Troubleshooting Memory and Networking Issues

Hello all,

I've just amended the settings for my node as recommended here in the Troubleshooting Memory and Networking Issues guide

http://library.linode.com/troubleshooti … networking">http://library.linode.com/troubleshooting/memory-networking

Now, not always, but quite frequently response and load times are quite slow.

I dont have massive sites, just a couple of them with traffic on one 5000 a day and the other 3000+.

Sites are running on wordpress and also use W3 Total Cache.

I suspect it could be due to MySQL Low-Memory Settings, but as I am not an expert in this area I am not sure.

Could you please help out? Maybe recommend higher settings for Apache or MySQL?

Thank you in advance.

Dmitri

2 Replies

> key_buffer = 16K
Don't use it, or MySQL will scan full table on each query.

Set this value to RAM*25% (128M at Linode 512, for example).

Do you currently have memory issues? Just following that recommendations without reasons can raise more issues.
> table_cache = 4

sort_buffer = 64K
This settings can kill performance too.

Also you can read my comment about tuning here.

Thanks for a quick reply. I will try as you sugegsted and post the outcome later.

All the best,

Dmitri

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