If you have a Linux server running at your office or at a data center for which you are responsible, you want to maintain an uptime of as close to a hundred percent. ¸¸¾à ´ç½ÅÀÌ ´ç½ÅÀÇ »ç¹«½Ç¿¡¼ ¸®´ª½º ¼¹ö¸¦ ½ÇÇàÇϰųª µ¥ÀÌÅÍ ¼¾Å͸¦À§ÇÑ ´ç½ÅÀÇ Ã¥ÀÓÀÌ Àִµ¥, ´ç½Åµéó·³ 100 %¿¡ °¡±î¿îÀÇ °¡µ¿ ½Ã°£À» À¯ÁöÇÏ°í ½ÍÁö. In such a case you want to make sure you keep an eye on how the system is running. ±×·¯ÇÑ °æ¿ì¿¡´Â ½Ã½ºÅÛÀ» ½ÇÇàÇÏ´Â ¹æ¹ýÀ» °è¼Ó ÁöÄѺÁ È®½ÇÇϰÔÇÏ°í ½Í½À´Ï´Ù. To be precise you want to monitor all the system resources that contribute to the system running fine which then results in a high uptime. ´ç½ÅÀº ±× ½Ã½ºÅÛÀº ³ôÀº °¡µ¿¿¡ ³ª¼ ÁÁÀº °á°ú¸¦ ½ÇÇàÇÏ´Â µ¥ ±â¿©ÇÏ·Á´Â ¸ðµç ½Ã½ºÅÛ ÀÚ¿øÀ» ¸ð´ÏÅÍÇϰí Á¤È®ÇϰÔ. Memory, CPU, disk usage¡¦ are some of the things you want to observe. ¸Þ¸ð¸®, CPU, µð½ºÅ© »ç¿ë·® ... ´ç½ÅÀ» °üÂûÇÏ°í ½ÍÀº ¸î °¡Áö °Íµé ÁßÀÇ ÇϳªÀÌ´Ù. We would usually use a combination of the tools that come with a Linux or UNIX installation, such as ¡°free¡±, ¡°top¡±, ¡°vmstat¡±¡¦ I¡¯ll introduce you to a tool that gives you just about all the info that the other tools combined give you, all under one roof - Dstat. ¿ì¸®°¡ ÀϹÝÀûÀ¸·Î, "vmstat"... ÀÌÁ¦ ¸· ¸ðµç Á¤º¸°¡ ´ç½ÅÀ»ÁÖ´Â µµ±¸¸¦ ¼Ò°³ ÇÒ°Ô¿ä ¸®´ª ½º³ª À¯´Ð½º ¼³Ä¡, ´ÙÀ½°ú °°Àº "ÀÚÀ¯"·Î ¿À½Ã±â µµ±¸ÀÇ Á¶ÇÕ ","°¡±â »ç¿ëÇÒ °ÍÀÌ ±× ÇÑ ÁöºØ ¾Æ·¡ ´Ù¸¥ µµ±¸¸¦ »ç¿ëÇϸé ÁÙ °áÇÕ, ¿ì¸® ¸ðµÎ - Dstat. The developer of this command line tool, Dag Wieers, calls it ¡°a versatile replacement for vmstat, iostat, netstat and ifstat¡±. ÀÌ ¸í·ÉÁÙ µµ±¸, ´ë±× WieersÀÇ °³¹ßÀÚ, vmstat, iostat,¿¡¼ netstat¿Í ifstatÀ»À§ÇÑ "´Ù¿ëµµÀÇ ±³Ã¼"¸¦ È£ÃâÇÕ´Ï´Ù. He adds that ¡°Dstat overcomes some of their limitations and adds some extra features¡¦¡± To me Dstat is the mother of all command line system monitoring tools. ±×´Â "ÀϺΠDstat ÀÚ½ÅÀÇ ÇѰ踦 ±Øº¹ÇÏ°í ¸î °¡Áö Ãß°¡ ±â´ÉÀ» Ãß°¡ ..."³¯ À§ÇØ Dstat ¸ðµç ¸í·ÉÁÙ ½Ã½ºÅÛ ¸ð´ÏÅ͸µ µµ±¸ÀÇ ¾î¸Ó´ÏÀÔ´Ï´Ù. It¡¯s simple to install, easy to use, can be tweaked with ease, and it generates reports that you can plot as a graph to impress your boss. ±×°ÍÀº, »ç¿ëÇϱ⠽¬¿î ¼³Ä¡, ½±°Ô ºÒÅëÀÌ µÉ ¼öÀÖ´Â, °£´ÜÇÏ°í ±×°ÍÀ»º¸°í ÀÚ³×°¡ »ó»ç¿¡°Ô ÁÁÀº ÀλóÀ» ±×·¡ÇÁ·Î À½¸ð ¼ö¸¦ »ý¼ºÇÕ´Ï´Ù.
Installing Dstat ¼³Ä¡ Dstat
Start by downloading the Dstat installer. the DstatÀ» ´Ù¿î·ÎµåÇÏ¿© ¼³Ä¡¸¦ ½ÃÀÛÇÕ´Ï´Ù. Point your web browser to the Dstat project¡¯s homepage - ¿äÁ¡ ±ÍÇÏÀÇ À¥ ºê¶ó¿ìÀú Dstat ÇÁ·ÎÁ§Æ®ÀÇ È¨ÆäÀÌÁö·Î - http://dag.wieers.com/home-made/dstat/ . Scroll down to the section of the page where the downloads are listed. ½ºÅ©·Ñ ´Ù¿î·Îµå ÆäÀÌÁöÀÇ ÇØ´ç ¼½¼Ç¿¡ ³ª¿µÇ¾îÀÖ½À´Ï´Ù. Pick the flavor of Linux on which you want to install the application and click on the download link. ¸®´ª½ºÀÇ Çâ±â¸¦ ¹Þ¾Æ ¾î¶² ÀÀ¿ë ÇÁ·Î±×·¥À» Ŭ¸¯ÇÏ¸é ´Ù¿î·Îµå ¸µÅ©¸¦ ¼³Ä¡ÇϰíÀÚÇÕ´Ï´Ù. Now download the latest version of Dstat for the version of the Linux distribution you are running. ÀÌÁ¦ ½ÇÇàÇÏ´Â ¸®´ª½º ¹èÆ÷ÆÇÀÇ ¹öÀü¿¡ ´ëÇÑ DstatÀÇ ÃֽйöÀüÀ» ´Ù¿î·ÎµåÇÕ´Ï´Ù. I¡¯ll show you how to do it for a Red Hat Enterprise Linux version 4 machine: ¾î¶»°Ô ·¹µåÇÞ ¿£ÅÍ ÇÁ¶óÀÌÁî ¸®´ª½º ¹öÀü 4 ±â°è¸¦ À§ÇØ ±×·¸°ÔÀ» º¸¿© µå¸±°Ô¿ä :
# wget http://dag.wieers.com/rpm/packages/dstat/dstat-0.6.6-1.el4.rf.noarch.rpm # wget http://dag.wieers.com/rpm/packages/dstat/dstat-0.6.6-1.el4.rf.noarch.rpm
Now install Dstat: Áö±Ý Dstat ¼³Ä¡ :
# rpm -Uvh dstat-0.6.6-1.el4.rf.noarch.rpm # rpm¿¡¼ - Uvh dstat - 0.6.6 - 1.el4.rf.noarch.rpm
If the installation went though without errors, that¡¯s it, you have Dstat installed and ready for use. ±×·¡µµ ¿À·ù¾øÀÌ ¼³Ä¡ÇÏ´Â °æ¿ì¿¡´Â, ±×°Ô ´Ù¿¹¿ä °£, Dstat ¼³Ä¡ÇÏ°í »ç¿ëÇÒ Áغñ°¡ ÇÊ¿äÇÕ´Ï´Ù. If there were some dependencies that came up during the installation just install the required packages and try again. ´ÜÁö ÇÊ¿äÇÑ °æ¿ì¿¡´Â ±× ¼³Ä¡ Áß¿¡ ÆÐŰÁö¸¦ ¼³Ä¡ÇÏ°í ´Ù½Ã ½Ãµµ¸¦ ¿Â ÀϺΠÁ¾¼Ó¼ºÀ»Çß´Ù. I don¡¯t think that Dstat has too many dependencies, so you should not face any problems. ³»°¡ ³Ê¹« ¸¹Àº ÀÇÁ¸¼ºÀ» DstatÀÖ´Ù, ±×·¡¼ ´ç½ÅÀº ¾î¶² ¹®Á¦°¡ ¾ó±¼À» ¾ÈÇÑ´Ù°í »ý°¢ÇÏÁö ¾Ê¾Æ.
Using Dstat Dstat »ç¿ë
With Dstat installed on your system you should be good to go. Dstat¿Í ÇÔ²² ¿©·¯ºÐÀÇ ½Ã½ºÅÛ¿¡ Àß °¡°íÀִ°¡ ¼³Ä¡µÇ¾î ÀÖ¾î¾ßÇÕ´Ï´Ù. Begin by launching the command from a terminal: Å͹̳ο¡¼ ¸í·ÉÀ» ½ÇÇàÇÏ¿© ½ÃÀÛÇÕ´Ï´Ù :
# dstat # dstat
The output would be something like the following. Ãâ·ÂÀº ´ÙÀ½°ú °°Àº ¹º°¡°¡ ´õÀÖÀ» °ÍÀÌ´Ù. Hit the key combination of ctrl+c to exit. ÀÇ Å° Á¶ÇÕÀ» Á¶È¸Çϸé Ctrl + C¸¦ Á¾·áÇÕ´Ï´Ù.
# dstat # dstat
—-total-cpu-usage—- -disk/total -net/total- —paging– —system– - ÃÑ -ÀÇ cpu - »ç¿ë·® - -disk/total -net/total- - ÆäÀÌ¡ - - ½Ã½ºÅÛ -
usr sys idl wai hiq siq|_read write|_recv _send|__in_ _out_|_int_ _csw_ ¾ûµ¢ÀÌ´Â ´õ¿í´õ¿¡¼ sys usr ±âÀÇ IDL siq | ¾²±â | _recv _send | __in_ _out_ | _read _int_ _csw_
7 1 91 1 0 0| 0 0 | 0 0 | 0 0 | 0 0 7¿ù 1ÀÏ 91 1 0 0 | 0 0 | 0 0 | 0 0 | 0 0
1 0 99 0 0 0| 0 0 | 0 0 | 0 0 |1051 1945 1 0 99 0 0 0 | 0 0 | 0 0 | 0 0 | 1051 1945
0 0 100 0 0 0| 0 12k|2269B 11.2k| 0 0 |1031 1923 0 0 100 0 0 0 | 0 12k | 2269B 11.2k | 0 0 | 1031 1923
1 0 99 0 0 0| 0 40k| 0 0 | 0 0 |1078 2235 1 0 99 0 0 0 | 0´Â 40K | 0 0 | 0 0 | 1078 2235
0 0 100 0 0 0| 0 16k|6027B 21.5k| 0 0 |1008 2219 0 0 100 0 0 0 | 0 16K | 6027B 21.5k | 0 0 | 1008 2219
There are a number of options available for Dstat. °Å±â Dstat ¿É¼ÇÀ» »ç¿ëÇÒ ¼öÀÖ½À´Ï´Ù. As I mentioned earlier Dstat is quite easy to tweak. ÀÌÀü Dstat ³»°¡ ²Ï ÆÃ°Üº¸°í ½±°Ô ¾ð±ÞÇß´Ù. So if you want to limit the data reading to the CPU, disk, and network, run the following command: ±×·¡¼ ¸¸¾à ´ç½ÅÀÌ µ¥ÀÌÅÍ´Â CPU, µð½ºÅ©, ³×Æ®¿öÅ©, ´ÙÀ½ ¸í·ÉÀ» ½ÇÇàÇÏ·Á´Â µ¶¼ Çѵµ :
# dstat -CDN # dstat - µ¿°ÅÀÎ
-disk/total -net/total- —paging– —system– -disk/total -net/total- - ÆäÀÌ¡ - - ½Ã½ºÅÛ -
_read write|_recv _send|__in_ _out_|_int_ _csw_ ¾²±â | _recv _send | __in_ _out_ | _read _int_ _csw_
0 0 | 0 0 | 0 0 | 0 0 0 0 | 0 0 | 0 0 | 0 0
0 12k|2295B 9603B| 0 0 |1053 1957 0 12k | 2295B 9603B | 0 0 | 1053 1957
0 0 | 594B 0 | 0 0 |1002 1893 0 0 | 594B 0 | 0 0 | 1002 1893
0 960k| 292B 3346B| 0 0 |1072 2012 0 960k | 292B 3346B | 0 0 | 1072 2012
0 4096B| 64B 0 | 0 0 |1031 1939 0 4096B | 64B 0 | 0 0 | 1031 1939
You can find more options in the application¡¯s help document which you can access by entering the following: ´ç½ÅÀº ÀÀ¿ë ÇÁ·Î±×·¥ÀÇ µµ¿ò¸» ¹®¼¿¡¼ ´ÙÀ½À» ÀÔ·ÂÇÏ¿© ¾×¼¼½ºÇÒ ¼öÀÖ´Â ´õ ¸¹Àº ¿É¼ÇÀ» ãÀ» ¼öÀÖ½À´Ï´Ù :
# dstat -h # dstat - H ¿¬ÇÕȸ
Play with the options a little so you get comfortable with them. ¿É¼Ç°ú ÇÔ²² ±×µé°ú ÇÔ²² Æí¾ÈÇÏ°Ô Àç»ýµÇ¹Ç·Î ¾à°£. The default interval between data reads is two seconds. µ¥ÀÌÅÍ °£ÀÇ ±âº» 2 ÃÊ °£°ÝÀ» ÀнÀ´Ï´Ù. You can change that interval if you need to. ÇÊ¿äÇÏ¸é ±× °£°ÝÀ» º¯°æÇÒ ¼öÀÖ½À´Ï´Ù. To increase the interval to ten seconds enter the following: 10 ÃÊ °£°ÝÀ¸·Î ³ôÀÌ·Á¸é ´ÙÀ½À» ÀÔ·Â :
# dstat 10 # dstat 10
Another useful feature is to get aggregated updates for each entry. ¶Ç ´Ù¸¥ À¯¿ëÇÑ ±â´ÉÀº °¢ Ç׸ñ¿¡ ´ëÇÑ ÃÑüÀû ¾÷µ¥ÀÌ Æ®¸¦¹Þ´Â ¹æ¹ýÀÌ´Ù. So you can have Dstat give you an update every ten seconds in a new line, but as the data changes your line itself gets updated every second. ¸ÅÃʸ¶´Ù ¾÷µ¥ÀÌ Æ®¸¦ ¸ÃÀ¸¸é ±× ÀÚü·Î µ¥ÀÌÅÍ ¶óÀÎÀ» º¯°æ Dstat ±×·¡¼ ´ç½ÅÀº »õ·Î¿î ¶óÀο¡¼ 10 Ãʸ¶´Ù ¾÷µ¥ÀÌ Æ®¸¦ ¾Ë·ÁÁÖÁö,ÇÏÁö¸¸ °¡Áú ¼öÀÖ½À´Ï´Ù.
You might optionally want Dstat to give you five updates with a frequency of three seconds. ´ç½ÅÀº ´ç½ÅÀÌ »ïÃÊÀÇ Á֯ļö ¼±Åà Dstat 5 ¾÷µ¥ÀÌ Æ®¸¦ÁÖ°í ½Í¾î ÇÒ ¼öµµÀÖ½À´Ï´Ù. Here¡¯s how you would go about doing that: ¿©±â¿¡ ´ëÇØ ¾î¶»°Ô Áö³» °¥ °Í :
# dstat 3 5 # dstat 5¿ù 3ÀÏ
—-total-cpu-usage—- -disk/total -net/total- —paging– —system– - ÃÑ -ÀÇ cpu - »ç¿ë·® - -disk/total -net/total- - ÆäÀÌ¡ - - ½Ã½ºÅÛ -
usr sys idl wai hiq siq|_read write|_recv _send|__in_ _out_|_int_ _csw_ ¾ûµ¢ÀÌ´Â ´õ¿í´õ¿¡¼ sys usr ±âÀÇ IDL siq | ¾²±â | _recv _send | __in_ _out_ | _read _int_ _csw_
3 1 95 2 0 0| 0 0 | 0 0 | 0 0 | 0 0 1¿ù 3ÀÏ 95 2 0 0 | 0 0 | 0 0 | 0 0 | 0 0
2 11 87 1 0 0| 0 180k|2581B 3239B| 0 0 |1136 697 2¿ù 11ÀÏ 87 1 0 0 | 0 180k | 2581B 3239B | 0 0 | 1136 697
7 8 85 0 0 0| 0 0 | 115k 106k| 0 0 |1603 3985 7¿ù 8ÀÏ 85 0 0 0 | 0 0 | 115k 106k | 0 0 | 1603 3985
2 1 98 0 0 0| 0 0 |77.5k 170k| 0 0 |1744 3856 1¿ù 2ÀÏ 98 0 0 0 | 0 0 | 77.5k 170k | 0 0 | 1744 3856
1 0 100 0 0 0| 0 0 |3451B 9993B| 0 0 |1045 149 1 0 100 0 0 0 | 0 0 | 3451B 9993B | 0 0 | 1045 149
2 1 94 4 0 0| 0 276k|20.4k 31.1k| 0 0 |1219 804 1¿ù 2ÀÏ 94 4 0 0 | 0 276k | 20.4k 31.1k | 0 0 | 1219 804
The feature that I find most useful is the output. ÀÌ ±â´ÉÀÌ °¡Àå À¯¿ë Ãâ·ÂµË´Ï´Ù. Dstat allows you to have the output of a session written into a comma separated file which can later be imported into a spreadsheet application such as Microsoft Excel and the data can be plotted into a graph. DstatÇÏ¸é ¼¼¼ÇÀº ³ªÁß¿¡ Microsoft Excel ¹× µ¥ÀÌÅ͸¦ ±×·¡ÇÁ·Î ²Ù¸ì´Ù ¼ö¿Í °°Àº ½ºÇÁ·¹µå ½ÃÆ® ÀÀ¿ë ÇÁ·Î±×·¥À¸·Î °¡Á®¿Ã ¼öÀÖ´Â ½°Ç¥·Î ºÐ¸®µÈ ÆÄÀÏ¿¡ ±â·ÏÀÇ Ãâ·ÂÀ» °¡Áú ¼öÀÖ½À´Ï´Ù. Here is how it can be used. ¿©±â¿¡ ¾î¶»°Ô »ç¿ëµÉ ¼öÀÖ´Ù.
# dstat –output /tmp/dstat_data.csv -CDN # dstat - Ãâ·Â´Â / tmp / dstat_data.csv - µ¿°ÅÀÎ
Let the above command run while you run your applications or do your testing on this machine. ÇÑÆí ´ç½ÅÀÌ ÄÄÇ»ÅÍ¿¡ ¾ÖÇà ¸®ÄÉÀ̼ÇÀ» ½ÇÇàÇϰųª ±ÍÇÏÀÇ Å×½ºÆ®¸¦ ÇÒ À§ÀÇ ¸í·ÉÀ» ½ÇÇàÇÏÀÚ. Hit the key combination of ctrl+c when you are done. ÀÇ Å° Á¶ÇÕÀ» Á¶È¸Çϸé Ctrl + C¸¦ ¿Ï·áÇϸéµË´Ï´Ù. Open the file dstat_data.csv with a spreadsheet application such as Microsoft Excel or Open Office. Microsoft ExcelÀ̳ª ¿ÀÇ ¿ÀÇǽº¸¦ ¿°í °°Àº ½ºÇÁ·¹µå ½ÃÆ® ÀÀ¿ë ÇÁ·Î±×·¥°ú ÇÔ²² dstat_data.csv ÆÄÀÏÀÔ´Ï´Ù. You can then select the columns you want plotted into a graph and let your spreadsheet application do the magic. ±×·± ´ÙÀ½ ±×·¡ÇÁ·Î ¿ª¸ð¸¦ ¿øÇÏ´Â ½ºÇÁ·¹µå ½ÃÆ® ÀÀ¿ë ÇÁ·Î±×·¥¿¡¼ ¸¶¹ýÀ» ÇØ º¸ÀÚ ¿À» ¼±ÅÃÇÒ ¼öÀÖ½À´Ï´Ù.
Get a Report by Mail ¿ìÆíÀ¸·Î ¸®Æ÷Æ®¸¦ ¾òÀ»
There may be cases wherein you want to observe how your server is performing over a period of time. ÀÌ¹Ì ¿©±â¼ ¾ó¸¶³ª ±ÍÇÏÀÇ ¼¹ö´Â ÀÏÁ¤ ±â°£ µ¿¾ÈÀÇ ½ÇÀûÀ» °üÂûÇÏ·Á´Â °æ¿ì°¡ÀÖÀ» ¼öÀÖ½À´Ï´Ù. You can setup a background process in Linux that will give you a reading with a certain interval, generate a report, and mail out the file to you. ¸®´ª½º¿¡ ¼³Ä¡ÇÏ½Ç ¼öÀÖ½À´Ï´Ù ¹é±×¶ó¿îµå ÇÁ·Î¼¼½º°¡ ÀÏÁ¤ÇÑ °£°ÝÀ» °¡Áø ´ç½ÅÀº Àбâ, º¸°í¼¸¦ »ý¼º Á¦°øµÇ¸ç, ¸ÞÀÏ¿¡ ÆÄÀÏÀ» ¹ÛÀ¸·Î. This can be especially useful during a stress-test. À̰ÍÀº ƯÈ÷ ½ºÆ®·¹½º - Å×½ºÆ® Áß¿¡ À¯¿ëÇÒ ¼öÀÖ½À´Ï´Ù. Here¡¯s how you could do that. ¿©±â¼ ¾î¶»°Ô ÇÒ ¼ö ¾ø¾î¿ä. The following script will run Dstat for three hours, reading the data every 30 seconds, and will mail out the report to me@myemailid.com. ´ÙÀ½ ½ºÅ©¸³Æ®¸¦ 3 ½Ã°£ µ¿¾È, ¸Å 30 ÃÊ, ±×¸®°í me@myemailid.com¿¡°Ô º¸°í¼¸¦ ¿ìÆíÀ¸·Î º¸³»µå¸³´Ï´Ù Dstat µ¥ÀÌÅ͸¦ ÀÐ°í ½ÇÇàµË´Ï´Ù.
#!/bin/bash #! / ºó / bash´Â
dstat –output /tmp/dstat_data_mail.csv -CDN 30 360 dstat - Ãâ·Â´Â / tmp / dstat_data_mail.csv - µ¿°ÅÀÎ 30 360
mutt -a /tmp/dstat_data_mail.csv -s ¡°Dstat Report for 3 hour run¡± me@myemailid.com < /dev/null ¶Ë°³ -´Â / tmp / dstat_data_mail.csv - "3 ½Ã°£ ½ÇÇà"me@myemailid.com <´Â / dev / nullÀ»À§ÇÑ Dstat º¸°í¼
Save the above script in a file called dstat_script.sh on your server, give it executable permission and then run it as a background process: À§ÀÇ ½ºÅ©¸³Æ® ÆÄÀÏ¿¡ ÀúÀåÇÏ¿© ¼¹ö¿¡ dstat_script.sh, ±×°ÍÀ» ½ÇÇà ±ÇÇÑÀ»ÁÖ°í ³ª¼¶ó´Â ¹é±×¶ó¿îµå ÇÁ·Î¼¼½º·Î ½ÇÇà :
# chmod +x dstat_script.sh # chmod¸¦ + x´Â dstat_script.sh
# nohup ./dstat_script.sh & # nohup. / dstat_script.sh &
Done. Çß´Ù. Yes, it¡¯s that simple. ¿¹, ±×°Ç °£´Ü ÇØ¿ä. You will now be mailed this report after it¡¯s done running. ´ç½ÅÀÌ Áö±ÝÀÌ º¸°í¼¸¦ ½ÇÇà ¿Ï·á ÈÄ ¿ìÆí ¹ß¼ÛµË´Ï´Ù. You can optionally schedule this script as a daily cron job so that you can receive this data every day. ´ç½ÅÀº ¼±ÅÃÀÌ µ¥ÀÌÅ͸¦¹ÞÀ» ¼ö ÀÖµµ·Ï ´ç½ÅÀÌ ¸ÅÀÏ ¸ÅÀÏ cron ÀÛ¾÷À¸·ÎÀÌ ½ºÅ©¸³Æ®¸¦ ¿¹¾àÇÒ ¼öÀÖ½À´Ï´Ù.
As you may already have realized Dstat is a wonderful tool when applied to performance monitoring and debugging. ´ç½ÅÀÌ ÀÌ¹Ì °¡Áö°íÀÖ½À´Ï´Ù Dstat ±ú´Þ¾ÒÀ» ¶§ ÈǸ¢ÇÑ µµ±¸, ¼º´É ¸ð´ÏÅ͸µ ¹× µð¹ö±ë¿¡ Àû¿ëµË´Ï´Ù. The granularity, frequency, and nature of the data collected are completely up to you. ÀÌ ¼¼ºÐ, Á֯ļö, ±×¸®°í ¼öÁýµÈ µ¥ÀÌÅÍÀÇ ¼º°ÝÀÌ ¿ÏÀüÈ÷ ´ç½Å¿¡°Ô ´Þ·ÁÀÖ´Ù. Dstat empowers you to know what is going on on your server. ±ÍÇÏÀÇ ¼¹ö¿¡ Dstat ¹«½¼ ÀÏÀÌ ÀϾ°í ÀÖ´ÂÁö¿¡ ÈûÀ» ½Ç¾îÁÖ°íÀÖ½À´Ï´Ù. Used wisely this power can result in a lot less sleepless nights for you. Çö¸íÀÌ Àü·ÂÀ» ¸¹ÀÌ »ç¿ëÇÏ´Â ´ú ºÒ¸éÀÇ ¹ãÀ» ¹ß»ýÇÒ ¼öÀÖ½À´Ï´Ù.








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