Question

我有关于内存泄漏的问题。我的程序总是通过lib / pg从db查询数据，我发现内存泄漏问题。我用pprof来调试问题发生的地方。

结果如下：

  flat  flat%   sum%        cum   cum%
1.51MB   100%   100%     1.51MB   100%  github.com/lib/pq.DialOpen
     0     0%   100%     1.51MB   100%  database/sql.(*DB).conn
     0     0%   100%     1.51MB   100%  database/sql.(*Stmt).Query
     0     0%   100%     1.51MB   100%  database/sql.(*Stmt).QueryContext
     0     0%   100%     1.51MB   100%  database/sql.(*Stmt).connStmt
     0     0%   100%     1.51MB   100%  github.com/lib/pq.(*Driver).Open
     0     0%   100%     1.51MB   100%  github.com/lib/pq.Open
     0     0%   100%     1.51MB   100%  github.com/traffic/traffic-worker/drivers/parking.(*BillGenerator).queryJobs
     0     0%   100%     1.51MB   100%  github.com/traffic/traffic-worker/drivers/pg.(*Client).QueryParkingRecordsByStatus
     0     0%   100%     1.51MB   100%  runtime.goexit

这是堆配置文件

heap profile: 4: 16384 [29: 2783280] @ heap/1048576
4: 16384 [4: 16384] @ 0x80dbf3 0x80d2f7 0x80c665 0x7fdab6 0x804296 0x8048e5 0x804dd5 0x830aea 0x85a028 0x45a9d1
    0x80dbf2    github.com/lib/pq.DialOpen+0x8b2                                /opt/gopath/src/github.com/lib/pq/conn.go:333
    0x80d2f6    github.com/lib/pq.Open+0x66                                 /opt/gopath/src/github.com/lib/pq/conn.go:241
    0x80c664    github.com/lib/pq.(*Driver).Open+0x34                               /opt/gopath/src/github.com/lib/pq/conn.go:41
    0x7fdab5    database/sql.(*DB).conn+0x145                                   /usr/local/go/src/database/sql/sql.go:965
    0x804295    database/sql.(*Stmt).connStmt+0x1e5                             /usr/local/go/src/database/sql/sql.go:1903
    0x8048e4    database/sql.(*Stmt).QueryContext+0xe4                              /usr/local/go/src/database/sql/sql.go:1941
    0x804dd4    database/sql.(*Stmt).Query+0x64                                 /usr/local/go/src/database/sql/sql.go:1978
    0x830ae9    github.com/traffic/traffic-worker/drivers/pg.(*Client).QueryParkingRecordsByStatus+0x2a9    /opt/gopath/src/github.com/traffic/traffic-worker/drivers/pg/pgClient.go:210
    0x85a027    github.com/traffic/traffic-worker/drivers/parking.(*BillGenerator).queryJobs+0x107      /opt/gopath/src/github.com/traffic/traffic-worker/drivers/parking/parking.go:119

0: 0 [0: 0] @ 0x40adfa 0x80d459 0x80d2f7 0x80c665 0x7fdab6 0x804296 0x8048e5 0x804dd5 0x830aea 0x85a028 0x45a9d1
    0x80d458    github.com/lib/pq.DialOpen+0x118                                /opt/gopath/src/github.com/lib/pq/conn.go:258
    0x80d2f6    github.com/lib/pq.Open+0x66                                 /opt/gopath/src/github.com/lib/pq/conn.go:241
    0x80c664    github.com/lib/pq.(*Driver).Open+0x34                               /opt/gopath/src/github.com/lib/pq/conn.go:41
    0x7fdab5    database/sql.(*DB).conn+0x145                                   /usr/local/go/src/database/sql/sql.go:965
    0x804295    database/sql.(*Stmt).connStmt+0x1e5                             /usr/local/go/src/database/sql/sql.go:1903
    0x8048e4    database/sql.(*Stmt).QueryContext+0xe4                              /usr/local/go/src/database/sql/sql.go:1941
    0x804dd4    database/sql.(*Stmt).Query+0x64                                 /usr/local/go/src/database/sql/sql.go:1978
    0x830ae9    github.com/traffic/traffic-worker/drivers/pg.(*Client).QueryParkingRecordsByStatus+0x2a9    /opt/gopath/src/github.com/traffic/traffic-worker/drivers/pg/pgClient.go:210
    0x85a027    github.com/traffic/traffic-worker/drivers/parking.(*BillGenerator)

那么如何解决这个内存泄漏问题呢？顺便问一下如何读取堆配置文件？谢谢你提前！

pq.DialOpen导致内存泄漏

0 个答案: