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From: | Peter Lieven |
Subject: | Re: [Qemu-devel] Qemu and heavily increased RSS usage |
Date: | Thu, 23 Jun 2016 17:31:29 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 |
Am 23.06.2016 um 17:21 schrieb Paolo Bonzini:
On 23/06/2016 16:58, Peter Lieven wrote:commit ba3f4f64b0e941b9e03568b826746941bef071f9 Author: Paolo Bonzini <address@hidden> Date: Wed Jan 21 12:09:14 2015 +0100 exec: RCUify AddressSpaceDispatch Note that even after this patch, most callers of address_space_* functions must still be under the big QEMU lock, otherwise the memory region returned by address_space_translate can disappear as soon as address_space_translate returns. This will be fixed in the next part of this series. Reviewed-by: Fam Zheng <address@hidden> Signed-off-by: Paolo Bonzini <address@hidden> @Paolo, @Fam, any idea?When you use RCU, freeing stuff is delayed a bit.
define a bit? I face the issue that it seems (some) stuff is actually never freed... Consider the following simple vServer:./x86_64-softmmu/qemu-system-x86_64 -enable-kvm -M pc-i440fx-2.1 -nodefaults -serial null -parallel null -m 4096 -smp 4,sockets=1,cores=4,threads=1 -monitor tcp:0:4004,server,nowait,nodelay -mem-path /hugepages -mem-prealloc -cpu Westmere,enforce -rtc base=utc -no-hpet -vga vmware -pidfile /tmp/qemu.pid
head at 9d82b5a VmHWM: 22660 kB VmRSS: 22656 kB head at 79e2b9a VmHWM: 32948 kB VmRSS: 32948 kB even after several minutes. Thanks, Peter
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