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.
01a7a000-3b4efe000 rw-p 00000000 00:00 0 [heap] Size: 15520272 kB Rss: 14421836 kB Pss: 14421836 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 1164 kB Private_Dirty: 14420672 kB Referenced: 7485624 kB Anonymous: 14421836 kB AnonHugePages: 34816 kB Swap: 1098140 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Locked: 0 kB VmFlags: rd wr mr mw me ac sd My steps are: 1) start several VMs all equipped only 8G memory; 2) random combining those operations mentioned above; 3) after few hours, qemu's Virt memory and RSS both grow too large and never fall down; After analysis via /proc/$pid/smaps, I found the VMA of pc.ram does not occupy much memory but only becauses of heap section. I guess that has some relations of glibc or qemu rcu_thread, but i can not figure it out. Is there some patches can fix this problem or does somebody have any idea? ________________________________
