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liburing is a new optional dependency (WITH_URING=auto|yes|no) that replaces libaio when it is available. aio_uring: class which wraps io_uring stuff aio_uring::bind()/unbind(): optional optimization aio_uring::submit_io(): mutex prevents data race. liburing calls are thread-unsafe. But if you look into it's implementation you'll see atomic operations. They're used for synchronization between kernel and user-space only. That's why our own synchronization is still needed. For systemd, we add LimitMEMLOCK=524288 (ulimit -l 524288) because the io_uring_setup system call that is invoked by io_uring_queue_init() requests locked memory. The value was found empirically; with 262144, we would occasionally fail to enable io_uring when using the maximum values of innodb_read_io_threads=64 and innodb_write_io_threads=64. aio_uring::thread_routine(): Tolerate -EINTR return from io_uring_wait_cqe(), because it may occur on shutdown on Ubuntu 20.10 (Groovy Gorilla). This was mostly implemented by Eugene Kosov. Systemd integration and improved startup/shutdown error handling by Marko Mäkelä. |
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| .. | ||
| quicklz | ||
| backup_copy.cc | ||
| backup_copy.h | ||
| backup_debug.h | ||
| backup_mysql.cc | ||
| backup_mysql.h | ||
| backup_wsrep.h | ||
| changed_page_bitmap.cc | ||
| changed_page_bitmap.h | ||
| CMakeLists.txt | ||
| common.h | ||
| datasink.cc | ||
| datasink.h | ||
| ds_archive.cc | ||
| ds_archive.h | ||
| ds_buffer.cc | ||
| ds_buffer.h | ||
| ds_compress.cc | ||
| ds_compress.h | ||
| ds_local.cc | ||
| ds_local.h | ||
| ds_stdout.cc | ||
| ds_stdout.h | ||
| ds_tmpfile.cc | ||
| ds_tmpfile.h | ||
| ds_xbstream.cc | ||
| ds_xbstream.h | ||
| encryption_plugin.cc | ||
| encryption_plugin.h | ||
| fil_cur.cc | ||
| fil_cur.h | ||
| innobackupex.cc | ||
| innobackupex.h | ||
| read_filt.cc | ||
| read_filt.h | ||
| write_filt.cc | ||
| write_filt.h | ||
| wsrep.cc | ||
| xb_regex.h | ||
| xbcloud.cc | ||
| xbstream.cc | ||
| xbstream.h | ||
| xbstream_read.cc | ||
| xbstream_write.cc | ||
| xtrabackup.cc | ||
| xtrabackup.h | ||