Re: Unexpected memory usage

[Salvatore Sanfilippo]

Hello, it looks like the internal main hash table rehashed, so it allocated two tables (the spike), incrementally moved everything in the new table, freed the old one. So you see the jump and then it goes down a bit. This is expected.

If you monitor the memory usage closely you'll see this happening multiple times as the number of keys grows.

Cheers,

Salvatore

On Sun, Apr 28, 2013 at 6:50 AM, <zl...@brightedge.com> wrote:

We are using redis 2.6.11 and storing a lot of urls in the hash. Since that we keep adding new urls, it is expected that the memory usage would go higher and higher. However, this week we got a problem since the growing of memory was unexpected. As you can see in the first picture attached, our count of urls just kept grow but memory usage jumped up around 1GB, even though it went down a little later but still too much higher. Another picture I attached is showing an exact same box storing some other urls, the memory usage looks normal to me.

Thanks,

Zhaobang

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Salvatore 'antirez' Sanfilippo
open source developer - VMware
http://invece.org

Beauty is more important in computing than anywhere else in technology because software is so complicated. Beauty is the ultimate defence against complexity.
       — David Gelernter

[zl...@brightedge.com]

Thanks Salvatore. Good to know.

 

Best,

Zhaobang