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Keep a counter for number of requests completed with an error.

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Sponsored by: Netflix
This commit is contained in:
Warner Losh 2018-02-06 23:21:08 +00:00
parent 6e876d695e
commit c4b72d8b37
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=328960
1 changed files with 13 additions and 1 deletions
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14
sys/cam/cam_iosched.c
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@ -223,6 +223,7 @@ struct iop_stats {
int total; /* Total for all time -- wraps */
int in; /* number queued all time -- wraps */
int out; /* number completed all time -- wraps */
int errs; /* Number of I/Os completed with error -- wraps */
/*
* Statistics on different bits of the process.
@ -781,6 +782,7 @@ cam_iosched_iop_stats_init(struct cam_iosched_softc *isc, struct iop_stats *ios)
ios->max = ios->current = 300000;
ios->min = 1;
ios->out = 0;
ios->errs = 0;
ios->pending = 0;
ios->queued = 0;
ios->total = 0;
@ -971,7 +973,11 @@ cam_iosched_iop_stats_sysctl_init(struct cam_iosched_softc *isc, struct iop_stat
SYSCTL_ADD_INT(ctx, n,
OID_AUTO, "out", CTLFLAG_RD,
&ios->out, 0,
"# of transactions completed");
"# of transactions completed (including with error)");
SYSCTL_ADD_INT(ctx, n,
OID_AUTO, "errs", CTLFLAG_RD,
&ios->errs, 0,
"# of transactions completed with an error");
SYSCTL_ADD_PROC(ctx, n,
OID_AUTO, "limiter", CTLTYPE_STRING | CTLFLAG_RW,
@ -1463,13 +1469,19 @@ cam_iosched_bio_complete(struct cam_iosched_softc *isc, struct bio *bp,
printf("done: %p %#x\n", bp, bp->bio_cmd);
if (bp->bio_cmd == BIO_WRITE) {
retval = cam_iosched_limiter_iodone(&isc->write_stats, bp);
if (!(bp->bio_flags & BIO_ERROR))
isc->write_stats.errs++;
isc->write_stats.out++;
isc->write_stats.pending--;
} else if (bp->bio_cmd == BIO_READ) {
retval = cam_iosched_limiter_iodone(&isc->read_stats, bp);
if (!(bp->bio_flags & BIO_ERROR))
isc->read_stats.errs++;
isc->read_stats.out++;
isc->read_stats.pending--;
} else if (bp->bio_cmd == BIO_DELETE) {
if (!(bp->bio_flags & BIO_ERROR))
isc->trim_stats.errs++;
isc->trim_stats.out++;
isc->trim_stats.pending--;
} else if (bp->bio_cmd != BIO_FLUSH) {