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3
votes
2answers
104 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 ...
2
votes
1answer
227 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 ...
1
vote
1answer
76 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 - ...
1
vote
1answer
673 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 ...
0
votes
1answer
63 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 ...
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 ...
0
votes
0answers
13 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
0answers
98 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 ...