From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <pbs-devel-bounces@lists.proxmox.com>
Received: from firstgate.proxmox.com (firstgate.proxmox.com [IPv6:2a01:7e0:0:424::9])
by lore.proxmox.com (Postfix) with ESMTPS id 580911FF16B
for <inbox@lore.proxmox.com>; Thu, 3 Apr 2025 14:28:02 +0200 (CEST)
Received: from firstgate.proxmox.com (localhost [127.0.0.1])
by firstgate.proxmox.com (Proxmox) with ESMTP id 1EC5C3F4B8;
Thu, 3 Apr 2025 14:27:51 +0200 (CEST)
From: Christian Ebner <c.ebner@proxmox.com>
To: pbs-devel@lists.proxmox.com
Date: Thu, 3 Apr 2025 14:27:30 +0200
Message-Id: <20250403122732.369087-2-c.ebner@proxmox.com>
X-Mailer: git-send-email 2.39.5
In-Reply-To: <20250403122732.369087-1-c.ebner@proxmox.com>
References: <20250403122732.369087-1-c.ebner@proxmox.com>
MIME-Version: 1.0
X-SPAM-LEVEL: Spam detection results: 0
AWL 0.031 Adjusted score from AWL reputation of From: address
BAYES_00 -1.9 Bayes spam probability is 0 to 1%
DMARC_MISSING 0.1 Missing DMARC policy
KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment
SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record
SPF_PASS -0.001 SPF: sender matches SPF record
Subject: [pbs-devel] [PATCH proxmox-backup 2/4] garbage collection: set
phase1 LRU cache capacity by tuning option
X-BeenThere: pbs-devel@lists.proxmox.com
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Proxmox Backup Server development discussion
<pbs-devel.lists.proxmox.com>
List-Unsubscribe: <https://lists.proxmox.com/cgi-bin/mailman/options/pbs-devel>,
<mailto:pbs-devel-request@lists.proxmox.com?subject=unsubscribe>
List-Archive: <http://lists.proxmox.com/pipermail/pbs-devel/>
List-Post: <mailto:pbs-devel@lists.proxmox.com>
List-Help: <mailto:pbs-devel-request@lists.proxmox.com?subject=help>
List-Subscribe: <https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel>,
<mailto:pbs-devel-request@lists.proxmox.com?subject=subscribe>
Reply-To: Proxmox Backup Server development discussion
<pbs-devel@lists.proxmox.com>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: pbs-devel-bounces@lists.proxmox.com
Sender: "pbs-devel" <pbs-devel-bounces@lists.proxmox.com>
Allow to control the capacity of the cache used to track recently
touched chunks via the configured value in the datastore tuning
options. Log the configured value to the task log, if an explicit
value is set, allowing the user to confirm the setting and debug.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
pbs-datastore/src/datastore.rs | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index 008449e51..aa9a033b4 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -1113,6 +1113,7 @@ impl DataStore {
&self,
status: &mut GarbageCollectionStatus,
worker: &dyn WorkerTaskContext,
+ cache_capacity: usize,
) -> Result<(), Error> {
// Iterate twice over the datastore to fetch index files, even if this comes with an
// additional runtime cost:
@@ -1128,7 +1129,7 @@ impl DataStore {
let mut unprocessed_index_list = self.list_index_files()?;
let index_count = unprocessed_index_list.len();
- let mut chunk_lru_cache = LruCache::new(1024 * 1024);
+ let mut chunk_lru_cache = LruCache::new(cache_capacity);
let mut processed_index_files = 0;
let mut last_percentage: usize = 0;
@@ -1237,9 +1238,20 @@ impl DataStore {
..Default::default()
};
+ let tuning: DatastoreTuning = serde_json::from_value(
+ DatastoreTuning::API_SCHEMA
+ .parse_property_string(gc_store_config.tuning.as_deref().unwrap_or(""))?,
+ )?;
+ let gc_cache_capacity = if let Some(capacity) = tuning.gc_cache_capacity {
+ info!("Using cache capacity of {capacity} (multiples of 1024 chunk digests).");
+ capacity * 1024
+ } else {
+ 1024 * 1024
+ };
+
info!("Start GC phase1 (mark used chunks)");
- self.mark_used_chunks(&mut gc_status, worker)
+ self.mark_used_chunks(&mut gc_status, worker, gc_cache_capacity)
.context("marking used chunks failed")?;
info!("Start GC phase2 (sweep unused chunks)");
--
2.39.5
_______________________________________________
pbs-devel mailing list
pbs-devel@lists.proxmox.com
https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel