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Inform the kernel when we won't need the disk reserve

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John Sully committed 2023-11-07 17:38:13 +00:00
1 parent 70503f6b58
commit 7e745ef9c5
1 file changed
+6 -2
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src/replication.cpp
+6 -2
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@@ -308,10 +308,14 @@ void resizeReplicationBacklog(long long newsize) {
auto cbActiveBacklog = cbPhase1 + g_pserver->repl_backlog_idx;
serverAssert(g_pserver->repl_backlog_histlen == cbActiveBacklog);
}
if (g_pserver->repl_backlog != g_pserver->repl_backlog_disk)
if (g_pserver->repl_backlog != g_pserver->repl_backlog_disk) {
zfree(g_pserver->repl_backlog);
else
} else {
serverLog(LL_NOTICE, "Returning to memory backed replication backlog");
// The kernel doesn't make promises with how it will manage the memory but users really want to
// see the RSS go down. So lets encourage that to happen.
madvise(g_pserver->repl_backlog_disk, cserver.repl_backlog_disk_size, MADV_DONTNEED);
}
g_pserver->repl_backlog = backlog;
g_pserver->repl_backlog_idx = g_pserver->repl_backlog_histlen;
if (g_pserver->repl_batch_idxStart >= 0) {