DLPX-72556 estat warning messages

[brad-lewis]

This PR addresses warning messages like the following:

In file included from <built-in>:3:
/virtual/include/bcc/helpers.h:47:9: warning: 'CC_USING_FENTRY' macro redefined [-Wmacro-redefined]
#define CC_USING_FENTRY
        ^
<command line>:7:9: note: previous definition is here
#define CC_USING_FENTRY 1
        ^
1 warning generated.

I executed all the scripts and do not see any warning messages or any new compilation issues.

sudo ./estat.py backend-io 1
WARNING: kprobe: blk_start_request - not found
10/31/20 - 16:45:35 UTC

Tracing enabled... Hit Ctrl-C to end.
microseconds write
value range count ------------- Distribution -------------
[700, 800) 1 |@
[900, 1000) 1 |@
[1000, 2000) 4 |@@@@@@@@@@@@@@@@@@
[3000, 4000) 1 |@

                                   iops(/s)  avg latency(us)       stddev(us)  throughput(k/s)

write 7 1509 1007773 100

                                   iops(/s)  throughput(k/s)

total 7 100

sudo ./estat.py iscsi 1
10/31/20 - 16:45:38 UTC

Tracing enabled... Hit Ctrl-C to end.
sudo ./estat.py metaslab-alloc 1
10/31/20 - 16:45:41 UTC

Tracing enabled... Hit Ctrl-C to end.
microseconds /dev/disk/by-id, success
value range count ------------- Distribution -------------
[0, 10) 101 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
[10, 20) 8 |@@@
[20, 30) 1 |@

                                   iops(/s)  avg latency(us)       stddev(us)  throughput(k/s)

/dev/disk/by-id, success 110 3 15 1087

                                   iops(/s)  throughput(k/s)

total 110 1087

sudo ./estat.py nfs 1
10/31/20 - 16:45:46 UTC

Tracing enabled... Hit Ctrl-C to end.
sudo ./estat.py nfs-by-client 1
10/31/20 - 16:45:52 UTC

Tracing enabled... Hit Ctrl-C to end.
sudo ./estat.py zio 1
10/31/20 - 16:45:55 UTC

Tracing enabled... Hit Ctrl-C to end.
microseconds write, syncw
value range count ------------- Distribution -------------
[700, 800) 1 |@
[1000, 2000) 5 |@@@@@@@@@@@@@@@@@@@@@@@@@@@

                                   iops(/s)  avg latency(us)       stddev(us)  throughput(k/s)

write, syncw 6 1223 72851 80

                                   iops(/s)  throughput(k/s)

total 6 80

sudo ./estat.py zio-queue 1
10/31/20 - 16:45:58 UTC

Tracing enabled... Hit Ctrl-C to end.
microseconds write, syncw
value range count ------------- Distribution -------------
[0, 10) 6 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

                                   iops(/s)  avg latency(us)       stddev(us)  throughput(k/s)

write, syncw 6 4 1 72

                                   iops(/s)  throughput(k/s)

total 6 72

sudo ./estat.py zpl 1
In file included from /virtual/main.c:63:
/usr/src/zfs-5.4.0-48-generic/include/sys/zvol_impl.h:52:2: error: unknown type name 'dataset_kstats_t'
dataset_kstats_t zv_kstat; /* zvol kstats */
^
1 error generated.
Traceback (most recent call last):
File "./estat.py", line 402, in
b = BPF(text=bpf_text, cflags=cflags, debug=debug_level)
File "/usr/lib/python3/dist-packages/bcc/init.py", line 349, in init
raise Exception("Failed to compile BPF module %s" % (src_file or ""))
Exception: Failed to compile BPF module
sudo ./estat.py zil
Tracing enabled... Hit Ctrl-C to end.
^C10/31/20 - 16:47:01 UTC

sudo ./estat.py txg
date txg time since last sync
| | | sync time
| | | | (%% pass 1)
| | | | | highest dirty (%%)
| | | | | | highest throttle delay
| | | | | | | | avg delay
v v v v v v v v v
Sat Oct 31 16:47:09 2020 49572 0ms 31ms (94 pass 1) 10MB ( 1) 0us 0ms 0ms
^Csudo ./estat.py arc_prefetch
10/31/20 - 16:47:18 UTC

^C10/31/20 - 16:47:20 UTC

sudo ./stbtrace.py io
{"t":"1604162843", "op":"write", "device":"sdb", "error":"0", "count":"1", "avgLatency":"2581745", "throughput":"12288", "latency":"{3000000,1}", "size":"{16383,1}"}

{"t":"1604162844", "op":"write", "device":"sdb", "error":"0", "count":"1", "avgLatency":"1154328", "throughput":"12288", "latency":"{2000000,1}", "size":"{16383,1}"}

{"t":"1604162844", "op":"write", "device":"sdc", "error":"0", "count":"1", "avgLatency":"1151306", "throughput":"12288", "latency":"{2000000,1}", "size":"{16383,1}"}

{"t":"1604162844", "op":"write", "device":"sdd", "error":"0", "count":"2", "avgLatency":"1182776", "throughput":"32768", "latency":"{2000000,2}", "size":"{16383,1},{32767,1}"}

{"t":"1604162844", "op":"write", "device":"sdb", "error":"0", "count":"1", "avgLatency":"1355694", "throughput":"12288", "latency":"{2000000,1}", "size":"{16383,1}"}

{"t":"1604162844", "op":"write", "device":"sdc", "error":"0", "count":"1", "avgLatency":"813503", "throughput":"12288", "latency":"{900000,1}", "size":"{16383,1}"}

{"t":"1604162845", "op":"read", "device":"", "error":"0", "count":"1", "avgLatency":"136719", "throughput":"8", "latency":"{200000,1}", "size":"{15,1}"}

{"t":"1604162845", "op":"write", "device":"sdb", "error":"0", "count":"1", "avgLatency":"1174231", "throughput":"12288", "latency":"{2000000,1}", "size":"{16383,1}"}

{"t":"1604162845", "op":"write", "device":"sdc", "error":"0", "count":"1", "avgLatency":"1188452", "throughput":"12288", "latency":"{2000000,1}", "size":"{16383,1}"}

{"t":"1604162845", "op":"write", "device":"sdd", "error":"0", "count":"2", "avgLatency":"1083238", "throughput":"24576", "latency":"{1000000,1},{2000000,1}", "size":"{16383,2}"}

{"t":"1604162845", "op":"write", "device":"sdb", "error":"0", "count":"30", "avgLatency":"1160701", "throughput":"183808", "latency":"{600000,2},{700000,2},{800000,5},{900000,4},{1000000,7},{2000000,7},{3000000,1},{4000000,2}", "size":"{1023,5},{2047,9},{4095,3},{8191,5},{16383,4},{32767,3},{65535,1}"}

{"t":"1604162845", "op":"write", "device":"sdc", "error":"0", "count":"31", "avgLatency":"1010402", "throughput":"196096", "latency":"{600000,2},{700000,5},{800000,5},{900000,7},{1000000,4},{2000000,7},{5000000,1}", "size":"{1023,5},{2047,9},{4095,3},{8191,5},{16383,5},{32767,3},{65535,1}"}

{"t":"1604162845", "op":"write", "device":"sdd", "error":"0", "count":"32", "avgLatency":"1155545", "throughput":"145920", "latency":"{700000,3},{800000,8},{900000,8},{1000000,4},{2000000,6},{3000000,1},{4000000,2}", "size":"{1023,6},{2047,11},{4095,3},{8191,6},{16383,3},{32767,3}"}

{"t":"1604162846", "op":"write", "device":"sdb", "error":"0", "count":"2", "avgLatency":"1282255", "throughput":"32768", "latency":"{1000000,1},{2000000,1}", "size":"{16383,1},{32767,1}"}

{"t":"1604162846", "op":"write", "device":"sdc", "error":"0", "count":"1", "avgLatency":"1055364", "throughput":"12288", "latency":"{2000000,1}", "size":"{16383,1}"}

{"t":"1604162846", "op":"write", "device":"sdd", "error":"0", "count":"1", "avgLatency":"987049", "throughput":"12288", "latency":"{1000000,1}", "size":"{16383,1}"}

^Csudo ./stbtrace.py iscsi
^Csudo ./stbtrace.py nfs
^Csudo ./stbtrace.py vfs
^Csudo ./stbtrace.py zio
{"t":"1604162854", "op":"write", "count":"5", "avgLatency":"1074423", "throughput":"61440", "latency":"{900000,1},{1000000,1},{2000000,3}", "size":"{16383,5}"}

{"t":"1604162855", "op":"write", "count":"1", "avgLatency":"1366205", "throughput":"20480", "latency":"{2000000,1}", "size":"{32767,1}"}

{"t":"1604162855", "op":"write", "count":"4", "avgLatency":"1682554", "throughput":"49152", "latency":"{900000,1},{2000000,2},{4000000,1}", "size":"{16383,4}"}

{"t":"1604162856", "op":"write", "count":"118", "avgLatency":"1316471", "throughput":"499200", "latency":"{600000,2},{700000,27},{800000,25},{900000,13},{1000000,5},{2000000,25},{3000000,11},{4000000,4},{5000000,3},{6000000,3}", "size":"{1023,21},{2047,36},{4095,19},{8191,27},{16383,7},{32767,6},{65535,2}"}

^Csudo ./stbtrace.py zpl
{"t":"1604162857", "op":"write", "sync":"0", "cached":"-1", "count":"6", "avgLatency":"34453", "throughput":"57344", "latency":"{30000,2},{40000,2},{50000,2}", "size":"{16383,5},{32767,1}"}

{"t":"1604162858", "op":"write", "sync":"0", "cached":"-1", "count":"8", "avgLatency":"35807", "throughput":"49576", "latency":"{10000,1},{30000,1},{40000,3},{50000,1},{60000,2}", "size":"{127,2},{255,1},{16383,4},{32767,1}"}