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Re: [Qemu-devel] [Question] Qemu's Heap Becomes Very Large and Never Red
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [Question] Qemu's Heap Becomes Very Large and Never Reduce Down |
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Date: |
Wed, 15 Nov 2017 14:18:55 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 15/11/2017 04:14, Xulei (Stone) wrote:
> Hi, guys
>
> I met a strange problem, with qemu 2.8.1:
> qemu consumes too many heap memory after several operations and can not
> release them anymore:
> hot pulg/unplug disk & net, vnc connect/disconnect, guestOS reboot, etc.
Try with newer QEMU; until recently we used a lot of memory at startup,
but it was improved in 2.11.
However, I think Anthony also had a patch adding a malloc_trim call in
the RCU thread, which improved memory usage. Anthony, do you know if
this is still necessary in 2.11?
Thanks,
Paolo