| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | docs/xbzrle: update 'cache miss rate' and 'encoding rate' to docs | Mao Zhongyi | 2020-06-17 | 1 | -2/+4 |
| | | | | | | | | Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200603080904.997083-9-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> | ||||
| * | monitor/hmp-cmds: improvements for the 'info migrate' | Mao Zhongyi | 2020-06-17 | 1 | -1/+1 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running: (qemu) info migrate globals: store-global-state: on only-migratable: off ... xbzrle transferred: 640892 kbytes xbzrle pages: 16645936 pages xbzrle cache miss: 1525426 xbzrle cache miss rate: 0.09 xbzrle encoding rate: 91.42 xbzrle overflow: 40896 ... compression pages: 377710 pages compression busy: 0 compression busy rate: 0.00 compressed size: 463169457 compression rate: 3.33 Add units for 'xbzrle cache miss' and 'compressed size', make it easier to read. Suggested-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200603080904.997083-8-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> | ||||
| * | xbzrle: update xbzrle doc | Mao Zhongyi | 2020-03-25 | 1 | -1/+6 |
| | | | | | | | | | | | | Add new parameter description, also: 1. Remove unsociable space. 2. Nit picking: s/two/2 in report Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200320143216.423374-1-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> | ||||
| * | docs/xbzrle: correction | Cao jin | 2016-10-13 | 1 | -2/+2 |
| | | | | | | | | | | 1. Default cache size is 64MB. 2. Semantics correction. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> | ||||
| * | xbzrle: optimize XBZRLE to decrease the cache misses | ChenLiang | 2015-01-15 | 1 | -0/+8 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid hot pages being replaced by others to remarkably decrease cache misses Sample results with the test program which quote from xbzrle.txt ran in vm:(migrate bandwidth:1GE and xbzrle cache size 8MB) the test program: include <stdlib.h> include <stdio.h> int main() { char *buf = (char *) calloc(4096, 4096); while (1) { int i; for (i = 0; i < 4096 * 4; i++) { buf[i * 4096 / 4]++; } printf("."); } } before this patch: virsh qemu-monitor-command test_vm '{"execute": "query-migrate"}' {"return":{"expected-downtime":1020,"xbzrle-cache":{"bytes":1108284, "cache-size":8388608,"cache-miss-rate":0.987013,"pages":18297,"overflow":8, "cache-miss":1228737},"status":"active","setup-time":10,"total-time":52398, "ram":{"total":12466991104,"remaining":1695744,"mbps":935.559472, "transferred":5780760580,"dirty-sync-counter":271,"duplicate":2878530, "dirty-pages-rate":29130,"skipped":0,"normal-bytes":5748592640, "normal":1403465}},"id":"libvirt-706"} 18k pages sent compressed in 52 seconds. cache-miss-rate is 98.7%, totally miss. after optimizing: virsh qemu-monitor-command test_vm '{"execute": "query-migrate"}' {"return":{"expected-downtime":2054,"xbzrle-cache":{"bytes":5066763, "cache-size":8388608,"cache-miss-rate":0.485924,"pages":194823,"overflow":0, "cache-miss":210653},"status":"active","setup-time":11,"total-time":18729, "ram":{"total":12466991104,"remaining":3895296,"mbps":937.663549, "transferred":1615042219,"dirty-sync-counter":98,"duplicate":2869840, "dirty-pages-rate":58781,"skipped":0,"normal-bytes":1588404224, "normal":387794}},"id":"libvirt-266"} 194k pages sent compressed in 18 seconds. The value of cache-miss-rate decrease to 48.59%. Signed-off-by: ChenLiang <chenliang88@huawei.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> | ||||
| * | Add XBZRLE documentation | Orit Wasserman | 2012-08-08 | 1 | -0/+128 |
| Signed-off-by: Orit Wasserman <owasserm@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> | |||||
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| Experimental fork of QEMU with video encoding patches | OpenSLX |
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