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Binlog router performance improvements

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This commit is contained in:
Mark Riddoch
2014-10-17 08:38:58 +01:00
parent f459bdfe04
commit 9b3dfc86fe
5 changed files with 47 additions and 9 deletions
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20
server/modules/routing/binlog/blr_master.c
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@ -695,6 +695,7 @@ static REP_HEADER phdr;
}
else if (hdr.flags != LOG_EVENT_ARTIFICIAL_F)
{
router->rotating = 1;
ptr = ptr + 5; // We don't put the first byte of the payload
// into the binlog file
blr_write_binlog_record(router, &hdr, ptr);
@ -717,6 +718,7 @@ static REP_HEADER phdr;
hdr.event_size,
router->binlog_name,
router->binlog_position)));
router->rotating = 1;
ptr += 5;
if (hdr.event_type == ROTATE_EVENT)
{
@ -852,6 +854,7 @@ char file[BINLOG_FNAMELEN+1];
router->stats.n_rotates++;
blr_file_rotate(router, file, pos);
}
router->rotating = 0;
}
/**
@ -943,9 +946,9 @@ int action;
{
/*
* The slave should be up to date, check that the binlog
* position matches the event we have to distribute or this
* is a rotate event. Send the event directly from memory to
* the slave.
* position matches the event we have to distribute or
* this is a rotate event. Send the event directly from
* memory to the slave.
*/
pkt = gwbuf_alloc(hdr->event_size + 5);
buf = GWBUF_DATA(pkt);
@ -976,6 +979,17 @@ int action;
}
spinlock_release(&slave->catch_lock);
}
else if (slave->binlog_pos == hdr->next_pos
&& strcmp(slave->binlogfile, router->binlog_name) == 0)
{
/*
* Slave has already read record from file, no
* need to distrbute this event
*/
spinlock_acquire(&slave->catch_lock);
slave->cstate &= ~CS_BUSY;
spinlock_release(&slave->catch_lock);
}
else if ((slave->binlog_pos > hdr->next_pos - hdr->event_size)
&& strcmp(slave->binlogfile, router->binlog_name) == 0)
{