Re: [Qemu-devel] Abnormal observation during migration: too many "write-not-dirty" pages

[Chunguang Li]

Some more details about this experiment:

The host is running Ubuntu-16.04 with 4.4.0 Linux kernel and QEMU-2.5.1; The
guest is running Ubuntu-12.04, except Memcached with Ubuntu-16.04.

 

The exact numbers of the proportions of write-not-dirty pages for the first
2 pre-copy iterations: (0.445 means 44.5%)

Memcached:  0.445, 0.478

Zeusmp:      0.670, 0.727

Mcf:         0.808, 0.793

Bzip2:        0.464, 0.447

Milc:         0.341, 0.037

cactusADM:   0.280, 0.248

lbm:         0.090, 0.037

GemsFDTD:   0.226, 0.172

Bwaves:      0.069, 0.003

Astar:        0.113, 0.039

Xalancbmk:   0.082, 0.041

Wrf:         0.141, 0.073

 

Any advice? Looking forward to any response. Thank you.

 

Chunguang