| Message ID | 20220711211112.18951-1-leobras@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Zero copy improvements (QIOChannel + multifd) | expand |
* Leonardo Bras (leobras@redhat.com) wrote: > The first patch avoid spuriously returning 1 [*] when zero-copy flush is > attempted before any buffer was sent using MSG_ZEROCOPY. > > [*] zero-copy not being used, even though it's enabled and supported > by kernel > > The second patch introduces a new migration stat > (dirty-sync-missed-zero-copy) that will be used to keep track of [*]. > > The third patch keeps track of how many zero-copy flushes retured 1 [*] > > Changes since v3: > - Patch#1: Also checks if no packet was queued after the last flush > - Patch#2: Improve dirty-sync-missed-zero-copy doc and hmp print message > > Changes since v2: > - Documentation release number changed from 7.2 to 7.1 > - migration stat renamed from zero-copy-copied to > dirty-sync-missed-zero-copy > - Updated documentation to make it more user-friendly > > Changes since v1: > - Idea of using a warning replaced by using a migration stat counter Queued > > > > Leonardo Bras (3): > QIOChannelSocket: Fix zero-copy flush returning code 1 when nothing > sent > Add dirty-sync-missed-zero-copy migration stat > migration/multifd: Report to user when zerocopy not working > > qapi/migration.json | 7 ++++++- > migration/ram.h | 2 ++ > io/channel-socket.c | 8 +++++++- > migration/migration.c | 2 ++ > migration/multifd.c | 2 ++ > migration/ram.c | 5 +++++ > monitor/hmp-cmds.c | 5 +++++ > 7 files changed, 29 insertions(+), 2 deletions(-) > > -- > 2.37.0 > >
The first patch avoid spuriously returning 1 [*] when zero-copy flush is attempted before any buffer was sent using MSG_ZEROCOPY. [*] zero-copy not being used, even though it's enabled and supported by kernel The second patch introduces a new migration stat (dirty-sync-missed-zero-copy) that will be used to keep track of [*]. The third patch keeps track of how many zero-copy flushes retured 1 [*] Changes since v3: - Patch#1: Also checks if no packet was queued after the last flush - Patch#2: Improve dirty-sync-missed-zero-copy doc and hmp print message Changes since v2: - Documentation release number changed from 7.2 to 7.1 - migration stat renamed from zero-copy-copied to dirty-sync-missed-zero-copy - Updated documentation to make it more user-friendly Changes since v1: - Idea of using a warning replaced by using a migration stat counter Leonardo Bras (3): QIOChannelSocket: Fix zero-copy flush returning code 1 when nothing sent Add dirty-sync-missed-zero-copy migration stat migration/multifd: Report to user when zerocopy not working qapi/migration.json | 7 ++++++- migration/ram.h | 2 ++ io/channel-socket.c | 8 +++++++- migration/migration.c | 2 ++ migration/multifd.c | 2 ++ migration/ram.c | 5 +++++ monitor/hmp-cmds.c | 5 +++++ 7 files changed, 29 insertions(+), 2 deletions(-)