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Questions tagged [buffer]

58 questions
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OpenVPN sndbuf and rcvbuf

I would like to know what is the difference between the sndbuf and rcvbuf buffer used by OpenVPN and net.core.w/rmem_default or net.ipv4.tcp_r/wmem. What does OpenVPN do when some value a provided for these parameter in the config. I read that if…
Alo
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ESXi 5 Hypervisor fatal boot error

For over 2 years now I've been running ESXi 5 just fine from a pen drive. I recently had to move the server to a new location and started seeing an issue. Once the system starts to boot, I get: 'Error Loading /s.v00 Fatal error: 6 (Buffer too…
ess
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Is there a way to get current txqueue utilization on e.g. eth0 or tun device?

I have detected drops on my tun0 interface. They seem to have been caused by low txqueuelen setting. Now as I increased the txqueuelen value for the network device and there are no more drops yet - I am wondering is there any way to get actual…
grandrew
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security_error_ring_buffer_recorded in system health log - what does it mean?

Our company is running a few servers for a couple of websites. The server are running Windows Server 2012 and for databases we have MS SQL Server 2012. Today I was checking the log files located in: "C:\Program Files\Microsoft SQL…
Levi
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Linux buffer memory always stays at zero

One of my hosted server is a Xen guest running Debian and linux kernel 2.6.32 then 2.6.38. It has been running fine for quite some time (more than a year) but I recently noticed something weird. For a few months, the part of the memory allocated…
Lætitia
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Nginx + MP4 module: buffer limits are being ignored

I have an nginx/1.2.3 server compiled with --with-http_mp4_module as a pseudostreaming server. Streaming and seeking works fine except buffering. Tt seems like the buffer directives are being completely ignored. Here are the location declaration for…
Panagiotis Moustafellos
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Nginx : Mp4 videos not seeking and starting immediately

I learned how to compile nginx with mp4 module. I also added proper directive in my website conf. I am trying to play a mp4 using JW player and flow player. But the video doesn't buffer and play like youtube and similar sites. It takes a long time…
xperator
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3 answers

MariaDB reduce buffer RAM usage per thread

I was looking for an answer to this question, but couldn't find it anywhere. I want to reduce the memory usage per each database connection. Here is what mysql tuner currently says about memory usage for one of my databases: [--] Physical Memory …
djaho
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Network Buffer Usage

I am facing some issues with my Application, and am curious to know the network buffer usage at any given moment. I am using a CentOS 6 linux Machine. I know the Default values are present in /proc/sys/net/core/ But i have not been successful in…
Vijit Jain
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1 answer

Mysql crashing due to InnoDB not able to allocate memory

MySQL crashes every now and then due to, I believe, a large request hitting it above the innodb-buffer-pool-size set in my.cnf (currently at 210M), which I needed to set for mysql to start in the first place. Here are the error logs: 130518…
slyv
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Tcp window size won't go above 130048

I have 2 servers set up with about 80ms latency between them. Both are centos 6 and run a java app that transfers data from on location to another. Both are on 1gbps connections. I have been trying different sysctl settings and different send &…
Roger
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nginx configuring uwsgi and gzip buffers for different usage scenarios

I'm trying to configure two URL path groups for relatively different usage scenarios and resource consumption in nginx. Both are served by same uwsgi application. Group 1: Regular HTML pages up to cca 128k in size, default Group 2: Large XML…
V. K.
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Solaris/UNIX: Does snoop have the potential to slow down network traffic?

This is the way I see it. A copy of the network activity is written to a buffer, and snoop reads from the buffer. As long as snoop is able to get the data out fast enough (writing directly to a file is faster than writing to a terminal or a bziper),…
700 Software
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Encapsulate udp traffic info tcp with on-disk buffering

My ipfix flow receiver supports only udp (can't be replaced), which is not resistant to network failures and then I'm loosing flow data. To improve this I'm thinking about using socat, mkfifo between flow exporter and flow receiver. But I dont know,…
Supermario
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How to check buffer pool size in sql server?

Is there any way to find total allocated buffer pool size in sql server.In mysql we can find it by using the variable innodb_buffer_pool_size.Is there any equivalent for that in sql server?
SujithTee
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