我正在编写一个C ++客户端,它处理一个包含1M行的文件并将它们插入到mongodb中。数据被插入6个不同的表中,这些表遵循不同的累积标准。我在C ++地图中累积了5000行(可配置)的数据,然后插入(upsert)到mongodb中,冲洗并重复直到文件末尾。
其中一个upsert的代码是:
void Upsert(mongo::DBClientConnection & cmon)
{
map<KEY, VALUE>::const_iterator it;
cmon.ensureIndex("test.WebNavigationUri", BSON("ClientId" << 1 << "Uri" << 1 << "Date" << 1), true);
for (it=detail.begin(); it!=detail.end(); ++it)
{
cmon.update("test.WebNavigationUri",
BSON("ClientId" << it->first.clientid << "Uri" << it->first.uri << "Date" << it->second.dHora),
BSON("$inc" << BSON("Time" << it->second.time)),
true);
}
}
除了存储的信息之外,其他upsert是相同的。 我的问题是,如果我只使用2个表,时间相当快(比MySql快4-8倍),但如果我使用全部6个,性能会下降。
有两张桌子:
WebAccumulationCategory:6877ms 261749 项目; 1465ms (1465 + 0 + 0 + 0)。
WebAccumulationClientId:5005ms 0项; 0ms(0 + 0 + 0 + 0)。
WebAccumulationPolicy:5115ms 0项; 0ms(0 + 0 + 0 + 0)。
WebAccumulationVirusName:0ms 0项; 0ms(0 + 0 + 0 + 0)。
WebNavigationCategory:5442ms 0项; 0ms(0 + 0 + 0 + 0)。
WebNavigationUri:9493ms 414610 项目; 3666ms (3666 + 0 + 0 + 0)。
有6个表(相同的文件,表格已删除):
WebAccumulationCategory:6605ms 261749 项目; 1421ms (1421 + 0 + 0 + 0)
WebAccumulationClientId:5367ms 172873项; 1753ms(1753 + 0 + 0 + 0)
WebAccumulationPolicy:6187ms 174941项; 2086ms(2086 + 0 + 0 + 0)
WebAccumulationVirusName:12ms 52项; 0ms(0 + 0 + 0 + 0)
WebNavigationCategory:18745ms 258072项; 14510ms(14510 + 0 + 0 + 0)
WebNavigationUri:33046ms 414610 项目; 27317ms (27317 + 0 + 0 + 0)
使用
在计划中衡量时间boost::posix_time::microsec_clock::local_time();
我在Oracle Server 6.5计算机中使用mongodb 2.4.9。该程序使用C ++驱动程序并在同一台机器上运行。
正如您所看到的,当我在其他4个表中插入时,WebNavigationUri从3666ms变为27317ms,但WebAccumulationCategory的时间保持不变。表格和/或我制作upsert的顺序之间似乎存在某种相互作用。 任何想法为什么会出现这种性能损失?我可以在数据库中查找/监控什么?
mongostat说:
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 *0 *0 0 1|0 0 544m 1.42g 247m 0 test:0.0% 0 0|0 0|0 62b 3k 6 12:09:59
3 *0 2696 *0 0 1|0 0 544m 1.42g 254m 4 test:23.5% 0 0|0 0|0 583k 3k 6 12:10:00
3 *0 10635 *0 0 2|0 0 544m 1.42g 248m 3 test:80.3% 0 0|0 0|1 2m 3k 6 12:10:01
*0 *0 13151 *0 0 1|0 0 544m 1.42g 252m 0 test:80.9% 0 0|0 0|1 2m 3k 6 12:10:02
*0 *0 13089 *0 0 1|0 0 544m 1.42g 253m 0 test:81.7% 0 0|0 0|1 2m 3k 6 12:10:03
*0 *0 13567 *0 0 1|0 0 544m 1.42g 250m 0 test:81.5% 0 0|0 0|1 2m 3k 6 12:10:04
*0 *0 13636 *0 0 1|0 0 544m 1.42g 248m 0 test:81.2% 0 0|0 0|1 2m 3k 6 12:10:05
*0 *0 13417 *0 0 2|0 0 544m 1.42g 255m 0 test:78.9% 0 0|0 0|1 2m 3k 6 12:10:06
*0 *0 13759 *0 0 1|0 0 544m 1.42g 256m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:10:07
*0 *0 13556 *0 0 1|0 0 544m 1.42g 257m 0 test:80.9% 0 0|0 0|1 2m 3k 6 12:10:08
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 13821 *0 0 1|0 0 544m 1.42g 257m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:10:09
*0 *0 13932 *0 0 1|0 0 544m 1.42g 258m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:10:10
*0 *0 13460 *0 0 2|0 0 544m 1.42g 258m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:10:11
*0 *0 13823 *0 0 1|0 0 544m 1.42g 256m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:10:12
*0 *0 13811 *0 0 1|0 0 544m 1.42g 253m 0 test:80.3% 0 0|0 0|1 2m 3k 6 12:10:13
*0 *0 13794 *0 0 1|0 0 544m 1.42g 251m 0 test:81.2% 0 0|0 0|1 2m 3k 6 12:10:14
*0 *0 13605 *0 0 1|0 0 544m 1.42g 247m 0 test:79.6% 0 0|1 0|1 2m 3k 6 12:10:15
*0 *0 13403 *0 0 2|0 0 544m 1.42g 261m 0 test:79.0% 0 0|0 0|1 2m 3k 6 12:10:16
*0 *0 13781 *0 0 1|0 0 544m 1.42g 261m 0 test:81.2% 0 0|0 0|0 2m 3k 6 12:10:17
*0 *0 13824 *0 0 1|0 0 544m 1.42g 262m 0 test:80.6% 0 0|0 0|1 2m 3k 6 12:10:18
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 13954 *0 0 1|0 0 544m 1.42g 262m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:10:19
*0 *0 13873 *0 0 2|0 0 544m 1.42g 262m 0 test:81.3% 0 0|0 0|1 2m 3k 6 12:10:20
*0 *0 13416 *0 0 2|0 0 544m 1.42g 261m 0 test:79.4% 0 0|0 0|1 2m 3k 6 12:10:21
*0 *0 13840 *0 0 1|0 0 544m 1.42g 261m 0 test:81.2% 0 0|0 0|1 2m 3k 6 12:10:22
*0 1 13657 *0 0 13|0 0 544m 1.42g 259m 0 test:80.4% 0 0|0 0|1 2m 11k 6 12:10:23
*0 *0 12566 *0 0 1|0 0 544m 1.42g 259m 0 test:75.5% 0 0|0 0|1 2m 3k 6 12:10:24
*0 *0 13777 *0 0 1|0 0 544m 1.42g 251m 0 test:80.4% 0 0|0 0|1 2m 3k 6 12:10:25
*0 *0 13148 *0 0 2|0 0 544m 1.42g 265m 0 test:77.6% 0 0|0 0|1 2m 3k 6 12:10:26
*0 *0 13691 *0 0 1|0 0 544m 1.42g 265m 0 test:80.7% 0 0|0 0|1 2m 3k 6 12:10:27
*0 *0 13633 *0 0 1|0 0 544m 1.42g 265m 0 test:80.2% 0 0|0 0|0 2m 3k 6 12:10:28
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 13538 *0 0 1|0 0 544m 1.42g 265m 0 test:80.7% 0 0|0 0|1 2m 3k 6 12:10:29
*0 *0 13773 *0 0 1|0 0 544m 1.42g 265m 0 test:80.4% 0 0|0 0|1 2m 3k 6 12:10:30
*0 *0 9118 *0 0 2|0 0 544m 1.42g 263m 0 test:52.9% 0 0|0 0|1 1m 3k 6 12:10:31
*0 *0 11894 *0 0 1|0 0 544m 1.42g 268m 0 test:68.6% 0 0|0 0|1 2m 3k 6 12:10:32
*0 *0 13742 *0 0 1|0 0 544m 1.42g 266m 0 test:80.6% 0 0|0 0|1 2m 3k 6 12:10:33
*0 *0 13583 *0 0 1|0 0 544m 1.42g 266m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:10:34
*0 *0 13769 *0 0 1|0 0 544m 1.42g 266m 0 test:81.4% 0 0|0 0|1 2m 3k 6 12:10:35
*0 *0 13921 *0 0 2|0 0 544m 1.42g 268m 0 test:81.1% 0 0|0 0|1 2m 3k 6 12:10:36
*0 *0 13414 *0 0 1|0 0 544m 1.42g 265m 0 test:78.4% 0 0|0 0|1 2m 3k 6 12:10:37
*0 *0 13489 *0 0 1|0 0 544m 1.42g 263m 0 test:80.7% 0 0|0 0|1 2m 3k 6 12:10:38
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 13847 *0 0 1|0 0 544m 1.42g 262m 0 test:81.3% 0 0|0 0|1 2m 3k 6 12:10:39
*0 3 13776 *0 0 1|0 0 544m 1.42g 266m 0 test:80.6% 0 0|0 0|1 2m 3k 6 12:10:40
*0 *0 14000 *0 0 2|0 0 544m 1.42g 251m 0 test:81.1% 0 0|0 0|1 2m 3k 6 12:10:41
*0 *0 13416 *0 0 1|0 0 544m 1.42g 270m 0 test:77.8% 0 0|0 0|1 2m 3k 6 12:10:42
*0 *0 13583 *0 0 1|0 0 544m 1.42g 270m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:10:43
*0 *0 13854 *0 0 1|0 0 544m 1.42g 272m 0 test:80.9% 0 0|0 0|1 2m 3k 6 12:10:44
*0 *0 13742 *0 0 1|0 0 544m 1.42g 270m 0 test:80.6% 0 0|0 0|1 2m 3k 6 12:10:45
*0 *0 13708 *0 0 2|0 0 544m 1.42g 269m 0 test:80.7% 0 0|0 0|1 2m 3k 6 12:10:46
*0 *0 13675 *0 0 1|0 0 544m 1.42g 269m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:10:47
*0 *0 11748 *0 0 1|0 0 544m 1.42g 271m 0 test:68.9% 0 0|0 0|1 2m 3k 6 12:10:48
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 9845 *0 0 1|0 1 544m 1.42g 274m 0 test:56.4% 0 0|0 0|1 1m 3k 6 12:10:49
*0 *0 13623 *0 0 2|0 0 544m 1.42g 271m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:10:50
*0 *0 13530 *0 0 2|0 0 544m 1.42g 271m 0 test:80.4% 0 0|0 0|1 2m 3k 6 12:10:51
*0 *0 14127 *0 0 1|0 0 544m 1.42g 274m 0 test:81.2% 0 0|0 0|1 2m 3k 6 12:10:52
*0 *0 13734 *0 0 1|0 0 544m 1.42g 270m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:10:53
*0 *0 13305 *0 0 1|0 0 544m 1.42g 268m 0 test:81.3% 0 0|0 0|1 2m 3k 6 12:10:54
*0 *0 13575 *0 0 1|0 0 544m 1.42g 269m 0 test:80.9% 0 0|0 0|1 2m 3k 6 12:10:55
*0 *0 13735 *0 0 2|0 0 544m 1.42g 272m 0 test:80.2% 0 0|0 0|1 2m 3k 6 12:10:56
*0 *0 13809 *0 0 1|0 0 544m 1.42g 257m 0 test:80.5% 0 0|0 0|1 2m 3k 6 12:10:57
*0 *0 13896 *0 0 1|0 0 544m 1.42g 252m 0 test:81.3% 0 0|0 0|1 2m 3k 6 12:10:58
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 13207 *0 0 1|0 0 544m 1.42g 274m 0 test:78.0% 0 0|0 0|0 2m 3k 6 12:10:59
*0 *0 14075 *0 0 1|0 0 544m 1.42g 276m 0 test:81.1% 0 0|0 0|1 2m 3k 6 12:11:00
*0 *0 11833 *0 0 2|0 0 544m 1.42g 273m 0 test:70.9% 0 0|0 0|1 2m 3k 6 12:11:01
*0 *0 13540 *0 0 1|0 0 544m 1.42g 271m 0 test:81.0% 0 0|0 0|1 2m 3k 6 12:11:02
*0 *0 13762 *0 0 1|0 0 544m 1.42g 272m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:11:03
*0 *0 13535 *0 0 1|0 0 544m 1.42g 275m 0 test:79.3% 0 0|0 0|1 2m 3k 6 12:11:04
*0 *0 13584 *0 0 1|0 0 544m 1.42g 265m 0 test:80.1% 0 0|0 0|1 2m 3k 6 12:11:05
*0 *0 9272 *0 0 2|0 0 544m 1.42g 275m 0 test:54.3% 0 0|0 0|1 1m 3k 6 12:11:06
*0 *0 8524 *0 0 1|0 0 544m 1.42g 271m 0 test:52.8% 0 0|0 0|1 1m 3k 6 12:11:07
*0 *0 13772 *0 0 1|0 0 544m 1.42g 272m 0 test:81.6% 0 0|0 0|1 2m 3k 6 12:11:08
insert query update delete getmore command flushes mapped vsize res faults locked db idx miss % qr|qw ar|aw netIn netOut conn time
*0 *0 11479 *0 0 1|0 0 544m 1.42g 271m 0 test:65.8% 0 1|0 0|1 2m 3k 6 12:11:09
*0 *0 13835 *0 0 1|0 0 544m 1.42g 252m 0 test:80.8% 0 0|0 0|1 2m 3k 6 12:11:10
*0 *0 13597 *0 0 2|0 0 544m 1.42g 276m 0 test:80.2% 0 0|0 0|1 2m 3k 6 12:11:11
*0 *0 13704 *0 0 1|0 0 544m 1.42g 275m 0 test:80.9% 0 0|0 0|1 2m 3k 6 12:11:12
*0 *0 14127 *0 0 1|0 0 544m 1.42g 279m 0 test:81.2% 0 0|0 0|1 2m 3k 6 12:11:13
*0 *0 13144 *0 0 1|0 0 544m 1.42g 275m 0 test:78.1% 0 0|0 0|1 2m 3k 6 12:11:14
*0 *0 13680 *0 0 1|0 0 544m 1.42g 273m 0 test:80.9% 0 0|0 0|1 2m 3k 6 12:11:15
*0 *0 13491 *0 0 2|0 0 544m 1.42g 273m 0 test:78.9% 0 0|0 0|0 2m 3k 6 12:11:16
*0 *0 *0 *0 0 1|0 0 544m 1.42g 265m 0 .:0.1% 0 0|0 0|0 62b 3k 5 12:11:17
*0 1 *0 *0 0 13|0 0 544m 1.42g 258m 0 config:0.1% 0 0|0 0|0 892b 11k 5 12:11:18
阻止是80%,但我想这是正常的,因为我每秒都在发送13K记录。
答案 0 :(得分:1)
Blockquote任何想法为什么会出现这种性能损失?我可以在数据库中查找/监控什么?
您可能想要运行mongostat(http://docs.mongodb.org/manual/reference/program/mongostat/):
mongostat --username <user> --password <pass>
并注意故障的数量,如果不是零,你的工作集不适合内存,因此数据访问变得非常慢。解决方案是使用索引,提供更多RAM和/或开始分片数据库
答案 1 :(得分:1)
使用不同的数据库。 MongoDB的当前版本具有数据库级别锁定,因此不使用test
所有版本,只需使用test1
,test2
,testN
...
您也可以尝试在旧版驱动程序中使用批量api(定于下一个版本)以避免网络往返。