diff mbox series

[bpf-next] bpf, net: Use bpf mem allocator for sk local storage

Message ID 20231025224151.385719-1-thinker.li@gmail.com (mailing list archive)
State New, archived
Delegated to: BPF
Headers show
Series [bpf-next] bpf, net: Use bpf mem allocator for sk local storage | expand

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Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1365 this patch: 1365
netdev/cc_maintainers warning 6 maintainers not CCed: pabeni@redhat.com edumazet@google.com kuba@kernel.org martin.lau@kernel.org yhs@fb.com davem@davemloft.net
netdev/build_clang success Errors and warnings before: 1386 this patch: 1386
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1390 this patch: 1390
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
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Commit Message

Kui-Feng Lee Oct. 25, 2023, 10:41 p.m. UTC 
From: Kui-Feng Lee <thinker.li@gmail.com>

Switching to BPF memory allocator improve the performance
of sk local storage in terms of creating and destroying.

Here is numbers w/ and w/o this changes.

 - ./bench local-storage-create --storage-type=socket
   - w/ change
     - creates  552.474 ± 1.186k/s (552.474k/prod), 2.10 kmallocs/create
   - w/o change
     - creates  469.960 ± 2.501k/s (469.960k/prod), 4.18 kmallocs/create
 - ./bench -p 4 local-storage-create --storage-type=socket
   - w/ change
     - creates 1236.614 ± 2.833k/s (309.153k/prod), 2.09 kmallocs/create
   - w/o change
     - creates 1120.524 ± 1.527k/s (280.131k/prod), 4.16 kmallocs/create
 - ./bench -p 4 local-storage-create --storage-type=socket \
      --batch-size=1024
   - w/ change
     - creates 1416.437 ± 37.679k/s (354.109k/prod), 2.06 kmallocs/create
   - w/o change
     - creates 1302.636 ± 13.649k/s (325.659k/prod), 4.12 kmallocs/create

Overall, with bpf memory allocator, it improves
 - 17% for single thread and with batch size 32,
 - 10% for 4 threads and with batch size 32, and
 - 8% for 4 threads and with batch size 1024.

Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
---
 net/core/bpf_sk_storage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/core/bpf_sk_storage.c b/net/core/bpf_sk_storage.c
index cca7594be92e..fdd9ad15cfe9 100644
--- a/net/core/bpf_sk_storage.c
+++ b/net/core/bpf_sk_storage.c
@@ -68,7 +68,7 @@  static void bpf_sk_storage_map_free(struct bpf_map *map)
 
 static struct bpf_map *bpf_sk_storage_map_alloc(union bpf_attr *attr)
 {
-	return bpf_local_storage_map_alloc(attr, &sk_cache, false);
+	return bpf_local_storage_map_alloc(attr, &sk_cache, true);
 }
 
 static int notsupp_get_next_key(struct bpf_map *map, void *key,