f772afc525
This feature is intended mostly for checking that BIRD's allocation strategies don't consume much memory space. There are some cases where withdrawing routes in a specific order lead to memory fragmentation and this output should give the user at least a notion of how much memory is actually used for data storage and how much memory is "just allocated" or used for overhead. Also raising the "system allocator overhead estimation" from 8 to 16 bytes; it is probably even more. I've found 16 as a local minimum in best scenarios among reachable machines. I couldn't find any reasonable method to estimate this value when BIRD starts up. This commit also fixes the inaccurate computation of memory overhead for slabs where the "system allocater overhead estimation" was improperly added to the size of mmap-ed memory.
143 lines
3.3 KiB
C
143 lines
3.3 KiB
C
/*
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* BIRD Internet Routing Daemon -- CLI Commands Which Don't Fit Anywhere Else
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*
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* (c) 2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include "nest/bird.h"
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#include "nest/protocol.h"
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#include "nest/route.h"
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#include "nest/cli.h"
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#include "conf/conf.h"
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#include "nest/cmds.h"
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#include "lib/string.h"
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#include "lib/resource.h"
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#include "filter/filter.h"
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extern int shutting_down;
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extern int configuring;
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void
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cmd_show_status(void)
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{
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byte tim[TM_DATETIME_BUFFER_SIZE];
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cli_msg(-1000, "BIRD " BIRD_VERSION);
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tm_format_time(tim, &config->tf_base, current_time());
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cli_msg(-1011, "Router ID is %R", config->router_id);
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cli_msg(-1011, "Hostname is %s", config->hostname);
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cli_msg(-1011, "Current server time is %s", tim);
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tm_format_time(tim, &config->tf_base, boot_time);
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cli_msg(-1011, "Last reboot on %s", tim);
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tm_format_time(tim, &config->tf_base, config->load_time);
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cli_msg(-1011, "Last reconfiguration on %s", tim);
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graceful_restart_show_status();
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if (shutting_down)
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cli_msg(13, "Shutdown in progress");
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else if (configuring)
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cli_msg(13, "Reconfiguration in progress");
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else
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cli_msg(13, "Daemon is up and running");
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}
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void
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cmd_show_symbols(struct sym_show_data *sd)
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{
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if (sd->sym)
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cli_msg(1010, "%-8s\t%s", sd->sym->name, cf_symbol_class_name(sd->sym));
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else
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{
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HASH_WALK(config->sym_hash, next, sym)
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{
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if (!sym->scope->active)
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continue;
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if (sd->type && (sym->class != sd->type))
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continue;
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cli_msg(-1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
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}
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HASH_WALK_END;
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cli_msg(0, "");
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}
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}
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#define SIZE_SUFFIX " kMGT"
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#define SIZE_FORMAT "% 4u.%1u % 1cB"
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#define SIZE_ARGS(a) (a).val, (a).decimal, SIZE_SUFFIX[(a).magnitude]
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struct size_args {
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u64 val:48;
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u64 decimal:8;
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u64 magnitude:8;
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};
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static struct size_args
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get_size_args(u64 val)
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{
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#define VALDEC 10 /* One decimal place */
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val *= VALDEC;
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uint i = 0;
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while ((val >= 10000 * VALDEC) && (i < 4))
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{
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val = (val + 512) / 1024;
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i++;
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}
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return (struct size_args) {
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.val = (val / VALDEC),
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.decimal = (val % VALDEC),
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.magnitude = i,
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};
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}
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static void
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print_size(char *dsc, struct resmem vals)
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{
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struct size_args effective = get_size_args(vals.effective);
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struct size_args overhead = get_size_args(vals.overhead);
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cli_msg(-1018, "%-17s " SIZE_FORMAT " " SIZE_FORMAT, dsc, SIZE_ARGS(effective), SIZE_ARGS(overhead));
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}
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extern pool *rt_table_pool;
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extern pool *rta_pool;
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void
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cmd_show_memory(void)
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{
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cli_msg(-1018, "BIRD memory usage");
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cli_msg(-1018, "%-17s Effective Overhead", "");
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print_size("Routing tables:", rmemsize(rt_table_pool));
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print_size("Route attributes:", rmemsize(rta_pool));
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print_size("Protocols:", rmemsize(proto_pool));
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struct resmem total = rmemsize(&root_pool);
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#ifdef HAVE_MMAP
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print_size("Standby memory:", (struct resmem) { .overhead = get_page_size() * pages_kept });
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total.overhead += get_page_size() * pages_kept;
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#endif
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print_size("Total:", total);
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cli_msg(0, "");
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}
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void
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cmd_eval(const struct f_line *expr)
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{
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buffer buf;
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LOG_BUFFER_INIT(buf);
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if (f_eval_buf(expr, this_cli->parser_pool, &buf) > F_RETURN)
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{
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cli_msg(8008, "runtime error");
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return;
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}
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cli_msg(23, "%s", buf.start);
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}
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