Preface
We've got a lot of files related with system performance which generated by pt-stalk in directory "/var/lib/pt-stalk" in my last blog.We can use "cat","more","less" to print the contents of them but it is really not convenient to do so.
Introduce
pt-sift is the right tool helping us to retrieve diagnostic data easily.There're poor options of the tool to learn.Therefor,it's easy enough to sift the contents we need with no time.
Procedure
Usage
1 pt-sift FILE|PREFIX|DIRECTORY
Examples
Print the output of the files generated by pt-stalk.
1 [root@zlm2 09:50:42 /var/lib/pt-stalk]
2 #pt-sift
3 Error: is not a directory, and there are no pt-stalk files in the curent working directory (/var/lib/pt-stalk) with a prefix.
4 For more information, 'man pt-sift' or 'perldoc /usr/bin/pt-sift'.
5
6 [root@zlm2 09:50:44 /var/lib/pt-stalk]
7 #pt-sift /var/lib/pt-stalk
8
9 2018_07_09_08_19_39 2018_07_09_08_24_39
10
11 Select a timestamp from the list [2018_07_09_08_24_39] 2018_07_09_08_19_39
12 ======== zlm2 at 2018_07_09_08_19_39 DEFAULT (1 of 2) ========
13 --diskstats--
14 #ts device rd_s rd_avkb rd_mb_s rd_mrg rd_cnc rd_rt wr_s wr_avkb wr_mb_s wr_mrg wr_cnc wr_rt busy in_prg io_s qtime stime
15 {29} sda 2.4 16.9 0.0 0% 0.0 2.6 26.2 48.9 1.2 10% 0.1 4.7 3% 0 28.6 3.5 1.1
16 sda 0% 5% 0% . . . . . . . . . . . . . . . . . . . . . 20% 0% . . . .
17 --vmstat--
18 r b swpd free buff cache si so bi bo in cs us sy id wa st
19 7 5 5276 73004 0 569412 0 0 10 117 74 433 2 1 97 0 0
20 4 0 5604 72876 0 571420 2 11 213 1261 1423 11833 80 20 0 0 0
21 wa 0% . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 --innodb--
23 txns: 3xnot (0s)
24 0 queries inside InnoDB, 0 queries in queue
25 Main thread: sleeping, pending reads 0, writes 0, flush 0
26 Log: lsn = 1144708398, chkp = 1127336399, chkp age = 17371999
27 Threads are waiting at:
28 Threads are waiting on:
29 --processlist--
30 State
31 6
32 1 starting
33 1 executing
34 Command
35 6 Sleep
36 2 Query
37 --stack traces--
38 No stack trace file exists
39 --oprofile--
40 No opreport file exists
41
42 //It won't exit until you input "q".
43 //Further more,you can input other keystrokes to navigate the contents you want.
Check the disk relevant output by press "q" in above output.
1 ======== zlm2 at 2018_07_09_08_19_39 DISKSTATS (1 of 2) ========
2 Starting /usr/bin/pt-diskstats
3
4 #ts device rd_s rd_avkb rd_mb_s rd_mrg rd_cnc rd_rt wr_s wr_avkb wr_mb_s wr_mrg wr_cnc wr_rt busy in_prg io_s qtime stime
5 1.0 sda 41.2 18.2 0.7 0% 0.1 3.4 24.7 35.0 0.8 0% 0.0 1.8 6% 0 65.8 1.9 0.9
6 1.0 sda2 41.2 18.2 0.7 0% 0.1 3.4 20.6 42.0 0.8 0% 0.0 1.1 4% 0 61.7 2.0 0.6
7 1.0 dm-0 41.2 18.2 0.7 0% 0.1 3.4 20.6 42.0 0.8 0% 0.0 2.1 6% 0 61.7 2.0 0.9
8
9 //too many lines here,they've been ommited.
10
11 #ts device rd_s rd_avkb rd_mb_s rd_mrg rd_cnc rd_rt wr_s wr_avkb wr_mb_s wr_mrg wr_cnc wr_rt busy in_prg io_s qtime stime
12 28.0 sda 0.0 0.0 0.0 0% 0.0 0.0 18.4 29.9 0.5 0% 0.0 1.0 2% 0 18.4 0.1 0.9
13 28.0 sda2 0.0 0.0 0.0 0% 0.0 0.0 14.6 37.9 0.5 0% 0.0 0.6 1% 0 14.6 0.1 0.5
14 28.0 dm-0 0.0 0.0 0.0 0% 0.0 0.0 14.6 37.9 0.5 0% 0.0 1.3 2% 0 14.6 0.1 1.1
15 28.0 dm-1 0.0 0.0 0.0 0% 0.0 0.0 0.0 0.0 0.0 0% 0.0 0.0 0% 0 0.0 0.0 0.0
16
17 #ts device rd_s rd_avkb rd_mb_s rd_mrg rd_cnc rd_rt wr_s wr_avkb wr_mb_s wr_mrg wr_cnc wr_rt busy in_prg io_s qtime stimePress a key to continue or choose a different action
Check the innodb status relevant output by press "q",then press "i" in above output.
1 Press a key to continue or choose a different action
2 ======== zlm2 at 2018_07_09_08_19_39 INNODB (1 of 2) ========
3 Viewing InnoDB files
4 ... //Several otmitted blank rows here.
5 *************************** 1. row ***************************
6 Type: InnoDB
7 Name:
8 Status:
9 =====================================
10 2018-07-09 08:19:40 0x7f7ce8211700 INNODB MONITOR OUTPUT
11 =====================================
12 Per second averages calculated from the last 20 seconds
13 -----------------
14 BACKGROUND THREAD
15 -----------------
16 srv_master_thread loops: 642 srv_active, 0 srv_shutdown, 18648 srv_idle
17 srv_master_thread log flush and writes: 19290
18 ----------
19 SEMAPHORES
20 ----------
21 OS WAIT ARRAY INFO: reservation count 2620
22 OS WAIT ARRAY INFO: signal count 2117
23 RW-shared spins 0, rounds 1009, OS waits 422
24 RW-excl spins 0, rounds 29932, OS waits 1071
25 RW-sx spins 198, rounds 5940, OS waits 137
26 Spin rounds per wait: 1009.00 RW-shared, 29932.00 RW-excl, 30.00 RW-sx
27 ------------
28 TRANSACTIONS
29 ------------
30 Trx id counter 363859
31 Purge done for trx's n:o < 363858 undo n:o < 0 state: running
32 History list length 360
33 LIST OF TRANSACTIONS FOR EACH SESSION:
34 ---TRANSACTION 421649654532384, not started
35 0 lock struct(s), heap size 1136, 0 row lock(s)
36 ... //Omitted.
Check the net relevant output by press "q",then press "n" in above output.
1 Press a key to continue or choose a different action
2 ======== zlm2 at 2018_07_09_08_19_39 NETWORK (1 of 2) ========
3 Source of connections to port 3306
4 12 192.168.1.101
5 2
6 Status of connections to port 3306
7 12 ESTABLISHED
8 2 LISTEN
9 Press a key to continue or choose a different action
Check the first four samples of "show status" by press "m".
1 ======== zlm2 at 2018_07_09_08_24_39 MEXT (2 of 2) ========
2 Displaying the first 4 samples of SHOW STATUS counters
3 ... //Several otmitted blank rows here.
4 Aborted_clients 3 0 0 0
5 Aborted_connects 0 0 0 0
6 Binlog_cache_disk_use 0 0 0 0
7 Binlog_cache_use 260350 275 262 286
8 Binlog_stmt_cache_disk_use 0 0 0 0
9 Binlog_stmt_cache_use 31 0 0 0
10 Bytes_received 401068901 223306 212357 231011
11 Bytes_sent 10433667031 11046014 10595838 11481359
12 Com_admin_commands 2 0 0 0
13 Com_alter_db 0 0 0 0
14 Com_alter_db_upgrade 0 0 0 0
15 Com_alter_event 0 0 0 0
16 Com_alter_function 0 0 0 0
17 Com_alter_instance 0 0 0 0
18 Com_alter_procedure 0 0 0 0
19 Com_alter_server 0 0 0 0
20 Com_alter_table 0 0 0 0
21 Com_alter_tablespace 0 0 0 0
22 Com_alter_user 1 0 0 0
23 Com_analyze 0 0 0 0
24 Com_assign_to_keycache 0 0 0 0
25 Com_begin 259973 274 263 286
26 ... //Omitted.
Check the file list by press "q",then press "0" in above output.
1 ======== zlm2 at 2018_07_09_08_19_39 LIST (1 of 2) ========
2 -rw-r--r-- 1 root root 17K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-df
3 -rw-r--r-- 1 root root 139 Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-disk-space
4 -rw-r--r-- 1 root root 15K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-diskstats
5 -rw-r--r-- 1 root root 5 Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-hostname
6 -rw-r--r-- 1 root root 4.3K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-innodbstatus1
7 -rw-r--r-- 1 root root 4.5K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-innodbstatus2
8 -rw-r--r-- 1 root root 33K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-interrupts
9 -rw-r--r-- 1 root root 11K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-lsof
10 -rw-r--r-- 1 root root 37K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-meminfo
11 -rw-r--r-- 1 root root 384 Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-mutex-status1
12 -rw-r--r-- 1 root root 385 Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-mutex-status2
13 -rw-r--r-- 1 root root 1.1M Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-mysqladmin
14 -rw-r--r-- 1 root root 48K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-netstat
15 -rw-r--r-- 1 root root 51K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-netstat_s
16 -rw-r--r-- 1 root root 5.2K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-opentables1
17 -rw-r--r-- 1 root root 5.2K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-opentables2
18 -rw-r--r-- 1 root root 25K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-output
19 -rw-r--r-- 1 root root 9.7K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-pmap
20 -rw-r--r-- 1 root root 40K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-processlist
21 -rw-r--r-- 1 root root 25K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-procstat
22 -rw-r--r-- 1 root root 71K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-procvmstat
23 -rw-r--r-- 1 root root 8.4K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-ps
24 -rw-r--r-- 1 root root 290K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-slabinfo
25 -rw-r--r-- 1 root root 28K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-sysctl
26 -rw-r--r-- 1 root root 8.1K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-top
27 -rw-r--r-- 1 root root 73K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-transactions
28 -rw-r--r-- 1 root root 383 Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-trigger
29 -rw-r--r-- 1 root root 17K Jul 9 08:19 /var/lib/pt-stalk/2018_07_09_08_19_39-variables
30 -rw-r--r-- 1 root root 2.8K Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-vmstat
31 -rw-r--r-- 1 root root 325 Jul 9 08:20 /var/lib/pt-stalk/2018_07_09_08_19_39-vmstat-overall
32
33 //It merely output the files relevant with the prefix("2018_07_09_08_19_39") you've specified.
Check all the contents of files by press "*" in above output.
1 ======== zlm2 at 2018_07_09_08_19_39 VIEW (1 of 2) ========
2 Viewing all files //This time we'll check all the contents in each file.
3 ... //Several otmitted blank rows here.
4 TS 1531117181.030895281 2018-07-09 08:19:41
5 Filesystem 1K-blocks Used Available Use% Mounted on
6 /dev/mapper/centos-root 8775680 7993600 782080 92% /
7 devtmpfs 499536 0 499536 0% /dev
8 tmpfs 508740 0 508740 0% /dev/shm
9 tmpfs 508740 6716 502024 2% /run
10 tmpfs 508740 0 508740 0% /sys/fs/cgroup
11 /dev/sda1 508588 120796 387792 24% /boot
12 none 90264572 83357056 6907516 93% /vagrant
13 TS 1531117182.002834196 2018-07-09 08:19:42
14 Filesystem 1K-blocks Used Available Use% Mounted on
15 /dev/mapper/centos-root 8775680 7993772 781908 92% /
16 devtmpfs 499536 0 499536 0% /dev
17 tmpfs 508740 0 508740 0% /dev/shm
18 tmpfs 508740 6716 502024 2% /run
19 tmpfs 508740 0 508740 0% /sys/fs/cgroup
20 /dev/sda1 508588 120796 387792 24% /boot
21 none 90264572 83357056 6907516 93% /vagrant
22 TS 1531117183.011493818 2018-07-09 08:19:43
23 Filesystem 1K-blocks Used Available Use% Mounted on
24 /dev/mapper/centos-root 8775680 7993792 781888 92% /
25 devtmpfs 499536 0 499536 0% /dev
26 tmpfs 508740 0 508740 0% /dev/shm
27 tmpfs 508740 6716 502024 2% /run
28 tmpfs 508740 0 508740 0% /sys/fs/cgroup
29 /dev/sda1 508588 120796 387792 24% /boot
30 none 90264572 83357056 6907516 93% /vagrant
31 TS 1531117184.019711999 2018-07-09 08:19:44
32 Filesystem 1K-blocks Used Available Use% Mounted on
33 /dev/mapper/centos-root 8775680 7993820 781860 92% /
34 devtmpfs 499536 0 499536 0% /dev
35 /var/lib/pt-stalk/2018_07_09_08_19_39-df (file 1 of 30) //There're 30 files in all relative to the prefix.
Summary
- pt-sift is a tool used to quikly sift contents of the files generated by pt-stalk by variety.
- pt-sift can impove your efficiency in retrieving huge amount of files by specifying prefix.
- pt-sift relies on pt-stalk and even downloads the necessary tool when using the function of them,such as pt-diskstats,pt-mext,etc.
来源：oschina
链接：https://my.oschina.net/u/4391488/blog/3911976