简体中文（ZH-CN）English（EN）繁体中文（ZH-TW）日本語（JA）한국어（KO）Melayu（MS）Français（FR）Deutsch（DE）
Home
Article
Q&A
Course
Topic
Download
Game
Dictionary
Recent Updates

Home  >  Article  >  Database  >  [mysqldumpslow 出错] Died at /usr/local/mysql/bin/mysqldumps

[mysqldumpslow 出错] Died at /usr/local/mysql/bin/mysqldumps

WBOY
WBOYOriginal
2016-06-07 16:25:411624browse

[mysqldumpslow 报错] Died at /usr/local/mysql/bin/mysqldumpslow line 161, chunk 236. mysqldumpslow报错： Died at /usr/local/mysql/bin/mysqldumpslow line 161, chunk 236. 总结：是因为top数目太多了，mysqldumpslow遍历不过来的缘故。 /usr/local/m

[mysqldumpslow 报错] Died at /usr/local/mysql/bin/mysqldumpslow line 161, chunk 236.

mysqldumpslow报错：Died at /usr/local/mysql/bin/mysqldumpslow line 161, chunk 236.

总结：是因为top数目太多了，mysqldumpslow遍历不过来的缘故。

/usr/local/mysql/bin/mysqldumpslow -s -t 15 /root/db01-102-slow.log 


1，把r去掉试试，还是报错，参数不识别。

[root@slave ]# /usr/local/mysql/bin/mysqldumpslow -s -t 15 /root/db01-102-slow.log 

Reading mysql slow query log from 15 /root/db01-102-slow.log
Can't open 15: 没有那个文件或目录 at /usr/local/mysql/bin/mysqldumpslow line 91.
Count: 22  Time=9.61s (211s)  Lock=0.00s (0s)  Rows=1.0 (22), [dubbo]@2hosts
  select count(*)
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id

Count: 177  Time=1.40s (247s)  Lock=0.00s (0s)  Rows=1.0 (177), [dubbo]@2hosts
  select count(*) from user_info
  LEFT JOIN system_region a
  ON province_id =a.region_id
  LEFT JOIN system_region b
  ON city_id = b.region_id
  LEFT JOIN system_region c
  ON district_id = c.region_id

Count: 22  Time=13.20s (290s)  Lock=0.00s (0s)  Rows=10.0 (220), [dubbo]@2hosts
  select 
  coupon_id, coupon_lot.coupon_lot_id, coupon_lot.remark,
  coupon.code,  coupon_lot.coupon_type, coupon.state,
  coupon_lot.ckey, coupon_lot.cvalue, coupon_lot.discount, coupon_lot.type, coupon_lot.channel, 
  coupon_lot.is_reusable, coupon_lot.start_datetime,
  coupon_lot.end_datetime, coupon_lot.create_datetime, coupon.update_datetime ,coupon_lot.department,
  coupon_lot.state as couponLotState, coupon_lot.create_operator,coupon_lot.coupon_category,
  coupon_lot.pdt_code,brand.brand_name,product_category.category_name
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id
  group by coupon_lot.coupon_lot_id
  order by coupon_lot.create_datetime DESC
  limit N,N

Count: 8  Time=1.09s (8s)  Lock=0.00s (0s)  Rows=10.0 (80), [dubbo]@2hosts
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  limit N,N

Count: 1  Time=1.00s (1s)  Lock=0.00s (0s)  Rows=1.0 (1), root[root]@localhost
  select sleep(N)

Count: 1  Time=1.13s (1s)  Lock=0.00s (0s)  Rows=10.0 (10), [dubbo]@[xx]
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  , oi.order_sn 
  limit N,N

Count: 5  Time=2.47s (12s)  Lock=0.00s (0s)  Rows=0.0 (0), [dubbo]@2hosts
  select
  user_id, usename, nickname, password, user_group_id, realname, gender, email, mobilephone, 
  birthday, province_id, city_id, district_id, marry, income, remarks, create_datetime, 
  active_state, verityEmail, verityPhone, credit, last_login, last_ip, is_locked, channel, 
  tag, union_partner_uuid, union_user_safekey, is_black, qq, weibo_id, verity_email_key, 
  verity_phone_key, verity_email_datetime, verity_phone_datetime, verity_question, 
  verity_answer, cps_code, cps_time_from, cps_time_to, cps_cookie, first_channel
  from user_info where mobilephone = 'S' and (channel is null or trim(channel) ='S')

2，查看下mysqldumpslow 使用参数，-s后面需要带参数的，看了西夏at比较合适

[root@db-master-2 ~]# /usr/local/mysql/bin/mysqldumpslow  --help
Usage: mysqldumpslow [ OPTS... ] [ LOGS... ]

Parse and summarize the MySQL slow query log. Options are

  --verbose    verbose
  --debug      debug
  --help       write this text to standard output

  -v           verbose
  -d           debug
  -s ORDER     what to sort by (al, at, ar, c, l, r, t), 'at' is default
                al: average lock time
                ar: average rows sent
                at: average query time
                 c: count
                 l: lock time
                 r: rows sent
                 t: query time  
  -r           reverse the sort order (largest last instead of first)
  -t NUM       just show the top n queries
  -a           don't abstract all numbers to N and strings to 'S'
  -n NUM       abstract numbers with at least n digits within names
  -g PATTERN   grep: only consider stmts that include this string
  -h HOSTNAME  hostname of db server for *-slow.log filename (can be wildcard),
               default is '*', i.e. match all
  -i NAME      name of server instance (if using mysql.server startup script)
  -l           don't subtract lock time from total time


3，在mysqldumpslow的-s后面加入 at参数试试：  [root@slave ]# /usr/local/mysql/bin/mysqldumpslow -s at -t 15 /root/db01-102-slow.log 

[root@db-master-2 ~]# /usr/local/mysql/bin/mysqldumpslow -s at -t 15 /root/db01-102-slow.log 
Reading mysql slow query log from /root/db01-102-slow.log
Count: 22  Time=13.20s (290s)  Lock=0.00s (0s)  Rows=10.0 (220), [dubbo]@2hosts
  select 
  coupon_id, coupon_lot.coupon_lot_id, coupon_lot.remark,
  coupon.code,  coupon_lot.coupon_type, coupon.state,
  coupon_lot.ckey, coupon_lot.cvalue, coupon_lot.discount, coupon_lot.type, coupon_lot.channel, 
  coupon_lot.is_reusable, coupon_lot.start_datetime,
  coupon_lot.end_datetime, coupon_lot.create_datetime, coupon.update_datetime ,coupon_lot.department,
  coupon_lot.state as couponLotState, coupon_lot.create_operator,coupon_lot.coupon_category,
  coupon_lot.pdt_code,brand.brand_name,product_category.category_name
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id
  group by coupon_lot.coupon_lot_id
  order by coupon_lot.create_datetime DESC
  limit N,N

Count: 22  Time=9.61s (211s)  Lock=0.00s (0s)  Rows=1.0 (22), [dubbo]@2hosts
  select count(*)
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id

Count: 5  Time=2.47s (12s)  Lock=0.00s (0s)  Rows=0.0 (0), [dubbo]@2hosts
  select
  user_id, usename, nickname, password, user_group_id, realname, gender, email, mobilephone, 
  birthday, province_id, city_id, district_id, marry, income, remarks, create_datetime, 
  active_state, verityEmail, verityPhone, credit, last_login, last_ip, is_locked, channel, 
  tag, union_partner_uuid, union_user_safekey, is_black, qq, weibo_id, verity_email_key, 
  verity_phone_key, verity_email_datetime, verity_phone_datetime, verity_question, 
  verity_answer, cps_code, cps_time_from, cps_time_to, cps_cookie, first_channel
  from user_info where mobilephone = 'S' and (channel is null or trim(channel) ='S')

Count: 177  Time=1.40s (247s)  Lock=0.00s (0s)  Rows=1.0 (177), [dubbo]@2hosts
  select count(*) from user_info
  LEFT JOIN system_region a
  ON province_id =a.region_id
  LEFT JOIN system_region b
  ON city_id = b.region_id
  LEFT JOIN system_region c
  ON district_id = c.region_id

Count: 1  Time=1.13s (1s)  Lock=0.00s (0s)  Rows=10.0 (10), [dubbo]@[10.10.3.8]
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  , oi.order_sn 
  limit N,N

Count: 8  Time=1.09s (8s)  Lock=0.00s (0s)  Rows=10.0 (80), [dubbo]@2hosts
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  limit N,N

Count: 1  Time=1.00s (1s)  Lock=0.00s (0s)  Rows=1.0 (1), root[root]@localhost
  select sleep(N)

Died at /usr/local/mysql/bin/mysqldumpslow line 161,  chunk 236.
看到后面还是报错：Died at /usr/local/mysql/bin/mysqldumpslow line 161, chunk 236.

4，去看看/usr/local/mysql/bin/mysqldumpslow的第161行左右，到底是在操作什么脚本。

156 my @sorted = sort { $stmt{$b}->{$opt{s}}  $stmt{$a}->{$opt{s}} } keys %stmt;
157 @sorted = @sorted[0 .. $opt{t}-1] if $opt{t};
158 @sorted = reverse @sorted         if $opt{r};
159 
160 foreach (@sorted) {
161     my $v = $stmt{$_} || die;
162     my ($c, $t,$at, $l,$al, $r,$ar) = @{ $v }{qw(c t at l al r ar)};
163     my @users = keys %{$v->{users}};
164     my $user  = (@users==1) ? $users[0] : sprintf "%dusers",scalar @users;
165     my @hosts = keys %{$v->{hosts}};
166     my $host  = (@hosts==1) ? $hosts[0] : sprintf "%dhosts",scalar @hosts;
167     printf "Count: %d  Time=%.2fs (%ds)  Lock=%.2fs (%ds)  Rows=%.1f (%d), $user\@$host\n%s\n\n",
168             $c, $at,$t, $al,$l, $ar,$r, $_;
169 }
170 
171 sub usage {
172     my $str= shift;
看到主要是foreach (@sorted)遍历函数，也就是遍历到chunk 236的时候就died结束了，没有办法往下继续foreach了。因为以前写过代码，知道报错所在的这一行

 my $v = $stmt{$_} || die;
是遍历第一句，那么肯定是赋值语句，报错Died，chunk 236肯定是已经遍历到末尾没有数据了，看这个函数没有判断传入的参数是否为null的逻辑，所以当文件数据已经遍历完，但是命令还没有结束，所以继续遍历，遍历null的时候报错，所以进程中止了，解决办法就是做个限制不要遍历超过原始数据的字符串长度。那么我们再来看执行的命令:

 /usr/local/mysql/bin/mysqldumpslow -s at -t 15 /root/db01-102-slow.log 有 -t 15这一句，那么就是要显示出前15个记录，那么如果我的slow.log统计出来只有12个不到15个，而这里有继续遍历到15的话，那进程肯定会Died。


所以这里有2个解决方法：

1 修改/usr/local/mysql/bin/mysqldumpslow里面的源代码，加null判断。

这个过程有些复杂，暂时略过吧，期待后续空了再研究。


2 修改命令  /usr/local/mysql/bin/mysqldumpslow -s at -t 15 /root/db01-102-slow.log ，把-t 15修改成-t 10或者-t 5试试。

试了好几次，发现临界点在-t 7上面，如下：

[root@slave~]# /usr/local/mysql/bin/mysqldumpslow -s at -t 8 /root/db01-102-slow.log 
Reading mysql slow query log from /root/db01-102-slow.log
Count: 22  Time=13.20s (290s)  Lock=0.00s (0s)  Rows=10.0 (220), [dubbo]@2hosts
  select 
  coupon_id, coupon_lot.coupon_lot_id, coupon_lot.remark,
  coupon.code,  coupon_lot.coupon_type, coupon.state,
  coupon_lot.ckey, coupon_lot.cvalue, coupon_lot.discount, coupon_lot.type, coupon_lot.channel, 
  coupon_lot.is_reusable, coupon_lot.start_datetime,
  coupon_lot.end_datetime, coupon_lot.create_datetime, coupon.update_datetime ,coupon_lot.department,
  coupon_lot.state as couponLotState, coupon_lot.create_operator,coupon_lot.coupon_category,
  coupon_lot.pdt_code,brand.brand_name,product_category.category_name
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id
  group by coupon_lot.coupon_lot_id
  order by coupon_lot.create_datetime DESC
  limit N,N

Count: 22  Time=9.61s (211s)  Lock=0.00s (0s)  Rows=1.0 (22), [dubbo]@2hosts
  select count(*)
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id

Count: 5  Time=2.47s (12s)  Lock=0.00s (0s)  Rows=0.0 (0), [dubbo]@2hosts
  select
  user_id, usename, nickname, password, user_group_id, realname, gender, email, mobilephone, 
  birthday, province_id, city_id, district_id, marry, income, remarks, create_datetime, 
  active_state, verityEmail, verityPhone, credit, last_login, last_ip, is_locked, channel, 
  tag, union_partner_uuid, union_user_safekey, is_black, qq, weibo_id, verity_email_key, 
  verity_phone_key, verity_email_datetime, verity_phone_datetime, verity_question, 
  verity_answer, cps_code, cps_time_from, cps_time_to, cps_cookie, first_channel
  from user_info where mobilephone = 'S' and (channel is null or trim(channel) ='S')

Count: 177  Time=1.40s (247s)  Lock=0.00s (0s)  Rows=1.0 (177), [xx]@2hosts
  select count(*) from user_info
  LEFT JOIN system_region a
  ON province_id =a.region_id
  LEFT JOIN system_region b
  ON city_id = b.region_id
  LEFT JOIN system_region c
  ON district_id = c.region_id

Count: 1  Time=1.13s (1s)  Lock=0.00s (0s)  Rows=10.0 (10), [xx]@[xxx]
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  , oi.order_sn 
  limit N,N

Count: 8  Time=1.09s (8s)  Lock=0.00s (0s)  Rows=10.0 (80), [xx]@2hosts
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  limit N,N

Count: 1  Time=1.00s (1s)  Lock=0.00s (0s)  Rows=1.0 (1), root[root]@localhost
  select sleep(N)

Died at /usr/local/mysql/bin/mysqldumpslow line 161,  chunk 236.

-- 临界点 -t 7
[root@db-master-2 ~]# /usr/local/mysql/bin/mysqldumpslow -s at -t 7 /root/db01-102-slow.log 

Reading mysql slow query log from /root/db01-102-slow.log
Count: 22  Time=13.20s (290s)  Lock=0.00s (0s)  Rows=10.0 (220), [xx]@2hosts
  select 
  coupon_id, coupon_lot.coupon_lot_id, coupon_lot.remark,
  coupon.code,  coupon_lot.coupon_type, coupon.state,
  coupon_lot.ckey, coupon_lot.cvalue, coupon_lot.discount, coupon_lot.type, coupon_lot.channel, 
  coupon_lot.is_reusable, coupon_lot.start_datetime,
  coupon_lot.end_datetime, coupon_lot.create_datetime, coupon.update_datetime ,coupon_lot.department,
  coupon_lot.state as couponLotState, coupon_lot.create_operator,coupon_lot.coupon_category,
  coupon_lot.pdt_code,brand.brand_name,product_category.category_name
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id
  group by coupon_lot.coupon_lot_id
  order by coupon_lot.create_datetime DESC
  limit N,N

Count: 22  Time=9.61s (211s)  Lock=0.00s (0s)  Rows=1.0 (22), [dubbo]@2hosts
  select count(*)
  from coupon_lot
  left join coupon 
  on coupon.coupon_lot_id = coupon_lot.coupon_lot_id
  LEFT JOIN brand
  ON brand.brand_id=coupon_lot.brand_id
  LEFT JOIN product_category
  on product_category.category_id=coupon_lot.category_id

Count: 5  Time=2.47s (12s)  Lock=0.00s (0s)  Rows=0.0 (0), [xx]@2hosts
  select
  user_id, usename, nickname, password, user_group_id, realname, gender, email, mobilephone, 
  birthday, province_id, city_id, district_id, marry, income, remarks, create_datetime, 
  active_state, verityEmail, verityPhone, credit, last_login, last_ip, is_locked, channel, 
  tag, union_partner_uuid, union_user_safekey, is_black, qq, weibo_id, verity_email_key, 
  verity_phone_key, verity_email_datetime, verity_phone_datetime, verity_question, 
  verity_answer, cps_code, cps_time_from, cps_time_to, cps_cookie, first_channel
  from user_info where mobilephone = 'S' and (channel is null or trim(channel) ='S')

Count: 177  Time=1.40s (247s)  Lock=0.00s (0s)  Rows=1.0 (177), [xx]@2hosts
  select count(*) from user_info
  LEFT JOIN system_region a
  ON province_id =a.region_id
  LEFT JOIN system_region b
  ON city_id = b.region_id
  LEFT JOIN system_region c
  ON district_id = c.region_id

Count: 1  Time=1.13s (1s)  Lock=0.00s (0s)  Rows=10.0 (10), [dubbo]@[xxx]
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  , oi.order_sn 
  limit N,N

Count: 8  Time=1.09s (8s)  Lock=0.00s (0s)  Rows=10.0 (80), [dubbo]@2hosts
  select 
  return_sn,  relating_order_sn, return_from,  oi.order_out_sn ,
  add_time , return_type, 
  return_pay, ui.usename as userName, return_consignee, return_goods_count ,
  return_total_fee, total_paid, 
  return_desc, return_order_status,  return_pay_status ,
  return_shipping_status, order_return.lock_operator, order_return.return_invoice_no
  from order_return  LEFT JOIN   order_info oi
  on order_return.relating_order_sn = oi.order_sn 
  left join user_info ui on oi.user_id = ui.user_id
  left join order_payment on order_payment.order_sn = oi.order_sn
  order by order_return.add_time DESC
  limit N,N

Count: 1  Time=1.00s (1s)  Lock=0.00s (0s)  Rows=1.0 (1), root[root]@localhost
  select sleep(N)

[root@db-master-2 ~]#

最终总结：
mysqldumpslow报错：Died at /usr/local/mysql/bin/mysqldumpslow line 161, chunk 236. 是因为top数目太多了，mysqldumpslow遍历不过来的缘故。

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：切身体验MySQL的索引对搜索性能的提升Next article：python基于mysql实现的容易队列以及跨进程锁

Related articles

See more