c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add KSTAT_TYPE_TXG type

Browse Source 
Add a new kstat type for tracking useful statistics about a TXG.
The new KSTAT_TYPE_TXG type can be used to tracks the following
statistics per-txg.

  txg          - Unique txg number
  state        - State (O)pen/(Q)uiescing/(S)yncing/(C)ommitted
  birth;       - Creation time
  nread        - Bytes read
  nwritten;    - Bytes written
  reads        - IOPs read
  writes       - IOPs write
  open_time;   - Length in nanoseconds the txg was open
  quiesce_time - Length in nanoseconds the txg was quiescing
  sync_time;   - Length in nanoseconds the txg was syncing

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2012-10-22 16:57:27 -07:00
parent 71c9f0b003
commit dba79fcbf2
2 changed files with 61 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/spl/spl-kstat.c
+39
View File
@@ -78,6 +78,14 @@ kstat_seq_show_headers(struct seq_file *f)
"name", "events", "elapsed",
"min", "max", "start", "stop");
break;
case KSTAT_TYPE_TXG:
seq_printf(f,
"%-8s %-5s %-13s %-12s %-12s %-8s %-8s "
"%-12s %-12s %-12s\n",
"txg", "state", "birth",
"nread", "nwritten", "reads", "writes",
"otime", "qtime", "stime");
break;
default:
PANIC("Undefined kstat type %d\n", ksp->ks_type);
}
@@ -190,6 +198,27 @@ kstat_seq_show_timer(struct seq_file *f, kstat_timer_t *ktp)
return 0;
}
static int
kstat_seq_show_txg(struct seq_file *f, kstat_txg_t *ktp)
{
char state;
switch (ktp->state) {
case TXG_STATE_OPEN: state = 'O'; break;
case TXG_STATE_QUIESCING: state = 'Q'; break;
case TXG_STATE_SYNCING: state = 'S'; break;
case TXG_STATE_COMMITTED: state = 'C'; break;
default: state = '?'; break;
}
seq_printf(f,
"%-8llu %-5c %-13llu %-12llu %-12llu %-8u %-8u "
"%12lld %12lld %12lld\n", ktp->txg, state, ktp->birth,
ktp->nread, ktp->nwritten, ktp->reads, ktp->writes,
ktp->open_time, ktp->quiesce_time, ktp->sync_time);
return 0;
}
static int
kstat_seq_show(struct seq_file *f, void *p)
{
@@ -216,6 +245,9 @@ kstat_seq_show(struct seq_file *f, void *p)
case KSTAT_TYPE_TIMER:
rc = kstat_seq_show_timer(f, (kstat_timer_t *)p);
break;
case KSTAT_TYPE_TXG:
rc = kstat_seq_show_txg(f, (kstat_txg_t *)p);
break;
default:
PANIC("Undefined kstat type %d\n", ksp->ks_type);
}
@@ -252,6 +284,9 @@ kstat_seq_data_addr(kstat_t *ksp, loff_t n)
case KSTAT_TYPE_TIMER:
rc = ksp->ks_data + n * sizeof(kstat_timer_t);
break;
case KSTAT_TYPE_TXG:
rc = ksp->ks_data + n * sizeof(kstat_txg_t);
break;
default:
PANIC("Undefined kstat type %d\n", ksp->ks_type);
}
@@ -396,6 +431,10 @@ __kstat_create(const char *ks_module, int ks_instance, const char *ks_name,
ksp->ks_ndata = ks_ndata;
ksp->ks_data_size = ks_ndata * sizeof(kstat_timer_t);
break;
case KSTAT_TYPE_TXG:
ksp->ks_ndata = ks_ndata;
ksp->ks_data_size = ks_ndata * sizeof(kstat_timer_t);
break;
default:
PANIC("Undefined kstat type %d\n", ksp->ks_type);
}