static void display_brw_stats(struct seq_file *seq, char *name, char *units,
struct obd_histogram *read,
struct obd_histogram *write, int scale)
{
unsigned long read_tot, write_tot, r, w, read_cum = 0, write_cum = 0;
int i;
seq_printf(seq, "\n%26s read | write\n", " ");
seq_printf(seq, "%-22s %-5s %% cum %% | %-11s %% cum %%\n",
name, units, units);
read_tot = lprocfs_oh_sum(read);
write_tot = lprocfs_oh_sum(write);
for (i = 0; i < OBD_HIST_MAX; i++) {
r = read->oh_buckets[i];
w = write->oh_buckets[i];
read_cum += r;
write_cum += w;
if (read_cum == 0 && write_cum == 0)
continue;
if (!scale)
seq_printf(seq, "%u", i);
else if (i < 10)
seq_printf(seq, "%u", scale << i);
else if (i < 20)
seq_printf(seq, "%uK", scale << (i-10));
else
seq_printf(seq, "%uM", scale << (i-20));
seq_printf(seq, ":\t\t%10lu %3lu %3lu | %4lu %3lu %3lu\n",
r, pct(r, read_tot), pct(read_cum, read_tot),
w, pct(w, write_tot), pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
}
static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
{
struct timeval now;
struct obd_device *dev = seq->private;
struct client_obd *cli = &dev->u.cli;
unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
int i;
cfs_gettimeofday(&now);
client_obd_list_lock(&cli->cl_loi_list_lock);
seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
now.tv_sec, now.tv_usec);
seq_printf(seq, "read RPCs in flight: %d\n",
cli->cl_r_in_flight);
seq_printf(seq, "write RPCs in flight: %d\n",
cli->cl_w_in_flight);
seq_printf(seq, "pending write pages: %d\n",
cli->cl_pending_w_pages);
seq_printf(seq, "pending read pages: %d\n",
cli->cl_pending_r_pages);
seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
seq_printf(seq, "pages per rpc rpcs %% cum %% |");
seq_printf(seq, " rpcs %% cum %%\n");
read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
read_cum = 0;
write_cum = 0;
for (i = 0; i < OBD_HIST_MAX; i++) {
unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
read_cum += r;
write_cum += w;
seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
1 << i, r, pct(r, read_tot),
pct(read_cum, read_tot), w,
pct(w, write_tot),
pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
seq_printf(seq, "rpcs in flight rpcs %% cum %% |");
seq_printf(seq, " rpcs %% cum %%\n");
read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
read_cum = 0;
write_cum = 0;
for (i = 0; i < OBD_HIST_MAX; i++) {
unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
read_cum += r;
write_cum += w;
seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
i, r, pct(r, read_tot),
pct(read_cum, read_tot), w,
pct(w, write_tot),
pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
seq_printf(seq, "offset rpcs %% cum %% |");
seq_printf(seq, " rpcs %% cum %%\n");
read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
read_cum = 0;
write_cum = 0;
for (i = 0; i < OBD_HIST_MAX; i++) {
unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
read_cum += r;
write_cum += w;
seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n",
(i == 0) ? 0 : 1 << (i - 1),
r, pct(r, read_tot), pct(read_cum, read_tot),
w, pct(w, write_tot), pct(write_cum, write_tot));
if (read_cum == read_tot && write_cum == write_tot)
break;
}
client_obd_list_unlock(&cli->cl_loi_list_lock);
return 0;
}
