/* * blktrace output analysis: generate a timeline & gather statistics * * Copyright (C) 2006 Alan D. Brunelle * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include "blktrace.h" #include "rbtree.h" #include "list.h" /* * 0 == 1 blk * 1 == 2 blks * ... * 1022 == 1023 blks * 1023 == 1024 blks * 1024 == > 1024 blks */ #define N_HIST_BKTS 1025 #define BIT_TIME(t) ((double)SECONDS(t) + ((double)NANO_SECONDS(t) / 1.0e9)) #define BIT_START(iop) ((iop)->t.sector) #define BIT_END(iop) ((iop)->t.sector + ((iop)->t.bytes >> 9)) #define IOP_READ(iop) ((iop)->t.action & BLK_TC_ACT(BLK_TC_READ)) #define IOP_RW(iop) (IOP_READ(iop) ? 1 : 0) #define TO_SEC(nanosec) ((double)(nanosec) / 1.0e9) #define TO_MSEC(nanosec) (1000.0 * TO_SEC(nanosec)) enum iop_type { IOP_Q = 0, IOP_X = 1, IOP_A = 2, IOP_G = 3, IOP_M = 4, IOP_D = 5, IOP_C = 6, IOP_R = 7, IOP_I = 8, IOP_S = 9 }; #define N_IOP_TYPES (IOP_S + 1) struct mode { int most_seeks, nmds; long long *modes; }; struct io; struct io_list { struct list_head head; struct io *iop; int cy_users; }; struct avg_info { __u64 min, max, total; double avg; int n; }; struct avgs_info { struct avg_info q2q_dm; struct avg_info q2a_dm; struct avg_info q2c_dm; struct avg_info q2q; struct avg_info q2a; struct avg_info q2g; struct avg_info s2g; struct avg_info g2i; struct avg_info q2m; struct avg_info i2d; struct avg_info m2d; struct avg_info d2c; struct avg_info q2c; struct avg_info blks; /* Blocks transferred */ }; struct range_info { struct list_head head; /* on: qranges OR cranges */ __u64 start, end; }; struct region_info { struct list_head qranges; struct list_head cranges; }; struct p_info { struct region_info regions; struct avgs_info avgs; __u64 last_q; __u32 pid; char *name; }; struct stats { __u64 rqm[2], ios[2], sec[2], wait, svctm; double last_qu_change, last_dev_change, tot_qusz, idle_time; int cur_qusz, cur_dev; }; struct stats_t { double n; double rqm_s[2], ios_s[2], sec_s[2]; double avgrq_sz, avgqu_sz, await, svctm, p_util; }; struct d_info { struct list_head all_head, hash_head; void *heads; struct region_info regions; char *devmap; void *q2q_handle, *seek_handle, *bno_dump_handle, *up_hist_handle; void *q2d_priv, *aqd_handle; void *q2d_plat_handle, *q2c_plat_handle, *d2c_plat_handle; FILE *q2d_ofp, *d2c_ofp, *q2c_ofp, *pit_fp; struct avgs_info avgs; struct stats stats, all_stats; __u64 last_q, n_qs, n_ds; __u64 n_act_q, t_act_q; /* # currently active when Q comes in */ __u32 device; int pre_culling; int is_plugged, nplugs, nplugs_t; __u64 nios_up, nios_upt; double start_time, last_plug, plugged_time, end_time; }; struct io { struct rb_node rb_node; struct list_head f_head, a_head; struct d_info *dip; struct p_info *pip; void *pdu; __u64 bytes_left, g_time, i_time, m_time, d_time, c_time, d_sec, c_sec; __u64 s_time; __u32 d_nsec, c_nsec; struct blk_io_trace t; int linked; enum iop_type type; }; /* bt_timeline.c */ extern char bt_timeline_version[], *devices, *exes, *input_name, *output_name; extern char *seek_name, *iostat_name, *d2c_name, *q2c_name, *per_io_name; extern char *bno_dump_name, *unplug_hist_name, *sps_name, *aqd_name, *q2d_name; extern char *per_io_trees; extern double range_delta, plat_freq; extern FILE *rngs_ofp, *avgs_ofp, *xavgs_ofp, *iostat_ofp, *per_io_ofp; extern FILE *msgs_ofp; extern int verbose, done, time_bounded, output_all_data, seek_absolute; extern int easy_parse_avgs, ignore_remaps; extern unsigned int n_devs; extern unsigned long n_traces; extern struct list_head all_devs, all_procs; extern struct avgs_info all_avgs; extern __u64 last_q; extern struct region_info all_regions; extern struct list_head all_ios, free_ios; extern __u64 iostat_interval, iostat_last_stamp; extern time_t genesis, last_vtrace; extern double t_astart, t_aend; extern __u64 q_histo[N_HIST_BKTS], d_histo[N_HIST_BKTS]; /* args.c */ void handle_args(int argc, char *argv[]); void clean_args(); /* aqd.c */ void *aqd_alloc(char *str); void aqd_free(void *info); void aqd_clean(void); void aqd_issue(void *info, double ts); void aqd_complete(void *info, double ts); /* devmap.c */ int dev_map_read(char *fname); char *dev_map_find(__u32 device); void dev_map_exit(void); /* devs.c */ void init_dev_heads(void); struct d_info *dip_alloc(__u32 device, struct io *iop); void iop_rem_dip(struct io *iop); struct d_info *__dip_find(__u32 device); void dip_foreach_list(struct io *iop, enum iop_type type, struct list_head *hd); void dip_foreach(struct io *iop, enum iop_type type, void (*fnc)(struct io *iop, struct io *this), int rm_after); struct io *dip_find_sec(struct d_info *dip, enum iop_type type, __u64 sec); void dip_foreach_out(void (*func)(struct d_info *, void *), void *arg); void dip_plug(__u32 dev, double cur_time); void dip_unplug(__u32 dev, double cur_time, __u64 nio_ups); void dip_unplug_tm(__u32 dev, double cur_time, __u64 nio_ups); void dip_exit(void); void dip_cleanup(void); /* dip_rb.c */ int rb_insert(struct rb_root *root, struct io *iop); struct io *rb_find_sec(struct rb_root *root, __u64 sec); void rb_foreach(struct rb_node *n, struct io *iop, void (*fnc)(struct io *iop, struct io *this), struct list_head *head); /* iostat.c */ void iostat_init(void); void iostat_getrq(struct io *iop); void iostat_merge(struct io *iop); void iostat_issue(struct io *iop); void iostat_complete(struct io *d_iop, struct io *c_iop); void iostat_check_time(__u64 stamp); void iostat_dump_stats(__u64 stamp, int all); /* latency.c */ void latency_alloc(struct d_info *dip); void latency_clean(void); void latency_q2d(struct d_info *dip, __u64 tstamp, __u64 latency); void latency_d2c(struct d_info *dip, __u64 tstamp, __u64 latency); void latency_q2c(struct d_info *dip, __u64 tstamp, __u64 latency); /* misc.c */ void add_file(FILE *fp, char *oname); void add_buf(void *buf); char *make_dev_hdr(char *pad, size_t len, struct d_info *dip, int add_parens); FILE *my_fopen(const char *path, const char *mode); int my_open(const char *path, int flags); void dbg_ping(void); void clean_allocs(void); /* mmap.c */ void setup_ifile(char *fname); void cleanup_ifile(void); int next_trace(struct blk_io_trace *t, void **pdu); double pct_done(void); /* output.c */ int output_avgs(FILE *ofp); int output_ranges(FILE *ofp); /* proc.c */ void process_alloc(__u32 pid, char *name); struct p_info *find_process(__u32 pid, char *name); void pip_update_q(struct io *iop); void pip_foreach_out(void (*f)(struct p_info *, void *), void *arg); void pip_exit(void); /* bno_dump.c */ void *bno_dump_alloc(__u32 device); void bno_dump_free(void *param); void bno_dump_add(void *handle, struct io *iop); void bno_dump_clean(void); /* plat.c */ void *plat_alloc(char *str); void plat_free(void *info); void plat_clean(void); void plat_x2c(void *info, __u64 ts, __u64 latency); /* q2d.c */ void q2d_histo_add(void *priv, __u64 q2d); void *q2d_alloc(void); void q2d_free(void *priv); void q2d_display_header(FILE *fp); void q2d_display_dashes(FILE *fp); void q2d_display(FILE *fp, void *priv); int q2d_ok(void *priv); void q2d_acc(void *a1, void *a2); /* seek.c */ void *seeki_alloc(char *str); void seeki_free(void *param); void seek_clean(void); void seeki_add(void *handle, struct io *iop); double seeki_mean(void *handle); long long seeki_nseeks(void *handle); long long seeki_median(void *handle); int seeki_mode(void *handle, struct mode *mp); /* trace.c */ void add_trace(struct io *iop); /* trace_complete.c */ void trace_complete(struct io *c_iop); /* trace_im.c */ void run_im(struct io *im_iop, struct io *d_iop, struct io *c_iop); void run_unim(struct io *im_iop, struct io *d_iop, struct io *c_iop); int ready_im(struct io *im_iop, struct io *c_iop); void trace_insert(struct io *i_iop); void trace_merge(struct io *m_iop); void trace_getrq(struct io *g_iop); void trace_sleeprq(struct io *s_iop); /* trace_issue.c */ void run_issue(struct io *d_iop, struct io *u_iop, struct io *c_iop); void run_unissue(struct io *d_iop, struct io *u_iop, struct io *c_iop); int ready_issue(struct io *d_iop, struct io *c_iop); void trace_issue(struct io *d_iop); /* trace_plug.c */ void trace_plug(struct io *p_iop); void trace_unplug_io(struct io *u_iop); void trace_unplug_timer(struct io *u_iop); /* trace_queue.c */ void run_queue(struct io *q_iop, struct io *u_iop, struct io *c_iop); int ready_queue(struct io *q_iop, struct io *c_iop); void trace_queue(struct io *q_iop); /* trace_remap.c */ void run_remap(struct io *a_iop, struct io *u_iop, struct io *c_iop); int ready_remap(struct io *a_iop, struct io *c_iop); void trace_remap(struct io *a_iop); /* trace_requeue.c */ void trace_requeue(struct io *r_iop); /* unplug_hist.c */ void *unplug_hist_alloc(__u32 device); void unplug_hist_free(void *arg); void unplug_hist_add(struct io *u_iop); #include "inlines.h"