2.0
2015-04-09T12:56:43Z
Templates
Template Disk Performance
Template Disk Performance
Templates
Disk Performance
Disk discovery
0
custom.vfs.discover_disks
3600
0
0
0
0
0
:
30
Disk:$1:IO:Currently Active
0
0
custom.vfs.dev.io.active[{#DEVICENAME}]
60
30
365
0
3
io
0
0
0
0
1
0
0
Field #12
Number of I/Os currently in progress.
The only field that should go to zero. Incremented as requests are given to appropriate struct request_queue and decremented as they finish.
0
Disk Performance
Disk:$1:IO:ms
0
0
custom.vfs.dev.io.ms[{#DEVICENAME}]
60
30
365
0
3
ms
1
0
0
0
1
0
0
Field #13
Number of milliseconds spent doing I/Os. This field increases so long as field #12 (custom.vfs.dev.io.active) is nonzero.
0
Disk Performance
Disk:$1:IO:Weight:ms
0
0
custom.vfs.dev.weight.io.ms[{#DEVICENAME}]
60
30
365
0
3
ms
1
0
0
0
1
0
0
Field #14
Weighted number of milliseconds spent doing I/Os.
This field is incremented at each I/O start, I/O completion, I/O merge, or read of these stats by the number of I/Os in progress (field 12) times the number of milliseconds spent doing I/O since the last update of this field. This can provide an easy measure of both I/O completion time and the backlog that may be accumulating.
0
Disk Performance
Disk:$1:Read:Bytes/sec
0
1
custom.vfs.dev.read.sectors[{#DEVICENAME}]
60
30
365
0
3
B/sec
1
0
0
0
512
0
0
Field #6
This is the total number of sectors read successfully.
0
Disk Performance
Disk:$1:Read:Bytes/sec [z]
0
1
vfs.dev.read[{#DEVICENAME},sectors]
60
30
365
1
3
B/sec
1
0
0
0
512
0
0
This is the total number of sectors read successfully.
0
Disk Performance
Disk:$1:Read:Merged
0
0
custom.vfs.dev.read.merged[{#DEVICENAME}]
60
30
365
0
3
Ops/s
1
0
0
0
1
0
0
Field #5
Number of reads merged.
Reads and writes which are adjacent to each other may be merged for efficiency. Thus two 4K reads may become one 8K read before it is ultimately handed to the disk, and so it will be counted (and queued) as only one I/O. This field lets you know how often this was done.
0
Disk Performance
Disk:$1:Read:ms
0
0
custom.vfs.dev.read.ms[{#DEVICENAME}]
60
30
365
0
3
ms
1
0
0
0
1
0
0
Field #7
Number of milliseconds spent reading
This is the total number of milliseconds spent by all reads (as measured from __make_request() to end_that_request_last()).
0
Disk Performance
Disk:$1:Read:ms [z]
0
0
vfs.dev.read[{#DEVICENAME},ops]
60
30
365
1
0
ms
1
0
0
0
1
0
0
This is the total number of milliseconds spent by all reads (as measured from __make_request() to end_that_request_last()).
0
Disk Performance
Disk:$1:Read:Ops per second
0
0
custom.vfs.dev.read.ops[{#DEVICENAME}]
60
30
365
0
3
ops/s
1
0
0
0
1
0
0
Field #4
This is the total number of reads completed successfully.
0
Disk Performance
Disk:$1:Read:Ops per second [z]
0
0
vfs.dev.read[{#DEVICENAME},operations]
60
30
365
1
3
ops/s
1
0
0
0
1
0
0
This is the total number of reads completed successfully.
0
Disk Performance
Disk:$1:Write:Bytes/sec
0
1
custom.vfs.dev.write.sectors[{#DEVICENAME}]
60
30
365
0
3
B/sec
1
0
0
0
512
0
0
Field #10
This is the total number of sectors written successfully.
0
Disk Performance
Disk:$1:Write:Bytes/sec [z]
0
1
vfs.dev.write[{#DEVICENAME},sectors]
60
30
365
1
3
B/sec
1
0
0
0
512
0
0
This is the total number of sectors read successfully.
0
Disk Performance
Disk:$1:Write:Merged
0
0
custom.vfs.dev.write.merged[{#DEVICENAME}]
60
30
365
0
3
Ops/s
1
0
0
0
1
0
0
Field #9
Number of writes merged.
Reads and writes which are adjacent to each other may be merged for efficiency. Thus two 4K reads may become one 8K read before it is ultimately handed to the disk, and so it will be counted (and queued) as only one I/O. This field lets you know how often this was done.
0
Disk Performance
Disk:$1:Write:ms
0
0
custom.vfs.dev.write.ms[{#DEVICENAME}]
60
30
365
0
3
ms
1
0
0
0
1
0
0
Field #11
Number of milliseconds spent writing.
This is the total number of milliseconds spent by all writes (as measured from __make_request() to end_that_request_last()).
0
Disk Performance
Disk:$1:Write:ms [z]
0
0
vfs.dev.write[{#DEVICENAME},ops]
60
30
365
1
0
ms
1
0
0
0
1
0
0
This is the total number of milliseconds spent by all reads (as measured from __make_request() to end_that_request_last()).
0
Disk Performance
Disk:$1:Write:Ops per second
0
0
custom.vfs.dev.write.ops[{#DEVICENAME}]
60
30
365
0
3
ops/s
1
0
0
0
1
0
0
Field #8
This is the total number of writes completed successfully.
0
Disk Performance
Disk:$1:Write:Ops per second [z]
0
0
vfs.dev.write[{#DEVICENAME},operations]
60
30
365
1
3
ops/s
1
0
0
0
1
0
0
This is the total number of reads completed successfully.
0
Disk Performance
Disk {#DEVICENAME} - Bytes/second
900
200
0.0000
100.0000
1
1
0
1
0
0.0000
0.0000
1
0
0
0
0
5
00C800
0
2
0
-
Template Disk Performance
custom.vfs.dev.read.sectors[{#DEVICENAME}]
1
5
C80000
0
2
0
-
Template Disk Performance
custom.vfs.dev.write.sectors[{#DEVICENAME}]
Disk {#DEVICENAME} - Merged
900
200
0.0000
100.0000
1
1
0
1
0
0.0000
0.0000
0
0
0
0
0
0
00C800
0
2
0
-
Template Disk Performance
custom.vfs.dev.read.merged[{#DEVICENAME}]
1
0
C80000
0
2
0
-
Template Disk Performance
custom.vfs.dev.write.merged[{#DEVICENAME}]
Disk {#DEVICENAME} - Ops/second
900
200
0.0000
100.0000
1
1
0
1
0
0.0000
0.0000
0
0
0
0
0
0
00C800
0
2
0
-
Template Disk Performance
custom.vfs.dev.read.ops[{#DEVICENAME}]
1
0
C80000
0
2
0
-
Template Disk Performance
custom.vfs.dev.write.ops[{#DEVICENAME}]
Disk {#DEVICENAME} - Overview
900
200
0.0000
100.0000
1
1
0
1
0
0.0000
0.0000
0
0
0
0
0
0
00C8C8
0
7
0
-
Template Disk Performance
custom.vfs.dev.io.active[{#DEVICENAME}]
1
0
C8C800
1
7
0
-
Template Disk Performance
custom.vfs.dev.read.sectors[{#DEVICENAME}]
2
0
960000
0
7
0
-
Template Disk Performance
custom.vfs.dev.read.merged[{#DEVICENAME}]
3
0
C8C8C8
0
7
0
-
Template Disk Performance
custom.vfs.dev.read.ops[{#DEVICENAME}]
4
0
009600
1
7
0
-
Template Disk Performance
custom.vfs.dev.write.sectors[{#DEVICENAME}]
5
0
960096
0
7
0
-
Template Disk Performance
custom.vfs.dev.write.merged[{#DEVICENAME}]
6
0
000096
0
7
0
-
Template Disk Performance
custom.vfs.dev.write.ops[{#DEVICENAME}]