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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
commitdee4dcba78baf712cab403d47d9db319ab7f95d6 (patch)
tree418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/zero-shot/108/performance/719
parent4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff)
downloademulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz
emulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip
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+performance: 0.996
+graphic: 0.977
+network: 0.956
+device: 0.890
+PID: 0.780
+semantic: 0.756
+debug: 0.737
+socket: 0.731
+vnc: 0.705
+permissions: 0.609
+KVM: 0.555
+boot: 0.419
+other: 0.348
+files: 0.168
+
+live migration's performance with compression enabled is much worse than compression disabled
+Description of problem:
+
+Steps to 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 information:
+