked within systemd, and systemd-sysctl is wanted by the sysinit.target which is wanted by the multi-user.target - the one I boot

Am 05.06.2015 um 17:40 schrieb Greg Lindahl: > On Fri, Jun 05, 2015 at 12:29:04PM +0200, Markus "Shorty" Uckelmann wrote: > >> How can I further debug this >> problem and find out what's the culprit? > > It's working as designed. Sadly. It is just my first time I see this behaviour to this extent/on so many servers. So you can say that I'm kind of a

Hi, We upgraded a legacy (NT4) domain from 3.6 series to 4.8 and then 4.9.4 samba version (using sernet subscription packages / debian stable) The setup is composed of 4 DCs with each 2 CPU/16GB RAM. We currently have ~700 user accounts / ~600 computers / ~150 groups Our mail setup, SSO, ... query the 4 DCs constantly. Every 5 to 10 days the RAM consumption and CPU usage (due to kswapd)

Am 05.06.2015 um 18:33 schrieb Gordon Messmer: > On 06/05/2015 03:29 AM, Markus "Shorty" Uckelmann wrote: >> some (probably unused) parts are swapped out. But, some of >> those parts are the salt-minion, php-fpm or mysqld. All services which >> are important for us and which suffer badly from being swapped out. > > Those two things can't really both be

I added a subject so we can track this message on the list easier. ;) On Fri, Mar 21, 2014 at 12:19 PM, John Doe <jdmls at yahoo.com> wrote: > Hey, > > kernel: rsync invoked oom-killer: gfp_mask=0x200da, order=0, oom_adj=0, > oom_score_adj=0 > ... > kernel: Out of memory: Kill process 27974 (mysqld) score 361 or > sacrifice child > kernel: Killed process

I am getting an error about to many open files. I tried to "echo 500000 > /proc/sys/fs/file-max" The number is there now, but I continue to get the error. Is there something else to do? Jerry

On 12/23/2015 11:12 PM, Ofer Hasson wrote: > [root at web-devel-local-1 ~]# /usr/lib/systemd/systemd-sysctl > [root at web-devel-local-1 ~]# cat /proc/sys/vm/swappiness > 10 So... you know that it works when you run it from a root shell, but not during boot. Is the file labeled properly? Anything in audit.log?