From: "De Lara Guarch, Pablo" <pablo.de.lara.guarch@intel.com>
To: "Wang, Yipeng1" <yipeng1.wang@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "thomas@monjalon.net" <thomas@monjalon.net>,
"Tai, Charlie" <charlie.tai@intel.com>,
"Gobriel, Sameh" <sameh.gobriel@intel.com>,
"Mcnamara, John" <john.mcnamara@intel.com>
Subject: Re: [dpdk-dev] [PATCH v5 2/7] member: implement HT mode
Date: Tue, 3 Oct 2017 08:47:34 +0000 [thread overview]
Message-ID: <E115CCD9D858EF4F90C690B0DCB4D8976CC2950D@IRSMSX108.ger.corp.intel.com> (raw)
In-Reply-To: <1507005102-43821-3-git-send-email-yipeng1.wang@intel.com>
Hi Yipeng,
> -----Original Message-----
> From: Wang, Yipeng1
> Sent: Tuesday, October 3, 2017 5:32 AM
> To: dev@dpdk.org; De Lara Guarch, Pablo
> <pablo.de.lara.guarch@intel.com>
> Cc: thomas@monjalon.net; Tai, Charlie <charlie.tai@intel.com>; Gobriel,
> Sameh <sameh.gobriel@intel.com>; Mcnamara, John
> <john.mcnamara@intel.com>; Wang, Yipeng1 <yipeng1.wang@intel.com>
> Subject: [PATCH v5 2/7] member: implement HT mode
>
> One of the set-summary structures is hash-table based set-summary
> (HTSS). One example is cuckoo filter [1].
>
> Comparing to a traditional hash table, HTSS has a much more compact
> structure. For each element, only one signature and its corresponding set ID
> is stored. No key comparison is required during lookup. For the table
> structure, there are multiple entries in each bucket, and the table is
> composed of many buckets.
>
> Two modes are supported for HTSS, "cache" and "none-cache" modes.
> The non-cache mode is similar to the cuckoo filter [1].
> When a bucket is full, one entry will be evicted to its alternative bucket to
> make space for the new key. The table could be full and then no more keys
> could be inserted. This mode has false-positive rate but no false-negative.
> Multiple entries with same signature could stay in the same bucket.
>
> The "cache" mode does not evict key to its alternative bucket when a
> bucket is full, an existing key will be evicted out of the table like a cache.
> Thus, the table will never reject keys when it is full. Another property is in
> each bucket, there cannot be multiple entries with same signature. The
> mode could have both false-positive and false-negative probability.
>
> This patch adds the implementation of HTSS.
>
> [1] B Fan, D G Andersen and M Kaminsky, “Cuckoo Filter: Practically Better
> Than Bloom,” in Conference on emerging Networking Experiments and
> Technologies, 2014.
>
> Signed-off-by: Yipeng Wang <yipeng1.wang@intel.com>
...
Just a comment below. The rest looks fine to me (and thanks for the explanations
in the v4 patch, all clear), so keep my "Reviewed-by" in next version.
Reviewed-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
> +++ b/lib/librte_member/rte_member_ht.c
...
> +/* Search bucket for entry with tmp_sig and update set_id */ static
> +inline int update_entry_search(uint32_t bucket_id, member_sig_t
> +tmp_sig,
> + struct member_ht_bucket *buckets,
> + member_set_t set_id)
> +{
> + int32_t i;
"i" cannot take negative values, so use uint32_t
(same in "search_bucket_single" and "search_bucket_multi").
> +
> + for (i = 0; i < RTE_MEMBER_BUCKET_ENTRIES; i++) {
> + if (buckets[bucket_id].sigs[i] == tmp_sig) {
> + buckets[bucket_id].sets[i] = set_id;
> + return 1;
> + }
> + }
> + return 0;
> +}
> +
next prev parent reply other threads:[~2017-10-03 8:47 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-22 0:19 [dpdk-dev] [PATCH 0/7] Add Membership Library Yipeng Wang
2017-08-22 0:19 ` [dpdk-dev] [PATCH 1/7] member: implement main API Yipeng Wang
2017-08-22 3:59 ` Stephen Hemminger
2017-08-22 10:02 ` Luca Boccassi
2017-08-24 9:35 ` Ferruh Yigit
2017-08-24 9:55 ` Luca Boccassi
2017-08-24 10:32 ` Ferruh Yigit
2017-09-02 12:55 ` Luca Boccassi
2017-09-02 23:49 ` Luca Boccassi
2017-08-24 18:38 ` Wang, Yipeng1
2017-09-02 12:54 ` Luca Boccassi
2017-08-22 0:19 ` [dpdk-dev] [PATCH 2/7] member: implement HT mode Yipeng Wang
2017-08-22 0:19 ` [dpdk-dev] [PATCH 3/7] member: implement vBF mode Yipeng Wang
2017-08-22 0:19 ` [dpdk-dev] [PATCH 4/7] member: add AVX for HT mode Yipeng Wang
2017-08-22 0:19 ` [dpdk-dev] [PATCH 5/7] member: enable the library Yipeng Wang
2017-08-22 0:19 ` [dpdk-dev] [PATCH 6/7] test/member: add functional and perf tests Yipeng Wang
2017-08-22 0:19 ` [dpdk-dev] [PATCH 7/7] doc: add membership documentation Yipeng Wang
2017-08-22 4:01 ` [dpdk-dev] [PATCH 0/7] Add Membership Library Stephen Hemminger
2017-08-23 2:58 ` Wang, Yipeng1
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 " Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 1/7] member: implement main API Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 2/7] member: implement HT mode Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 3/7] member: implement vBF mode Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 4/7] member: add AVX for HT mode Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 5/7] member: enable the library Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 6/7] test/member: add functional and perf tests Yipeng Wang
2017-09-02 1:24 ` [dpdk-dev] [PATCH v2 7/7] doc: add membership documentation Yipeng Wang
2017-09-04 13:19 ` Mcnamara, John
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 0/7] Add Membership Library Yipeng Wang
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 1/7] member: implement main API Yipeng Wang
2017-09-22 10:47 ` Thomas Monjalon
2017-09-25 14:15 ` De Lara Guarch, Pablo
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 2/7] member: implement HT mode Yipeng Wang
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 3/7] member: implement vBF mode Yipeng Wang
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 4/7] member: add AVX for HT mode Yipeng Wang
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 5/7] member: enable the library Yipeng Wang
2017-09-22 10:48 ` Thomas Monjalon
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 6/7] test/member: add functional and perf tests Yipeng Wang
2017-09-05 23:59 ` [dpdk-dev] [PATCH v3 7/7] doc: add membership documentation Yipeng Wang
2017-09-18 18:42 ` Mcnamara, John
2017-09-25 12:30 ` De Lara Guarch, Pablo
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 0/7] Add Membership Library Yipeng Wang
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 1/7] member: implement main API Yipeng Wang
2017-10-02 10:04 ` De Lara Guarch, Pablo
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 2/7] member: implement HT mode Yipeng Wang
2017-10-02 13:30 ` De Lara Guarch, Pablo
2017-10-03 1:18 ` Wang, Yipeng1
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 3/7] member: implement vBF mode Yipeng Wang
2017-10-02 15:44 ` De Lara Guarch, Pablo
2017-10-03 1:24 ` Wang, Yipeng1
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 4/7] member: add AVX for HT mode Yipeng Wang
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 5/7] member: enable the library Yipeng Wang
2017-10-02 15:47 ` De Lara Guarch, Pablo
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 6/7] test/member: add functional and perf tests Yipeng Wang
2017-10-02 16:20 ` De Lara Guarch, Pablo
2017-09-27 17:40 ` [dpdk-dev] [PATCH v4 7/7] doc: add membership documentation Yipeng Wang
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 0/7] Add Membership Library Yipeng Wang
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 1/7] member: implement main API Yipeng Wang
2017-10-03 8:42 ` De Lara Guarch, Pablo
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 2/7] member: implement HT mode Yipeng Wang
2017-10-03 8:47 ` De Lara Guarch, Pablo [this message]
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 3/7] member: implement vBF mode Yipeng Wang
2017-10-03 8:50 ` De Lara Guarch, Pablo
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 4/7] member: add AVX for HT mode Yipeng Wang
2017-10-03 9:01 ` De Lara Guarch, Pablo
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 5/7] member: enable the library Yipeng Wang
2017-10-03 9:04 ` De Lara Guarch, Pablo
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 6/7] test/member: add functional and perf tests Yipeng Wang
2017-10-03 9:07 ` De Lara Guarch, Pablo
2017-10-03 4:31 ` [dpdk-dev] [PATCH v5 7/7] doc: add membership documentation Yipeng Wang
2017-10-03 9:08 ` De Lara Guarch, Pablo
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 0/7] Add Membership Library Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 1/7] member: implement main API Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 2/7] member: implement HT mode Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 3/7] member: implement vBF mode Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 4/7] member: add AVX for HT mode Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 5/7] member: enable the library Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 6/7] test/member: add functional and perf tests Yipeng Wang
2017-10-04 3:12 ` [dpdk-dev] [PATCH v6 7/7] doc: add membership documentation Yipeng Wang
2017-10-04 13:44 ` Mcnamara, John
2017-10-08 22:14 ` [dpdk-dev] [PATCH v6 0/7] Add Membership Library Thomas Monjalon
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