On 6/30/22 13:27, Ilya Maximets wrote:
> Memory trimming was introduced in OVS 2.15 and didn't cause any
> issues in production environments since then, while allowing
> ovsdb-sever to consume a lot less memory in high scale OVN
> deployments.  Enabling by default to make it easier to use.
> 
> Signed-off-by: Ilya Maximets <[email protected]>
> ---
>  NEWS                 | 3 +++
>  ovsdb/ovsdb-server.c | 2 +-
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/NEWS b/NEWS
> index 994fdf6a9..ca6b4e5a3 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -21,6 +21,9 @@ Post-v2.17.0
>         configuration in a clustered databse independently for each server.
>         E.g. for listening on unique addresses.  See the ovsdb.local-config.5
>         manpage for schema details.
> +     * Returning unused memory to the OS after the database compaction is now
> +       enabled by default.  Use 'ovsdb-server/memory-trim-on-compaction off'
> +       unixctl command to disable.
>     - OVSDB-IDL:
>       * New monitor mode flag, OVSDB_IDL_WRITE_CHANGED_ONLY, allowing
>         applications to relax atomicity requirements when dealing with
> diff --git a/ovsdb/ovsdb-server.c b/ovsdb/ovsdb-server.c
> index 5549b4e3a..ddae685fd 100644
> --- a/ovsdb/ovsdb-server.c
> +++ b/ovsdb/ovsdb-server.c
> @@ -80,7 +80,7 @@ static char *ssl_ciphers;
>  static bool bootstrap_ca_cert;
>  
>  /* Try to reclaim heap memory back to system after DB compaction. */
> -static bool trim_memory = false;
> +static bool trim_memory = true;
>  
>  static unixctl_cb_func ovsdb_server_exit;
>  static unixctl_cb_func ovsdb_server_compact;

I didn't compile or test this but it's obviously correct and it's how we
deploy ovsdb-server in large scale OVN setups so:

Acked-by: Dumitru Ceara <[email protected]>

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