diff options
Diffstat (limited to 'fs/ceph/debugfs.c')
| -rw-r--r-- | fs/ceph/debugfs.c | 100 |
1 files changed, 96 insertions, 4 deletions
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index dcaed75de9e6..070ed8481340 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -7,6 +7,8 @@ #include <linux/ctype.h> #include <linux/debugfs.h> #include <linux/seq_file.h> +#include <linux/math64.h> +#include <linux/ktime.h> #include <linux/ceph/libceph.h> #include <linux/ceph/mon_client.h> @@ -18,6 +20,7 @@ #ifdef CONFIG_DEBUG_FS #include "mds_client.h" +#include "metric.h" static int mdsmap_show(struct seq_file *s, void *p) { @@ -124,6 +127,87 @@ static int mdsc_show(struct seq_file *s, void *p) return 0; } +#define CEPH_METRIC_SHOW(name, total, avg, min, max, sq) { \ + s64 _total, _avg, _min, _max, _sq, _st; \ + _avg = ktime_to_us(avg); \ + _min = ktime_to_us(min == KTIME_MAX ? 0 : min); \ + _max = ktime_to_us(max); \ + _total = total - 1; \ + _sq = _total > 0 ? DIV64_U64_ROUND_CLOSEST(sq, _total) : 0; \ + _st = int_sqrt64(_sq); \ + _st = ktime_to_us(_st); \ + seq_printf(s, "%-14s%-12lld%-16lld%-16lld%-16lld%lld\n", \ + name, total, _avg, _min, _max, _st); \ +} + +static int metric_show(struct seq_file *s, void *p) +{ + struct ceph_fs_client *fsc = s->private; + struct ceph_mds_client *mdsc = fsc->mdsc; + struct ceph_client_metric *m = &mdsc->metric; + int i, nr_caps = 0; + s64 total, sum, avg, min, max, sq; + + seq_printf(s, "item total avg_lat(us) min_lat(us) max_lat(us) stdev(us)\n"); + seq_printf(s, "-----------------------------------------------------------------------------------\n"); + + spin_lock(&m->read_latency_lock); + total = m->total_reads; + sum = m->read_latency_sum; + avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0; + min = m->read_latency_min; + max = m->read_latency_max; + sq = m->read_latency_sq_sum; + spin_unlock(&m->read_latency_lock); + CEPH_METRIC_SHOW("read", total, avg, min, max, sq); + + spin_lock(&m->write_latency_lock); + total = m->total_writes; + sum = m->write_latency_sum; + avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0; + min = m->write_latency_min; + max = m->write_latency_max; + sq = m->write_latency_sq_sum; + spin_unlock(&m->write_latency_lock); + CEPH_METRIC_SHOW("write", total, avg, min, max, sq); + + spin_lock(&m->metadata_latency_lock); + total = m->total_metadatas; + sum = m->metadata_latency_sum; + avg = total > 0 ? DIV64_U64_ROUND_CLOSEST(sum, total) : 0; + min = m->metadata_latency_min; + max = m->metadata_latency_max; + sq = m->metadata_latency_sq_sum; + spin_unlock(&m->metadata_latency_lock); + CEPH_METRIC_SHOW("metadata", total, avg, min, max, sq); + + seq_printf(s, "\n"); + seq_printf(s, "item total miss hit\n"); + seq_printf(s, "-------------------------------------------------\n"); + + seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease", + atomic64_read(&m->total_dentries), + percpu_counter_sum(&m->d_lease_mis), + percpu_counter_sum(&m->d_lease_hit)); + + mutex_lock(&mdsc->mutex); + for (i = 0; i < mdsc->max_sessions; i++) { + struct ceph_mds_session *s; + + s = __ceph_lookup_mds_session(mdsc, i); + if (!s) + continue; + nr_caps += s->s_nr_caps; + ceph_put_mds_session(s); + } + mutex_unlock(&mdsc->mutex); + seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps, + percpu_counter_sum(&m->i_caps_mis), + percpu_counter_sum(&m->i_caps_hit)); + + return 0; +} + static int caps_show_cb(struct inode *inode, struct ceph_cap *cap, void *p) { struct seq_file *s = p; @@ -222,6 +306,7 @@ DEFINE_SHOW_ATTRIBUTE(mdsmap); DEFINE_SHOW_ATTRIBUTE(mdsc); DEFINE_SHOW_ATTRIBUTE(caps); DEFINE_SHOW_ATTRIBUTE(mds_sessions); +DEFINE_SHOW_ATTRIBUTE(metric); /* @@ -255,6 +340,7 @@ void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc) debugfs_remove(fsc->debugfs_mdsmap); debugfs_remove(fsc->debugfs_mds_sessions); debugfs_remove(fsc->debugfs_caps); + debugfs_remove(fsc->debugfs_metric); debugfs_remove(fsc->debugfs_mdsc); } @@ -295,11 +381,17 @@ void ceph_fs_debugfs_init(struct ceph_fs_client *fsc) fsc, &mdsc_fops); + fsc->debugfs_metric = debugfs_create_file("metrics", + 0400, + fsc->client->debugfs_dir, + fsc, + &metric_fops); + fsc->debugfs_caps = debugfs_create_file("caps", - 0400, - fsc->client->debugfs_dir, - fsc, - &caps_fops); + 0400, + fsc->client->debugfs_dir, + fsc, + &caps_fops); } |