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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/719.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/719.toml | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/719.toml b/gitlab/issues/target_missing/host_missing/accel_missing/719.toml new file mode 100644 index 000000000..dae9ef2fd --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_missing/719.toml @@ -0,0 +1,27 @@ +id = 719 +title = "live migration's performance with compression enabled is much worse than compression disabled" +state = "closed" +created_at = "2021-11-11T14:30:54.128Z" +closed_at = "2021-11-16T10:30:04.593Z" +labels = ["Migration"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/719" +host-os = "SLE15" +host-arch = "X86" +qemu-version = "QEMU emulator version 6.1.50 (v6.1.0-2205-g63ed851de4-dirty" +guest-os = "openSUSE-15.3" +guest-arch = "x86" +description = """""" +reproduce = """1. Run QEMU the Guests with 1Gpbs network on source host and destination host with QEMU command line +2. Run some memory work loads on Guest, for example, ./memtester 1G 1 +3. Set migration parameters in QEMU monitor. On source and destination, + execute: #migrate_set_capability compress on + Other compression parameters are all default. +4. Run migrate command, # migrate -d tcp:10.156.208.154:4000 +5. The results: + - without compression： total time: 197366 ms throughput: 937.81 mbps transferred Ram: 22593703 kbytes + - with compression: total time: 281711 ms throughput: 90.24 mbps transferred Ram: 3102898 kbytes + +When compression is enabled, the compression transferred ram is reduced a lot. But the throughput is down badly. +The total time of live migration with compression is longer than without compression. +I tried with 100G network bandwidth, it also has the same problem.""" +additional = """""" |