From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 12/13] pack-bitmap: implement BLOB_LIMIT filtering
Date: Thu, 13 Feb 2020 15:17:10 -0800 [thread overview]
Message-ID: <xmqq7e0qqdqh.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20200213022523.GL1126038@coredump.intra.peff.net> (Jeff King's message of "Wed, 12 Feb 2020 21:25:23 -0500")
Jeff King <peff@peff.net> writes:
> Just as the previous commit implemented BLOB_NONE, we can support
> BLOB_LIMIT filters by looking at the sizes of any blobs in the result
> and unsetting their bits as appropriate. This is slightly more expensive
> than BLOB_NONE, but still produces a noticeable speedup (these results
> are on git.git):
>
> Test HEAD~2 HEAD
> ------------------------------------------------------------------------------------
> 5310.7: rev-list count with blob:none 1.80(1.77+0.02) 0.22(0.20+0.02) -87.8%
> 5310.8: rev-list count with blob:limit=1k 1.99(1.96+0.03) 0.29(0.25+0.03) -85.4%
That's respectable improvement. packed_object_info() that asks only
for the inflated size is quite cheap when the object is a delta, and
hopefully we have more deltified blobs than deflated ones.
> +static unsigned long get_size_by_pos(struct bitmap_index *bitmap_git,
> + uint32_t pos)
> +{
> + struct packed_git *pack = bitmap_git->pack;
> + unsigned long size;
> + struct object_info oi = OBJECT_INFO_INIT;
> +
> + oi.sizep = &size;
> +
> + if (pos < pack->num_objects) {
> + struct revindex_entry *entry = &pack->revindex[pos];
> + if (packed_object_info(the_repository, pack,
> + entry->offset, &oi) < 0) {
> + struct object_id oid;
> + nth_packed_object_oid(&oid, pack, entry->nr);
> + die(_("unable to get size of %s"), oid_to_hex(&oid));
> + }
> + } else {
> + struct eindex *eindex = &bitmap_git->ext_index;
> + struct object *obj = eindex->objects[pos - pack->num_objects];
> + if (oid_object_info_extended(the_repository, &obj->oid, &oi, 0) < 0)
> + die(_("unable to get size of %s"), oid_to_hex(&obj->oid));
> + }
> +
> + return size;
> +}
next prev parent reply other threads:[~2020-02-13 23:17 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 2:15 [PATCH 0/13] combining object filters and bitmaps Jeff King
2020-02-13 2:16 ` [PATCH 01/13] pack-bitmap: factor out type iterator initialization Jeff King
2020-02-13 17:45 ` Junio C Hamano
2020-02-13 2:16 ` [PATCH 02/13] pack-bitmap: fix leak of haves/wants object lists Jeff King
2020-02-13 18:12 ` Junio C Hamano
2020-02-13 2:17 ` [PATCH 03/13] rev-list: fallback to non-bitmap traversal when filtering Jeff King
2020-02-13 18:19 ` Junio C Hamano
2020-02-13 18:40 ` Jeff King
2020-02-13 2:17 ` [PATCH 04/13] rev-list: consolidate bitmap-disabling options Jeff King
2020-02-13 2:18 ` [PATCH 05/13] rev-list: factor out bitmap-optimized routines Jeff King
2020-02-13 18:34 ` Junio C Hamano
2020-02-13 2:19 ` [PATCH 06/13] rev-list: make --count work with --objects Jeff King
2020-02-13 19:14 ` Junio C Hamano
2020-02-13 20:27 ` Jeff King
2020-02-13 2:20 ` [PATCH 07/13] rev-list: allow bitmaps when counting objects Jeff King
2020-02-13 21:47 ` Junio C Hamano
2020-02-13 22:27 ` Jeff King
2020-02-13 2:20 ` [PATCH 08/13] pack-bitmap: basic noop bitmap filter infrastructure Jeff King
2020-02-13 2:21 ` [PATCH 09/13] rev-list: use bitmap filters for traversal Jeff King
2020-02-13 22:22 ` Junio C Hamano
2020-02-13 22:34 ` Jeff King
2020-02-13 2:21 ` [PATCH 10/13] bitmap: add bitmap_unset() function Jeff King
2020-02-13 2:23 ` [PATCH 11/13] pack-bitmap: implement BLOB_NONE filtering Jeff King
2020-02-13 2:25 ` [PATCH 12/13] pack-bitmap: implement BLOB_LIMIT filtering Jeff King
2020-02-13 23:17 ` Junio C Hamano [this message]
2020-02-13 2:25 ` [PATCH 13/13] pack-objects: support filters with bitmaps Jeff King
2020-02-14 18:21 ` [PATCH v2 0/15] combining object filters and bitmaps Jeff King
2020-02-14 18:22 ` [PATCH v2 01/15] pack-bitmap: factor out type iterator initialization Jeff King
2020-02-15 0:10 ` Taylor Blau
2020-02-14 18:22 ` [PATCH v2 02/15] pack-bitmap: fix leak of haves/wants object lists Jeff King
2020-02-15 0:15 ` Taylor Blau
2020-02-15 6:46 ` Jeff King
2020-02-18 17:58 ` Derrick Stolee
2020-02-18 20:02 ` Jeff King
2020-02-14 18:22 ` [PATCH v2 03/15] rev-list: fallback to non-bitmap traversal when filtering Jeff King
2020-02-15 0:22 ` Taylor Blau
2020-02-14 18:22 ` [PATCH v2 04/15] pack-bitmap: refuse to do a bitmap traversal with pathspecs Jeff King
2020-02-14 19:03 ` Junio C Hamano
2020-02-14 20:51 ` Jeff King
2020-02-14 18:22 ` [PATCH v2 05/15] rev-list: factor out bitmap-optimized routines Jeff King
2020-02-15 0:35 ` Taylor Blau
2020-02-14 18:22 ` [PATCH v2 06/15] rev-list: make --count work with --objects Jeff King
2020-02-15 0:42 ` Taylor Blau
2020-02-15 6:48 ` Jeff King
2020-02-16 23:34 ` Junio C Hamano
2020-02-18 5:24 ` Jeff King
2020-02-18 17:28 ` Junio C Hamano
2020-02-18 19:55 ` Jeff King
2020-02-18 21:19 ` Junio C Hamano
2020-02-18 21:23 ` Jeff King
2020-02-18 18:05 ` Derrick Stolee
2020-02-18 19:59 ` Jeff King
2020-02-14 18:22 ` [PATCH v2 07/15] rev-list: allow bitmaps when counting objects Jeff King
2020-02-15 0:45 ` Taylor Blau
2020-02-15 6:55 ` Jeff King
2020-02-16 23:36 ` Junio C Hamano
2020-02-14 18:22 ` [PATCH v2 08/15] t5310: factor out bitmap traversal comparison Jeff King
2020-02-15 2:14 ` Taylor Blau
2020-02-15 7:00 ` Jeff King
2020-02-14 18:22 ` [PATCH v2 09/15] rev-list: allow commit-only bitmap traversals Jeff King
2020-02-18 18:18 ` Derrick Stolee
2020-02-18 20:05 ` Jeff King
2020-02-18 20:11 ` Derrick Stolee
2020-02-14 18:22 ` [PATCH v2 10/15] pack-bitmap: basic noop bitmap filter infrastructure Jeff King
2020-02-14 18:22 ` [PATCH v2 11/15] rev-list: use bitmap filters for traversal Jeff King
2020-02-14 18:22 ` [PATCH v2 12/15] bitmap: add bitmap_unset() function Jeff King
2020-02-14 18:22 ` [PATCH v2 13/15] pack-bitmap: implement BLOB_NONE filtering Jeff King
2020-02-18 19:26 ` Derrick Stolee
2020-02-18 19:36 ` Derrick Stolee
2020-02-18 20:30 ` Jeff King
2020-02-18 20:24 ` Jeff King
2020-02-14 18:22 ` [PATCH v2 14/15] pack-bitmap: implement BLOB_LIMIT filtering Jeff King
2020-02-14 18:22 ` [PATCH v2 15/15] pack-objects: support filters with bitmaps Jeff King
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