rcap/rcapstat/rcapstat.c

	rcapstat.c revision 0209230bf1261579beab4f55226bb509e6b850cb
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <libintl.h>
#include <locale.h>

#include "rcapd.h"
#include "utils.h"
#include "rcapd_stat.h"

static char mode[RC_MODE_LEN];
static rcapd_stat_hdr_t hdr;
static int global;
static int unformatted;
static time_t stat_mod = 0;

typedef struct col {
    rcid_t      col_id;
    char        col_name[LC_NAME_LEN];
    uint64_t    col_nproc;
    uint64_t    col_vmsize;
    uint64_t    col_rsssize;
    uint64_t    col_rsslimit;
    uint64_t    col_paged_eff;
    uint64_t    col_paged_eff_old;
    uint64_t    col_paged_eff_avg;
    uint64_t    col_paged_att;
    uint64_t    col_paged_att_old;
    uint64_t    col_paged_att_avg;
    uint64_t    col_count;
    int     col_fresh;
    struct col  *col_next;
    struct col  *col_prev;
    lcollection_stat_t  col_src_stat;
    lcollection_stat_t  col_old_stat;
} col_t;

static col_t *col_head;
static int ncol;

static col_t *
col_find(rcid_t id)
{
    col_t *col;
    for (col = col_head; col != NULL; col = col->col_next)
        if (col->col_id.rcid_type == id.rcid_type &&
            col->col_id.rcid_val == id.rcid_val)
            return (col);
    return (NULL);
}

static col_t *
col_insert(rcid_t id)
{
    col_t *new_col;

    new_col = malloc(sizeof (col_t));
    if (new_col == NULL) {
        (void) fprintf(stderr, gettext("rcapstat: malloc() failed\n"));
        exit(E_ERROR);
    }
    (void) memset(new_col, 0, sizeof (col_t));
    new_col->col_next = col_head;
    new_col->col_id = id;
    if (col_head != NULL)
        col_head->col_prev = new_col;
    col_head = new_col;
    ncol++;
    return (new_col);
}

static void
col_remove(col_t *col)
{
    if (col->col_prev != NULL)
        col->col_prev->col_next = col->col_next;
    if (col->col_next != NULL)
        col->col_next->col_prev = col->col_prev;
    if (col_head == col)
        col_head = col->col_next;
    ncol--;
    free(col);
}

static void
usage()
{
    (void) fprintf(stderr,
        gettext("usage: rcapstat [-g] [-p | -z] [interval [count]]\n"));
    exit(E_USAGE);
}

static void
format_size(char *str, uint64_t size, int length)
{
    char tag = 'K';
    if (size >= 10000) {
        size = (size + 512) / 1024;
        tag = 'M';
        if (size >= 10000) {
            size = (size + 512) / 1024;
            tag = 'G';
        }
    }
    (void) snprintf(str, length, "%4lld%c", size, tag);
}

static int
read_stats(rcid_type_t stat_type)
{
    int fd;
    int proc_fd;
    char procfile[20];
    uint64_t pid;
    col_t *col, *col_next;
    lcollection_report_t report;
    struct stat st;

    if ((fd = open(STAT_FILE_DEFAULT, O_RDONLY)) < 0) {
        warn(gettext("rcapd is not active\n"));
        return (E_ERROR);
    }

    if (fstat(fd, &st) == 0)
        stat_mod = st.st_mtime;

    if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
        (void) fprintf(stderr,
            gettext("rcapstat: can't read stat file header: %s\n"),
            strerror(errno));
        (void) close(fd);
        return (E_ERROR);
    }

    /*
     * Check if rcapd is running
     */
    pid = hdr.rs_pid;
    (void) snprintf(procfile, 20, "/proc/%lld/psinfo", pid);
    if ((proc_fd = open(procfile, O_RDONLY)) < 0) {
        warn(gettext("rcapd is not active\n"));
        (void) close(fd);
        return (E_ERROR);
    }
    (void) close(proc_fd);

    (void) strncpy(mode, hdr.rs_mode, RC_MODE_LEN);
    for (col = col_head; col != NULL; col = col->col_next) {
        col->col_fresh = 0;
        col->col_paged_eff = 0;
        col->col_paged_att = 0;
    }

    while (read(fd, &report, sizeof (report)) == sizeof (report)) {
        if (report.lcol_id.rcid_type != stat_type)
            continue;

        col = col_find(report.lcol_id);
        if (col == NULL) {
            col = col_insert(report.lcol_id);
            col->col_paged_eff_old = col->col_paged_eff =
                report.lcol_stat.lcols_pg_eff;
            col->col_paged_att_old = col->col_paged_att =
                report.lcol_stat.lcols_pg_att;
            col->col_count = 0;
        }
        (void) strncpy(col->col_name, report.lcol_name, LC_NAME_LEN);
        col->col_vmsize = report.lcol_image_size;
        col->col_rsssize = report.lcol_rss;
        col->col_rsslimit = report.lcol_rss_cap;
        col->col_fresh = 1;
        if (report.lcol_stat.lcols_pg_eff > col->col_paged_eff_old) {
            col->col_paged_eff =
                report.lcol_stat.lcols_pg_eff -
                col->col_paged_eff_old;
            if (report.lcol_stat.lcols_scan_count > col->col_count)
                col->col_paged_eff_avg =
                    col->col_paged_eff /
                    (report.lcol_stat.lcols_scan_count -
                    col->col_count);
        } else {
            col->col_paged_eff_avg = 0;
        }
        if (report.lcol_stat.lcols_pg_att > col->col_paged_att_old) {
            col->col_paged_att =
                report.lcol_stat.lcols_pg_att -
                col->col_paged_att_old;
            if (report.lcol_stat.lcols_scan_count > col->col_count)
                col->col_paged_att_avg =
                    col->col_paged_att /
                    (report.lcol_stat.lcols_scan_count -
                    col->col_count);
        } else {
            col->col_paged_att_avg = 0;
        }
        col->col_paged_eff_old = report.lcol_stat.lcols_pg_eff;
        col->col_paged_att_old = report.lcol_stat.lcols_pg_att;
        col->col_nproc =
            report.lcol_stat.lcols_proc_in -
            report.lcol_stat.lcols_proc_out;
        col->col_count = report.lcol_stat.lcols_scan_count;
        col->col_src_stat = report.lcol_stat;
    }

    /*
     * Remove stale data
     */
    col = col_head;
    while (col != NULL) {
        col_next = col->col_next;
        if (col->col_fresh == 0)
            col_remove(col);
        col = col_next;
    }
    (void) close(fd);
    return (E_SUCCESS);
}

/*
 * Print each collection's interval statistics.
 */
/*ARGSUSED*/
static void
print_unformatted_stats(void)
{
    col_t *col;

#define DELTA(field) \
    (col->col_src_stat.field - col->col_old_stat.field)

    col = col_head;
    while (col != NULL) {
        if (bcmp(&col->col_src_stat, &col->col_old_stat,
            sizeof (col->col_src_stat)) == 0) {
            col = col->col_next;
            continue;
        }
        (void) printf("%s %s status: succeeded/attempted (k): "
            "%llu/%llu, ineffective/scans/unenforced/samplings:  "
            "%llu/%llu/%llu/%llu, RSS min/max (k): %llu/%llu, cap %llu "
            "kB, processes/thpt: %llu/%llu, %llu scans over %lld ms\n",
            mode, col->col_name, DELTA(lcols_pg_eff),
            DELTA(lcols_pg_att), DELTA(lcols_scan_ineffective),
            DELTA(lcols_scan), DELTA(lcols_unenforced_cap),
            DELTA(lcols_rss_sample), col->col_src_stat.lcols_min_rss,
            col->col_src_stat.lcols_max_rss, col->col_rsslimit,
            (col->col_src_stat.lcols_proc_in -
            col->col_old_stat.lcols_proc_out), DELTA(lcols_proc_out),
            DELTA(lcols_scan_count), DELTA(lcols_scan_time_complete) /
            (NANOSEC / MILLISEC));
        col->col_old_stat = col->col_src_stat;

        col = col->col_next;
    }

    if (global)
        (void) printf(gettext("physical memory utilization: %3u%%   "
            "cap enforcement threshold: %3u%%\n"), hdr.rs_pressure_cur,
            hdr.rs_pressure_cap);
#undef DELTA
}

static void
print_stats(rcid_type_t stat_type)
{
    col_t *col;
    char size[6];
    char limit[6];
    char rss[6];
    char nproc[6];
    char paged_att[6];
    char paged_eff[6];
    char paged_att_avg[6];
    char paged_eff_avg[6];
    static int count = 0;

    /*
     * Print a header once every 20 times if we're only displaying reports
     * for one collection (10 times if -g is used).  Print a header every
     * interval otherwise.
     */
    if (count == 0 || ncol != 1)
        (void) printf("%6s %-15s %5s %5s %5s %5s %5s %5s %5s %5s\n",
            "id", (stat_type == RCIDT_PROJECT ?  "project" : "zone"),
            "nproc", "vm", "rss", "cap",
            "at", "avgat", "pg", "avgpg");
    if (++count >= 20 || (count >= 10 && global != 0) || ncol != 1)
        count = 0;

    for (col = col_head; col != NULL; col = col->col_next) {
        if (col->col_id.rcid_type != stat_type)
            continue;

        if (col->col_paged_att == 0)
            strlcpy(nproc, "-", sizeof (nproc));
        else
            (void) snprintf(nproc, sizeof (nproc), "%lld",
                col->col_nproc);
        format_size(size, col->col_vmsize, 6);
        format_size(rss, col->col_rsssize, 6);
        format_size(limit, col->col_rsslimit, 6);
        format_size(paged_att, col->col_paged_att, 6);
        format_size(paged_eff, col->col_paged_eff, 6);
        format_size(paged_att_avg, col->col_paged_att_avg, 6);
        format_size(paged_eff_avg, col->col_paged_eff_avg, 6);
        (void) printf("%6lld %-15s %5s %5s %5s %5s %5s %5s %5s %5s\n",
            col->col_id.rcid_val, col->col_name,
            nproc,
            size, rss, limit,
            paged_att, paged_att_avg,
            paged_eff, paged_eff_avg);
    }
    if (global)
        (void) printf(gettext("physical memory utilization: %3u%%   "
            "cap enforcement threshold: %3u%%\n"), hdr.rs_pressure_cur,
            hdr.rs_pressure_cap);
}

int
main(int argc, char *argv[])
{
    int interval = 5;
    int count;
    int always = 1;
    int opt;
    int projects = 0;
    int zones = 0;
    /* project reporting is the default if no option is specified */
    rcid_type_t stat_type = RCIDT_PROJECT;

    (void) setlocale(LC_ALL, "");
    (void) textdomain(TEXT_DOMAIN);
    (void) setprogname("rcapstat");

    global = unformatted = 0;
    while ((opt = getopt(argc, argv, "gpuz")) != (int)EOF) {
        switch (opt) {
        case 'g':
            global = 1;
            break;
        case 'p':
            projects = 1;
            stat_type = RCIDT_PROJECT;
            break;
        case 'u':
            unformatted = 1;
            break;
        case 'z':
            stat_type = RCIDT_ZONE;
            zones = 1;
            break;
        default:
            usage();
        }
    }

    if (argc > optind)
        if ((interval = xatoi(argv[optind++])) <= 0)
            die(gettext("invalid interval specified\n"));
    if (argc > optind) {
        if ((count = xatoi(argv[optind++])) <= 0)
            die(gettext("invalid count specified\n"));
        always = 0;
    }
    if (argc > optind || (projects > 0 && zones > 0))
        usage();

    while (always || count-- > 0) {
        if (read_stats(stat_type) != E_SUCCESS)
            return (E_ERROR);
        if (!unformatted) {
            print_stats(stat_type);
            (void) fflush(stdout);
            if (count || always)
                (void) sleep(interval);
        } else {
            struct stat st;

            print_unformatted_stats();
            (void) fflush(stdout);
            while (stat(STAT_FILE_DEFAULT, &st) == 0 &&
                st.st_mtime == stat_mod)
                usleep((useconds_t)(0.2 * MICROSEC));
        }
    }

    return (E_SUCCESS);
}