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04a061e4d1
When sending messages to clients, ctdb checks for EAGAIN error code and
schedules next write in the subsequent event loop. Using sys_write in
these places causes ctdb to loop hard till a client is able to read from
the socket. With real time scheduling, ctdb daemon spins consuming 100%
of CPU trying to write to the client sockets. This can be quite harmful
when running under VMs or machines with single CPU.
This regression was introduced when all read/write calls were replaced to
use sys_read/sys_write wrappers (
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|---|---|---|
| .. | ||
| cmdline.c | ||
| ctdb_fork.c | ||
| ctdb_io.c | ||
| ctdb_logging.c | ||
| ctdb_ltdb.c | ||
| ctdb_message.c | ||
| ctdb_util.c | ||
| rb_tree.c | ||
| rb_tree.h | ||
| system_aix.c | ||
| system_common.c | ||
| system_freebsd.c | ||
| system_gnu.c | ||
| system_kfreebsd.c | ||
| system_linux.c | ||
| system_util.c | ||