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96 lines
2.3 KiB
96 lines
2.3 KiB
4 months ago
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/*
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* blktrace output analysis: generate a timeline & gather statistics
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*
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* (C) Copyright 2008 Hewlett-Packard Development Company, L.P.
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* Alan D. Brunelle <alan.brunelle@hp.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "globals.h"
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struct plat_info {
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long nl;
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FILE *fp;
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double first_ts, last_ts, tl;
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};
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void *plat_alloc(struct d_info *dip, char *post)
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{
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char *oname;
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struct plat_info *pp;
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if (plat_freq <= 0.0) return NULL;
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pp = malloc(sizeof(*pp));
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pp->nl = 0;
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pp->first_ts = pp->last_ts = pp->tl = -1.0;
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oname = malloc(strlen(dip->dip_name) + strlen(post) + 32);
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sprintf(oname, "%s%s_plat.dat", dip->dip_name, post);
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if ((pp->fp = my_fopen(oname, "w")) == NULL) {
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perror(oname);
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free(oname);
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free(pp);
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return NULL;
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}
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add_file(pp->fp, oname);
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return pp;
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}
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void plat_free(void *info)
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{
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struct plat_info *pp = info;
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if (pp == NULL) return;
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if (pp->first_ts != -1.0) {
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double delta = pp->last_ts - pp->first_ts;
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fprintf(pp->fp, "%lf %lf\n",
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pp->first_ts + (delta / 2), pp->tl / pp->nl);
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}
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free(info);
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}
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void plat_x2c(void *info, __u64 ts, __u64 latency)
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{
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double now = TO_SEC(ts);
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double lat = TO_SEC(latency);
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struct plat_info *pp = info;
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if (pp == NULL) return;
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if (pp->first_ts == -1.0) {
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pp->first_ts = pp->last_ts = now;
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pp->nl = 1;
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pp->tl = lat;
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} else if ((now - pp->first_ts) >= plat_freq) {
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double delta = pp->last_ts - pp->first_ts;
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fprintf(pp->fp, "%lf %lf\n",
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pp->first_ts + (delta / 2), pp->tl / pp->nl);
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pp->first_ts = pp->last_ts = now;
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pp->nl = 1;
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pp->tl = lat;
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} else {
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pp->last_ts = now;
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pp->nl += 1;
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pp->tl += lat;
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}
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}
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