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129 lines
3.7 KiB
129 lines
3.7 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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* Copyright (C) 2006 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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static inline void __out(FILE *ofp, __u64 tm, enum iop_type type,
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__u64 sec, __u32 nsec, int indent)
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{
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if (tm != (__u64)-1) {
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if (indent)
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fprintf(ofp, " ");
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fprintf(ofp, "%5d.%09lu %c %10llu+%-4u\n",
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(int)SECONDS(tm), (unsigned long)NANO_SECONDS(tm),
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type2c(type), (unsigned long long)sec, nsec);
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}
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}
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static void display_io_track(FILE *ofp, struct io *iop)
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{
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fprintf(ofp, "%3d,%-3d: ", MAJOR(iop->t.device), MINOR(iop->t.device));
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__out(ofp, iop->t.time, IOP_Q, iop->t.sector, t_sec(&iop->t), 0);
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if (iop->g_time != (__u64)-1)
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__out(ofp, iop->g_time, IOP_G, iop->t.sector, t_sec(&iop->t),1);
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if (iop->i_time != (__u64)-1)
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__out(ofp, iop->i_time, IOP_I, iop->t.sector, t_sec(&iop->t),1);
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if (iop->m_time != (__u64)-1)
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__out(ofp, iop->m_time, IOP_M, iop->t.sector, t_sec(&iop->t),1);
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__out(ofp, iop->d_time, IOP_D, iop->d_sec, iop->d_nsec, 1);
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__out(ofp, iop->c_time, IOP_C, iop->c_sec, iop->c_nsec, 1);
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fprintf(ofp, "\n");
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}
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static void handle_complete(struct io *c_iop)
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{
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LIST_HEAD(head);
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struct list_head *p, *q;
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__u64 d_time = (__u64)-1;
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FILE *pit_fp = c_iop->dip->pit_fp;
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double cur = BIT_TIME(c_iop->t.time);
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update_blks(c_iop);
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update_cregion(&all_regions, c_iop->t.time);
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update_cregion(&c_iop->dip->regions, c_iop->t.time);
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if (c_iop->pip)
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update_cregion(&c_iop->pip->regions, c_iop->t.time);
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aqd_complete(c_iop->dip->aqd_handle, cur);
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rstat_add(c_iop->dip->rstat_handle, cur, c_iop->t.bytes >> 9);
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dip_foreach_list(c_iop, IOP_Q, &head);
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list_for_each_safe(p, q, &head) {
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struct io *q_iop = list_entry(p, struct io, f_head);
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__u64 q2c = tdelta(q_iop->t.time, c_iop->t.time);
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c_iop->bytes_left -= q_iop->t.bytes;
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update_q2c(q_iop, q2c);
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latency_q2c(q_iop->dip, q_iop->t.time, q2c);
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if (q_iop->d_time != (__u64)-1) {
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__u64 d2c = tdelta(q_iop->d_time, c_iop->t.time);
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p_live_add(q_iop->dip, q_iop->d_time, c_iop->t.time);
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update_d2c(q_iop, d2c);
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latency_d2c(q_iop->dip, c_iop->t.time, d2c);
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iostat_complete(q_iop, c_iop);
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d_time = q_iop->d_time;
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}
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if (per_io_ofp) {
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q_iop->c_time = c_iop->t.time;
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q_iop->c_sec = c_iop->t.sector;
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q_iop->c_nsec = t_sec(&c_iop->t);
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display_io_track(per_io_ofp, q_iop);
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}
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if (q_iop->dip->pit_fp) {
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fprintf(pit_fp, "%d.%09lu ",
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(int)SECONDS(q_iop->t.time),
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(unsigned long)NANO_SECONDS(q_iop->t.time));
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}
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list_del(&q_iop->f_head);
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io_release(q_iop);
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}
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if (per_io_ofp)
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fprintf(per_io_ofp,
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"-----------------------------------------\n");
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if (c_iop->dip->pit_fp) {
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fprintf(pit_fp, "| %d.%09lu | %d.%09lu\n",
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(int)SECONDS(d_time),
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(unsigned long)NANO_SECONDS(d_time),
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(int)SECONDS(c_iop->t.time),
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(unsigned long)NANO_SECONDS(c_iop->t.time));
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}
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}
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void trace_complete(struct io *c_iop)
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{
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if (c_iop->t.bytes == 0)
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return;
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if (io_setup(c_iop, IOP_C))
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handle_complete(c_iop);
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io_release(c_iop);
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}
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