The tag has no usage guidance.

learn more… | top users | synonyms

0
votes
0answers
11 views

cached response always buffered on disk nginx

I'm using nginx as reverse proxy, and it also use cache (proxy_cache) and buffering (proxy_buffering) at the same time. I've set proxy_buffers to really high value (proxy_buffers 256 64k;) but nginx ...
1
vote
0answers
43 views

nginx proxy_buffering and send response to client immediately

To break the question down to one sentence: Is it Possible to turn on proxy_buffering in nginx, but sending the response of the backend server immediately to the client when the client is fast enough ...
1
vote
0answers
107 views

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 ...
0
votes
1answer
103 views

What do “key buffer size” and “total MyISAM indexes” unit sizes mean?

I ran MySQLTuner on my database to check if things are working correctly and optimally, but I was confused as to the units used for these two values. Here is what the output looks like for ...
0
votes
0answers
28 views

MySQL read-buffer-size overflow

What will happen if a low value was assigned in my.cnf to any of the per-thread buffers, when it fills? I'm thinking of possible scenarios: MySQL will gracefully call realloc for additional block ...
0
votes
0answers
97 views

reducing bufferbloat in linux web server

I'm looking for all the buffers I can tune in linux as well as their order of operation. On the server, nearly all operations are run over the TCP protocol. I want to eliminate bufferbloat to improve ...
0
votes
1answer
96 views

Bitnami apache + php-fpm stack can't disable buffer

I'm trying to get my service running that requires it output without a buffer. Is it possible to use php-fpm without a buffer with apache? <IfDefine USE_PHP_FPM> <Proxy ...
3
votes
2answers
192 views

Linux: What application is using my ram cache

I am wondering if I can see which application is using my ram buffer and cache. Also is there any time specified in kernel, when data is dropped from cache. My Ram is being full used by buffer and ...
0
votes
1answer
44 views

linux pseudo files for rotating streams

i've got some problem with rotating files. Situation is next: one program like wireshark or vlc dumps all to one file, say netstream.bin If i mv netstream.bin to netstream.bin.rotate program will ...
0
votes
1answer
79 views

Set MySQL innodb buffer pool size on IIS7

I am using VPS, Windows 2008 r2, IIS7, MYSQL 5.1.73, Hardward Config: Ram 2GB , Hardisk 40GB On this VPS only 1 .NET application is running. Application is currently using by only 5 users. I found ...
3
votes
1answer
3k views

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: ...
0
votes
0answers
127 views

How do I check network buffer queue size?

I'm currently trying to investigate how queue size varies affect throughput in network. Hence, I've tried googling around but to no avail. Hopefully someone here could shed some light on me. How do ...
1
vote
1answer
108 views

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 - ...
3
votes
1answer
4k views

“No buffer space available” on connect

I'm seeing the error message "No buffer space available" when processes call "connect" on a Linux virtual machine. I'm having trouble tracking down the cause - hopefully someone can help! I've ...
8
votes
1answer
14k views

An upstream response is buffered to a temporary file

I have a rather large and slow (complex data, complex frontend) web application build in RoR and served by Puma with nginx as reverse proxy. Looking at the nginx error log I see quite a few entries ...
1
vote
2answers
63 views

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 ...
4
votes
2answers
6k views

How to share the clipboard between Windows Server 2008R2 and a guest running Ubuntu 12.04? [closed]

I use Windows Server 2008 R2 with Hyper-V and a guest running Ubuntu 12.04 LTS. How can I share the clipboard between Windows Server 2008R2 and a guest running Ubuntu 12.04? UPDATE What protocols ...
1
vote
1answer
2k views

Cisco Port Buffer Memory

How can the total amount of port buffer memory be determined for Cisco switches? Cisco doesn't seem to publish this data anywhere as part of the hardware specifications, but the information seems ...
0
votes
1answer
486 views

Mass memory used, buffer free, no apps started

Have searched for many times before asking for my problem. I've 6gb RAM, 4 currently used, 2 free, buffers are low # free -m total used free shared buffers cached ...
5
votes
2answers
4k views

Netstat -s showing (and growing) “packets pruned from receive queue” and “packets collapsed in receive queue”

we are seeing the following: [root@primary data]# netstat -s | grep buffer ; sleep 10 ; netstat -s | grep buffer 20560 packets pruned from receive queue because of socket buffer overrun ...
2
votes
1answer
767 views

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 ...
1
vote
1answer
2k views

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: ...
0
votes
2answers
272 views

MySQL: Increased buffer pool, ibdata1 corrupt?

I tried increasing innodb_buffer_pool_size via my.cnf from default 128m to 256m, but on restart attempt, mysql shutdown failed with: 130125 11:49:55 InnoDB: Initializing buffer pool, size = 256.0M ...
2
votes
1answer
248 views

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 ...
2
votes
1answer
676 views

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 ...
4
votes
1answer
2k views

How can I force a merge of all WAL files in pg_xlog back into my base “data” directory?

Question: Is there a way to tell Postgres (9.2) to "merge all WAL files in pg_xlog back into the non-WAL data files, and then delete all WAL files successfully merged?" I would like to be able to ...
-2
votes
1answer
116 views

Packet Buffer size in D-link DES-3552

What is the Packet Buffer size in D-link DES-3552? I haven't found this information on any site (including official).
0
votes
1answer
1k views

Choosing a buffer size for large file transfer - SSH

I am trying to transfer large files over an internal network using Secure Shell SSH Client (3.2.9). The default buffer size is 32KB, which should be plenty, but my specific case makes me wonder if I ...
2
votes
0answers
114 views

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 ...
3
votes
2answers
17k views

join_buffer_size >= 4 M is not advised?

I get this message from MysqlTunner.pl: join_buffer_size >= 4 M This is not advised On the other hand, I read in Debian's my.cnf guide about jont_buffer_size that: This buffer is used for ...
1
vote
2answers
1k views

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 ...
2
votes
2answers
2k views

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 ...
0
votes
1answer
355 views

Is there a system wide limit to the total amount of socket & queue buffer space?

in Linux I know that you can tweak the maximum buffer size per socket connection, but is there a system wide limit to the amount of space the buffers can take up and does this apply equally to the ...
2
votes
1answer
439 views

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 ...
-3
votes
1answer
154 views

Disk buffer: why does it even exist in many disk controllers? [closed]

When you request disk for data, it usually first gets transferred to the disk buffer in the disk controller, and then it gets sent up to RAM (and thus stored in memory). I was just wondering what the ...
5
votes
2answers
939 views

Linux disable disk cache for a single command

Our server is performing decently, but when backups or other scan processes run it will tank the entire server. Something like clamd will run and scan many files. While we expect slow performance, ...
5
votes
4answers
1k views

Comet with uwsgi and nginx, how to turn off the output buffer?

How can I prevent Nginx from buffering the output of my uwsgi app? For my comet style application I'm using long polling and the requests are now buffered. I tried to reduce the size of the buffers, ...