Server :: Out Of Socket Memory / Server1 Kernel: __ratelimit: 6 Callbacks Suppressed?
Aug 16, 2009
Aug 16 21:41:14 server1 kernel: __ratelimit: 6 callbacks suppressed
Aug 16 21:41:14 server1 kernel: Out of socket memory
Aug 16 21:41:29 server1 last message repeated 21 times
KERNEL: 2.6.26.6
my sysctl.conf:
Code:
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.lo.accept_source_route = 0
net.ipv4.conf.eth0.accept_source_route = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.all.rp_filter = 1
code....
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Aug 12, 2010
I've got this lines in /var/log/messages Server is running varnish-cache
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Dec 7, 2010
Anyone knows the difference between a socket and TCP connection for connecting to an external system?
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Jul 22, 2010
I am facing an issue where the process starts hanging. When I closely look at the logs I come to know that some of the child processes that are forked by the parent process are not finished.
1) Is it possible that the child processes that are not finished occupy the socket memory of the parent process and ultimately a point is reached where no socket memory is available to fork new child processes.
2) What is the standard limit of socket memory in linux?
3) What is the fate of such child processes (as I have mentioned above)?
4) How to debug such cases so that the exact problematic area is identified?
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Aug 25, 2010
Is that possible that SHM shared memory is counted as cache memory on Linux with kernel 2.6.18?If find it really odd since this memory is not file backed, but I have a piece of code that loads data using shm_open+mmap, and it generates an amount of cache memory in /proc/meminfo that corresponds exactly to the amount of shared memory (I load that data from a file but I am using posix_fadvise(fd,0,0,POSIX_FADV_DONTNEED) to ensure this file is not cached and I made sure that it is working as expected). As far as I know SHM memory was not tagged as cache memory with kernel 2.6.9.If it is the case it is really unfortunate since normally cache memory can be considered to be part of the "available" memory since it can be flushed promptly but this is clearly not the case with SHM memory... Is there an easy way to get the total amount of used SHM memory on a system?
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Apr 29, 2009
I'm fairly new to linux Red Hat. We are running Rhel 3 on our VM's. We ran into a issue, (Bug 121801 - athlon-smp kernel does not support >4GB of RAM. what the stepos are to upgrade the existing kernel to the new i686? .
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Feb 10, 2010
I opened a socket with sock_create()... bind() listen() accept().
Then, the far end closes the connection.
I want to close the near end, so I can re-open for the next connection.
But there is no close(), and sock_release() crashes the kernel.
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Jun 18, 2010
i'm trying to follow this guide: [URL] (THE GUIDE AT THE BOTTOM OF THE COMMENTS, NOT THE GUIDE IN THE OP) EDIT: Managed to install the GUI XHydra, but when I tested it out I get this error:
[Code]..
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Jan 11, 2010
let me know how to clear cache memory ( RHEL 5.1 ) as it consumes almost 100% physical memory.
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Feb 3, 2010
we found that if we use 'top' to show the memory usage of a server (SuSe Linux 10), we can get virtual memory usage as well as 'Resident memory' usage. For virtual mem or a particular process, it is around 1.1GB, which is large but for resident memory, it only consumes 300MB. Are there anyone who knows what the differences are? I would also like to know whether the difference (1.1GB - 300MB) = 800MB are actually available for use by other applications in the system.
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Mar 24, 2011
I have written the Client-Server program to test my ethernet by using UDP protocol.
Server IP : 192.168.0.254
Client IP : 192.168.0.1
While Running the program I am getting some printk messages on Server machine.
What is the meaning of following statement that I am getting from debug statements
( /var/log/messages )
UDP: short packet: From 192.168.0.1:43898 418/416 to 192.168.0.254:7000
printk: 5 messages suppressed.
UDP: short packet: From 192.168.0.1:43898 556/553 to 192.168.0.254:7000
printk: 4 messages suppressed.
Only printk messages are printing in my Server console ( IP : 192.168.0.254 ).
printk: 5 messages suppressed.
printk: 5 messages suppressed.
printk: 4 messages suppressed.
printk: 2 messages suppressed.
printk: 4 messages suppressed.
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Jan 8, 2011
I have been setting up a vps I got out with bhost.net, with CentOS installed. I've been learning and have set up everying I need with the exception of ftp/sftp.
Using yum I installed vsftpd and ran into problems, thinking it was something I might of done I did a fresh install of CentOS and I still recieve the same problem on a fresh install so it is nothing I have done to the server.
The problem is when connecting via a sftp client I get an out of memory error. This error is listed in the putty faq ( url ) under A.7.5, there is a brief explaintion of the cure under A.7.6.
there is mention of a login script but I don't know where this is located. I'm a novice at Linux but by no means incompotent when it comes to computing.
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Jun 4, 2010
I want to configure socket timer to release socket(port) once the connection is terminated. Do we have something in Linux OS to configure this delay to release socket?.
Any command, link or man-page anything will be helpful.
I browsed a lot but unable to find it.
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May 5, 2009
I had installed Fedora 10
Below is the output of uname -a
Linux 2.6.27.5-117.fc10.i686.PAE #1 SMP Tue Nov 18 12:08:10 EST 2008 i686 i686 i386 GNU/Linux
I need to enable telnet service on it, then found xinetd and telnet-server not installed,
Then I had installed below
First I had installed Xinetd: xinetd-2.3.14-21.fc10.i386.rpm
then I had installed telnet-server: xinetd-2.3.14-21.fc10.i386.rpm
After installation I executed below commands
Service xinetd start
Chkconfig xinetd on
Chkconfig telnet on
Service iptables stop
Chkconfig iptables off
Iptables �F
After I had tried telnet localhost ----IT FAILED
when I run telnet server manually by issuing the below command
/usr/sbin/in.telnetd, I get below error
[COLOR="Red"]/usr/sbin/in.telnetd: getpeername: Socket operation on non-socket[/COLOR]
I have other system running same OS, I had followed the same steps discussed above to enable telnet, It works fine on it.
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Mar 28, 2010
Im getting this error when i try to run mysql from a shell
Code:
ERROR 2002 (HY0000): can't connect to local MySQL server through socket
I have installed MySQL over yum on fedora.
but the path and file /var/lib/mysql/mysql.sock does not exist on my system?
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Apr 11, 2010
I've tried /etc/init.d/mysql start, and it actually starts, or at least, it doesn't error out. But when I do pgrep mysql I get nothing, and when I try to login with mysql -p as root, I get
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
None of my other logins work, either, but since pgrep mysql didn't work, it's clear that MySQL just isn't running. I tried uninstalling and reinstalling mysql-server via apt-get, but I get the same thing. The logs in /var/log/syslog show this:
Apr 11 14:31:26 /etc/init.d/mysql[9774]: #007/usr/bin/mysqladmin: connect to server at 'localhost' failed
Apr 11 14:31:26 /etc/init.d/mysql[9774]: error: 'Can't connect to local MySQL server
[code].....
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Apr 24, 2011
I have an e-mail production server that has been running fine for almost two years.
Notice mail was not serving today and login to a bunch of errors in messages
However, I think they are all from not being able to access MySQL and when I:
mysql -u root -p
I get:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)
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Jul 6, 2010
i'm writing a simple program of client socket program. Here below is the code sample which i'm writing...
Code:
//tcp_client.c
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include<string.h>
#include<stdlib.h>
[Code].....
the above code works fine.if we copmile and run ./a.exe 192.xx.xx.xxx 1111 and press enter it works fine..everytime it asks "Please enter the message: " and if give that will be displayed in server. but my problem is i dont want to print everytime "Please enter the message: " i just want to feed some words one by one to the socket.
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Mar 30, 2009
im getting that error in my code for some reason. I compiled my code, and when i try to run this server it throws me an error on my call to setsocketopt(). The only way it can reach that part of my loop is if it succeeds when it calls sock() so I dont understand why the error says its an operation on a non-socket. Im just trying to set up a server to pass messages from a client to it a viceversa. Here is the code:
Code:
int main()
{
int socket_fd, new_socket_fd, k;
struct addrinfo hints, *server_info, *p;
struct sockaddr_storage peer_address;
code....
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Oct 5, 2010
I have a server that is on both a standard network and a virtual network, as follows: server1 attached to standard network server1 acting as Dom0 with two linux DomU guests (under Xen) I only have one network card. How do I configure server1 to have a different hostname on the standard network than on the virtual network? Here are the relevant network configuration files for server1:
/etc/sysconfig/network-scripts/ifcfg-eth0:1
DEVICE=eth0:1
BOOTPROTO=none
NETMASK=255.255.255.0
IPADDR=192.168.122.9
[Code]...
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Sep 15, 2009
We are seeing recv err on socket 31: 0x36. What could be meaning of the error?.
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Jan 12, 2010
i have installed kernel-xen to my centos 5.4 server ( with yum install kernel-xen ). My server has got 8192 mb pyschal ram with PAE kernel; but after i installed xen kernel to system, my ram is being 7919664KB....how can i fix this ? i want see 8192MB RAM with xen kernel
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Jul 14, 2009
How to use execv from kernel space to call a user space program writtenfor socket prog.
I tried to write code for socket in kernel but its not working.
Socket code in kernel is also needed.
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Dec 8, 2010
I have a server for virtualization (Xen) and when I do a free -m it does not show all the memory (which should be 64GB), it shows 32GB (a considerable difference, isnt it?).
My hardware is a Dell R410 server:
Dual Xeon 5530
64GB DDR3
4x SAS 500GB in RAID 10
I tried to compile Xen 4.0.1 but I can't solve a compile error that it gives me (if you want to take a look: [URL]) that is the end of the compilation including the error. But, I installed Xen from yum directly after reformating the HD and it works fine now.
My kernel version: 2.6.18-194.26.1.el5xen x86_64
CentOS 5.5 64 bit
[root@server1 xen-4.0.1]# cat /proc/meminfo
MemTotal: 33554432 kB
[code]....
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May 4, 2010
I have a query regarding top & virtual memory. When we run top it show VIRT (Virtual Mem), RES (Resident Mem) & SHR (Shared Memory). The total virtual memory of my machine is 4 GBs (2 GB RAM + 2 GB Swap), but still I am able to see a process showing 4000m virtual memory column. what it means, as its show VIRT Mem more than actual available VIRT memory
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Jul 20, 2011
I'm having a problem at the moment (sometimes), tail -f cache.log
[Code].....
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Jan 31, 2010
I am pragmatically trying to upload a list of files from my client machine to a proFTPd server I have running on Ubuntu. Every time I get several (around fifty) files into the transfer, I get the following error: Quote: Connection reset by peer: socket write error
I am able to remotely upload 25,000 small files of ~ 1K in size, but when I go to upload hundreds of 2-4 Mb files, I get a socket write error. Am I using up all available sockets before they can be released? If so, how do I release the sockets? If not, what does this error mean and why am I getting it?
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May 20, 2010
My computer has 4GB installed but for some reason I could only see the 2 of the 4. At first I thought that this was because the XEN virtual operating system manager was running but even after I turned it off the problem exists. I could only see and use the 2GB of memory.
Code:
free -m
total used free shared buffers cached
Mem: 1914 1874 39 0 9 295
-/+ buffers/cache: 1570 343
Swap: 2062 1934 128
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Mar 17, 2011
I want to built a Chat Program (based on Socket connection) between client and server. I use the GTK+ &GLADE graphic tool. Can you send me the code for this program or any material to learn. Also, I want to know how to show the input to text view (in GTK+&Glade).
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Jan 8, 2009
I used this Tutorial, to create a php chat daemon. But now I'm getting to the point where i've reach the max socket connexion on my centOs box... I have to much users. Which is 120. when there's more then that number of users in the chat .. things start to get messy. I have tried to change the SOMAXCONN kernel variable without success. I'm sure there is a solution to boost the number of user my chat can handle... (My server is dedicated to the chat).
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