From: Stephen Hemminger <stephen@networkplumber.org>
To: Yipeng Wang <yipeng1.wang@intel.com>
Cc: vincent.jardin@6wind.com, bruce.richardson@intel.com,
konstantin.ananyev@intel.com, thomas@monjalon.net, dev@dpdk.org,
charlie.tai@intel.com, sameh.gobriel@intel.com,
ren.wang@intel.com
Subject: Re: [dpdk-dev] [PATCH 0/7] Add Membership Library
Date: Mon, 21 Aug 2017 21:01:32 -0700 [thread overview]
Message-ID: <20170821210132.5dd74b10@xeon-e3> (raw)
In-Reply-To: <1503361193-36699-1-git-send-email-yipeng1.wang@intel.com>
On Mon, 21 Aug 2017 17:19:46 -0700
Yipeng Wang <yipeng1.wang@intel.com> wrote:
> This patch set implements two types of set-summaries, i.e., hash-table based
> set-summary (HTSS) and Vector Bloom Filter (vBF). HTSS supports both the
> non-cache and cache modes. The non-cache mode can incur a small chance of
> false-positives which is the case when the set-summary indicates a key belongs
> to a given set while actually it is not. The cache mode can also have
> false-negatives in addition to false-positives. False-negatives means the case
> when the set-summary indicates a key does not belong to a given set while
> actually it does. This happens because cache mode allows new key to evict
> existing keys. vBF only has false-positives similar to the non-cache HTSS.
> However, one can set the false-positive rate arbitrarily. HTSS's
> false-positive rate is determined by the hash-table size and the signature size.
I don't think it makes sense to merge two different types of tables in one
API. Especially in DPDK where every cycle counts. You are taking an extra branch
on each lookup. The user of this API is likely to know exactly what type
of objects and look are desired.
next prev parent reply other threads:[~2017-08-22 4:01 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-22 0:19 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 ` Stephen Hemminger [this message]
2017-08-23 2:58 ` [dpdk-dev] [PATCH 0/7] Add Membership Library 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
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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