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Re: [Qemu-devel] Qemu and heavily increased RSS usage

From: Paolo Bonzini
Subject: Re: [Qemu-devel] Qemu and heavily increased RSS usage
Date: Thu, 23 Jun 2016 18:53:04 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1

On 23/06/2016 18:19, Peter Lieven wrote:
> Mhh, so your idea could be right. But what to do now? The introduction
> of RCU obviously increases the short term RSS usage. But thats never
> corrected as it seems.
> I see this behaviour with kernel 3.19 and kernel 4.4

If it's 10M nothing.  If there is a 100M regression that is also caused
by RCU, we have to give up on it for that data structure, or mmap/munmap
the affected data structures.


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