From patchwork Thu Nov 7 14:10:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: karthik nayak X-Patchwork-Id: 13866559 Received: from mail-lj1-f174.google.com (mail-lj1-f174.google.com [209.85.208.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 95604212F15 for ; Thu, 7 Nov 2024 14:10:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730988652; cv=none; b=eidy8SYkG4AdjftwXwfL66yFJLAyEqHjdWxucA0mJ+OR1z8ag2zkp70mgC6qIEfkOeo/tMIdov+GESt6oFxzFq3YAY+3F/7rXGCYAM02e/BXKhVeGJPMKU6aOcGwtGIZ2MP6uTOT7ad6z0fyGJs+0uhdCcIhrkn3nUEif6jDx6c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730988652; c=relaxed/simple; bh=vGv2ilPHSDHE6e1ldA45sVyJA/+pgSQtmCAsIT1rWAE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hAk5ZyJ4WwayJ13rDlubHyVWAuOLuAYf/ZZgqDlG5Mxp6B1usG7xQazIh7nMoOEYqaRToUT/dnzT6Xkl37oUsi9fHo1gMlkPv9eN95jwLLvm9XCwk5ATrS+ra1NxhIE9tzzvxNB6IOax6WezvErFgDoIaOKwmw2miKsHAAf8ijE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=nXYZjykb; arc=none smtp.client-ip=209.85.208.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nXYZjykb" Received: by mail-lj1-f174.google.com with SMTP id 38308e7fff4ca-2f75c56f16aso9396361fa.0 for ; Thu, 07 Nov 2024 06:10:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1730988649; x=1731593449; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=PpKk8DmpSUok5X1tW/FIY+rJzFVAHmUUnsCsngAq5QY=; b=nXYZjykbAXdm2BFbC1uBQUazaiKZ1i/JowzpZ3ajv2SN7YqjEwVWvexELYsPZGR6hv oh4+FS1FeFS0+SHzpv3F95I8dR73gby4qGuPs6D7njNW7ZO+HAjnZt+FZyRKv+pTPUer 3l+5pbkVJqwf07b8NlUSpt8SuTMG0/tvC3WoTxexvw9WzWx/nXtl6YX2yfy+kUplTIXG GBjTHkv0BfSLAH4AuntBv7F9uVHEcNLU0yq5Y1WZeVR8sQfLZc9S1vmrhsmWgD23sHSx DxS2ok1FZAyPFq+wQJ4L3AFYBojx+855H5gze0xSeUQbmO+mRZTJdcu9pLgOLbC3OO1k KDlA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730988649; x=1731593449; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PpKk8DmpSUok5X1tW/FIY+rJzFVAHmUUnsCsngAq5QY=; b=Yqx/CPyz0spxvN5utur1PoVhIGWbURnmqXh9CYWXYIKpHKC/xiYazq2+FBWaCnFI/c AtHO5wlE7vqPExEeYeZMPJPzMu5iLs0C96xiSxDnSVehtURfoNRPX8IOQ1HWqNY91lY0 9eKLuxWTrCQfOZTaDKfK2flgvKfGFMzR6ZjMPpqWnFcGWTT0GhQEaU1/JWkapauyvZBU K+5oGVBnVpAL5mQFvfe0u2iE8UWib2lTJC1//fLwwWgTm6dA//vA/TeJ2zxxBwby8hdT yIr8Q6ykDWhQm7YUaerG0fYTWPZ9Tq9Sf/0qZ81YF+DQrUXjP3qm1phg6KhHMwqA7j96 1o4A== X-Gm-Message-State: AOJu0YweRA5NeiUMStpTqO6si53lNP8cIXM1ldp+QmgejxldpE8ZlcgA uhbf4LFPAIOGjC31XPf2iaCfaaC/ugwbBEvZMnIxfgcbssmWyS8d X-Google-Smtp-Source: AGHT+IFqJO8Se2U0sxBomtAJF255oTZmiDCo3y5smVG5w/XDnykfYPSs8I8jZbPJnqAvAFXH4TP0cA== X-Received: by 2002:a05:651c:2212:b0:2fe:f8e1:5127 with SMTP id 38308e7fff4ca-2ff1e8b4cb3mr1085911fa.9.1730988648502; Thu, 07 Nov 2024 06:10:48 -0800 (PST) Received: from archlinux.fritz.box ([2a02:2455:825d:6a00:6bb4:436f:5699:ff21]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5cf03c4ec90sm815424a12.58.2024.11.07.06.10.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Nov 2024 06:10:48 -0800 (PST) From: Karthik Nayak To: karthik.188@gmail.com Cc: git@vger.kernel.org, me@ttaylorr.com, peff@peff.net Subject: [PATCH v6 7/9] config: make `delta_base_cache_limit` a non-global variable Date: Thu, 7 Nov 2024 15:10:34 +0100 Message-ID: <89313cfed48e1133d271b8933357237bef84f569.1730976185.git.karthik.188@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The `delta_base_cache_limit` variable is a global config variable used by multiple subsystems. Let's make this non-global, by adding this variable to the stack of each of the subsystems where it is used. In `gc.c` we add it to the `gc_config` struct and also the constructor function. In `index-pack.c` we add it to the `pack_idx_option` struct and its constructor. Finally, in `packfile.c` we dynamically retrieve this value from the repository config, since the value is only used once in the entire subsystem. These changes are made to remove the usage of `delta_base_cache_limit` as a global variable in `packfile.c`. This brings us one step closer to removing the `USE_THE_REPOSITORY_VARIABLE` definition in `packfile.c` which we complete in the next patch. Signed-off-by: Karthik Nayak --- builtin/gc.c | 8 +++++++- builtin/index-pack.c | 10 +++++++--- config.c | 5 ----- environment.c | 1 - environment.h | 1 - pack-objects.h | 3 ++- pack-write.c | 1 + pack.h | 1 + packfile.c | 13 +++++++++++-- 9 files changed, 29 insertions(+), 14 deletions(-) diff --git a/builtin/gc.c b/builtin/gc.c index d52735354c..ad80c3aed2 100644 --- a/builtin/gc.c +++ b/builtin/gc.c @@ -138,6 +138,7 @@ struct gc_config { char *repack_filter_to; unsigned long big_pack_threshold; unsigned long max_delta_cache_size; + size_t delta_base_cache_limit; }; #define GC_CONFIG_INIT { \ @@ -153,6 +154,7 @@ struct gc_config { .prune_expire = xstrdup("2.weeks.ago"), \ .prune_worktrees_expire = xstrdup("3.months.ago"), \ .max_delta_cache_size = DEFAULT_DELTA_CACHE_SIZE, \ + .delta_base_cache_limit = DEFAULT_DELTA_BASE_CACHE_LIMIT, \ } static void gc_config_release(struct gc_config *cfg) @@ -168,6 +170,7 @@ static void gc_config(struct gc_config *cfg) { const char *value; char *owned = NULL; + unsigned long longval; if (!git_config_get_value("gc.packrefs", &value)) { if (value && !strcmp(value, "notbare")) @@ -206,6 +209,9 @@ static void gc_config(struct gc_config *cfg) git_config_get_ulong("gc.bigpackthreshold", &cfg->big_pack_threshold); git_config_get_ulong("pack.deltacachesize", &cfg->max_delta_cache_size); + if(!git_config_get_ulong("core.deltabasecachelimit", &longval)) + cfg->delta_base_cache_limit = longval; + if (!git_config_get_string("gc.repackfilter", &owned)) { free(cfg->repack_filter); cfg->repack_filter = owned; @@ -416,7 +422,7 @@ static uint64_t estimate_repack_memory(struct gc_config *cfg, * read_sha1_file() (either at delta calculation phase, or * writing phase) also fills up the delta base cache */ - heap += delta_base_cache_limit; + heap += cfg->delta_base_cache_limit; /* and of course pack-objects has its own delta cache */ heap += cfg->max_delta_cache_size; diff --git a/builtin/index-pack.c b/builtin/index-pack.c index eaefb41761..23bfa45403 100644 --- a/builtin/index-pack.c +++ b/builtin/index-pack.c @@ -1238,7 +1238,7 @@ static void parse_pack_objects(unsigned char *hash) * recursively checking if the resulting object is used as a base * for some more deltas. */ -static void resolve_deltas(void) +static void resolve_deltas(struct pack_idx_option *opts) { int i; @@ -1254,7 +1254,7 @@ static void resolve_deltas(void) nr_ref_deltas + nr_ofs_deltas); nr_dispatched = 0; - base_cache_limit = delta_base_cache_limit * nr_threads; + base_cache_limit = opts->delta_base_cache_limit * nr_threads; if (nr_threads > 1 || getenv("GIT_FORCE_THREADS")) { init_thread(); work_lock(); @@ -1604,6 +1604,10 @@ static int git_index_pack_config(const char *k, const char *v, else opts->flags &= ~WRITE_REV; } + if (!strcmp(k, "core.deltabasecachelimit")) { + opts->delta_base_cache_limit = git_config_ulong(k, v, ctx->kvi); + return 0; + } return git_default_config(k, v, ctx, cb); } @@ -1930,7 +1934,7 @@ int cmd_index_pack(int argc, parse_pack_objects(pack_hash); if (report_end_of_input) write_in_full(2, "\0", 1); - resolve_deltas(); + resolve_deltas(&opts); conclude_pack(fix_thin_pack, curr_pack, pack_hash); free(ofs_deltas); free(ref_deltas); diff --git a/config.c b/config.c index a11bb85da3..728ef98e42 100644 --- a/config.c +++ b/config.c @@ -1515,11 +1515,6 @@ static int git_default_core_config(const char *var, const char *value, return 0; } - if (!strcmp(var, "core.deltabasecachelimit")) { - delta_base_cache_limit = git_config_ulong(var, value, ctx->kvi); - return 0; - } - if (!strcmp(var, "core.autocrlf")) { if (value && !strcasecmp(value, "input")) { auto_crlf = AUTO_CRLF_INPUT; diff --git a/environment.c b/environment.c index a2ce998081..8e5022c282 100644 --- a/environment.c +++ b/environment.c @@ -51,7 +51,6 @@ enum fsync_method fsync_method = FSYNC_METHOD_DEFAULT; enum fsync_component fsync_components = FSYNC_COMPONENTS_DEFAULT; size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE; size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT; -size_t delta_base_cache_limit = 96 * 1024 * 1024; unsigned long big_file_threshold = 512 * 1024 * 1024; char *editor_program; char *askpass_program; diff --git a/environment.h b/environment.h index 923e12661e..2f43340f0b 100644 --- a/environment.h +++ b/environment.h @@ -165,7 +165,6 @@ extern int zlib_compression_level; extern int pack_compression_level; extern size_t packed_git_window_size; extern size_t packed_git_limit; -extern size_t delta_base_cache_limit; extern unsigned long big_file_threshold; extern unsigned long pack_size_limit_cfg; extern int max_allowed_tree_depth; diff --git a/pack-objects.h b/pack-objects.h index b9898a4e64..3f6f504203 100644 --- a/pack-objects.h +++ b/pack-objects.h @@ -7,7 +7,8 @@ struct repository; -#define DEFAULT_DELTA_CACHE_SIZE (256 * 1024 * 1024) +#define DEFAULT_DELTA_CACHE_SIZE (256 * 1024 * 1024) +#define DEFAULT_DELTA_BASE_CACHE_LIMIT (96 * 1024 * 1024) #define OE_DFS_STATE_BITS 2 #define OE_DEPTH_BITS 12 diff --git a/pack-write.c b/pack-write.c index 8c7dfddc5a..98a8c0e785 100644 --- a/pack-write.c +++ b/pack-write.c @@ -21,6 +21,7 @@ void reset_pack_idx_option(struct pack_idx_option *opts) memset(opts, 0, sizeof(*opts)); opts->version = 2; opts->off32_limit = 0x7fffffff; + opts->delta_base_cache_limit = DEFAULT_DELTA_BASE_CACHE_LIMIT; } static int sha1_compare(const void *_a, const void *_b) diff --git a/pack.h b/pack.h index 02bbdfb19c..1a33751565 100644 --- a/pack.h +++ b/pack.h @@ -58,6 +58,7 @@ struct pack_idx_option { */ int anomaly_alloc, anomaly_nr; uint32_t *anomaly; + unsigned long delta_base_cache_limit; }; void reset_pack_idx_option(struct pack_idx_option *); diff --git a/packfile.c b/packfile.c index 5e8019b1fe..2ae35dd03f 100644 --- a/packfile.c +++ b/packfile.c @@ -24,6 +24,8 @@ #include "commit-graph.h" #include "pack-revindex.h" #include "promisor-remote.h" +#include "config.h" +#include "pack-objects.h" char *odb_pack_name(struct repository *r, struct strbuf *buf, const unsigned char *hash, const char *ext) @@ -1496,7 +1498,9 @@ void clear_delta_base_cache(void) } static void add_delta_base_cache(struct packed_git *p, off_t base_offset, - void *base, unsigned long base_size, enum object_type type) + void *base, unsigned long base_size, + unsigned long delta_base_cache_limit, + enum object_type type) { struct delta_base_cache_entry *ent; struct list_head *lru, *tmp; @@ -1697,6 +1701,9 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset, struct unpack_entry_stack_ent *delta_stack = small_delta_stack; int delta_stack_nr = 0, delta_stack_alloc = UNPACK_ENTRY_STACK_PREALLOC; int base_from_cache = 0; + unsigned long delta_base_cache_limit = DEFAULT_DELTA_BASE_CACHE_LIMIT; + + repo_config_get_ulong(r, "core.deltabasecachelimit", &delta_base_cache_limit); write_pack_access_log(p, obj_offset); @@ -1878,7 +1885,9 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset, * before we are done using it. */ if (!external_base) - add_delta_base_cache(p, base_obj_offset, base, base_size, type); + add_delta_base_cache(p, base_obj_offset, base, + base_size, delta_base_cache_limit, + type); free(delta_data); free(external_base);