From: Martin Peschke <mpeschke@xxxxxxxxxxxxxxxxxx>
Add accounting of per-request throughput in bytes per millisecond
both for read ad write I/O.
Signed-off-by: Martin Peschke <mpeschke@xxxxxxxxxxxxxxxxxx>
---
blkiomon.c | 3 +++
blkiomon.h | 10 ++++++++++
2 files changed, 13 insertions(+)
--- a/blkiomon.c
+++ b/blkiomon.c
@@ -316,6 +316,7 @@ static int blkiomon_account(struct blk_i
struct blkiomon_stat *p;
__u64 d2c = (bit_c->time - bit_d->time) / 1000; /* ns -> us */
__u32 size = bit_d->bytes;
+ __u64 thrput = size * 1000 / d2c;
dstat = blkiomon_get_dstat(bit_d->device);
if (!dstat)
@@ -323,9 +324,11 @@ static int blkiomon_account(struct blk_i
p = &dstat->msg.stat;
if (BLK_DATADIR(bit_c->action) & BLK_TC_READ) {
+ minmax_account(&p->thrput_r, thrput);
minmax_account(&p->size_r, size);
minmax_account(&p->d2c_r, d2c);
} else if (BLK_DATADIR(bit_c->action) & BLK_TC_WRITE) {
+ minmax_account(&p->thrput_w, thrput);
minmax_account(&p->size_w, size);
minmax_account(&p->d2c_w, d2c);
} else
--- a/blkiomon.h
+++ b/blkiomon.h
@@ -38,6 +38,8 @@ struct blkiomon_stat {
struct minmax size_w;
struct minmax d2c_r;
struct minmax d2c_w;
+ struct minmax thrput_r;
+ struct minmax thrput_w;
__u64 bidir;
__u32 device;
} __attribute__ ((packed));
@@ -61,6 +63,8 @@ static inline void blkiomon_stat_init(st
minmax_init(&bstat->size_w);
minmax_init(&bstat->d2c_r);
minmax_init(&bstat->d2c_w);
+ minmax_init(&bstat->thrput_r);
+ minmax_init(&bstat->thrput_w);
}
static inline void blkiomon_stat_to_be(struct blkiomon_stat *bstat)
@@ -71,6 +75,8 @@ static inline void blkiomon_stat_to_be(s
minmax_to_be(&bstat->size_w);
minmax_to_be(&bstat->d2c_r);
minmax_to_be(&bstat->d2c_w);
+ minmax_to_be(&bstat->thrput_r);
+ minmax_to_be(&bstat->thrput_w);
bstat->bidir = cpu_to_be64(bstat->bidir);
bstat->time = cpu_to_be64(bstat->time);
bstat->device = cpu_to_be32(bstat->device);
@@ -85,6 +91,8 @@ static inline void blkiomon_stat_merge(s
minmax_merge(&dst->size_w, &src->size_w);
minmax_merge(&dst->d2c_r, &src->d2c_r);
minmax_merge(&dst->d2c_w, &src->d2c_w);
+ minmax_merge(&dst->thrput_r, &src->thrput_r);
+ minmax_merge(&dst->thrput_w, &src->thrput_w);
dst->bidir += src->bidir;
}
@@ -99,6 +107,8 @@ static inline void blkiomon_stat_print(F
minmax_print(fp, "sizes write (bytes)", &p->size_w);
minmax_print(fp, "d2c read (usec)", &p->d2c_r);
minmax_print(fp, "d2c write (usec)", &p->d2c_w);
+ minmax_print(fp, "throughput read (bytes/msec)", &p->thrput_r);
+ minmax_print(fp, "throughput write (bytes/msec)", &p->thrput_w);
histlog2_print(fp, "sizes histogram (bytes)", p->size_hist, &size_hist);
histlog2_print(fp, "d2c histogram (usec)", p->d2c_hist, &d2c_hist);
fprintf(fp, "bidirectional requests: %ld\n", (unsigned long)p->bidir);
--
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