RDN Posted September 23, 2005 Share Posted September 23, 2005 Are we getting too popular, George? Link to comment Share on other sites More sharing options...
britmaveric Posted September 23, 2005 Share Posted September 23, 2005 Yeah I got that earlier too - Link to comment Share on other sites More sharing options...
george Posted September 23, 2005 Share Posted September 23, 2005 Yes, very high traffic. I have now set maximum users a bit higher Link to comment Share on other sites More sharing options...
davethailand Posted September 23, 2005 Share Posted September 23, 2005 Yes, very high traffic. I have now set maximum users a bit higher <{POST_SNAPBACK}> Great reason though, a George Too many users Link to comment Share on other sites More sharing options...
britmaveric Posted September 23, 2005 Share Posted September 23, 2005 (edited) Yes, very high traffic. I have now set maximum users a bit higher <{POST_SNAPBACK}> Great reason though, a George Too many users <{POST_SNAPBACK}> I dont think George is unhappy at all!!!! Hmmmm the massage parlour closures causing this? Edited September 23, 2005 by britmaveric Link to comment Share on other sites More sharing options...
george Posted September 23, 2005 Share Posted September 23, 2005 Yes, would rather be there for a soapie. I am not only forum addict, a soapie addict too. Link to comment Share on other sites More sharing options...
RDN Posted September 24, 2005 Author Share Posted September 24, 2005 Here we go again: Link to comment Share on other sites More sharing options...
Mr. Farang Posted September 25, 2005 Share Posted September 25, 2005 Dear George, Are you running MySQL on Linux or a variety of MS? Is the forum software running on the same server as MySQL? The reason I asked is that I admin a fairly busy vBulletin-MySQL technical forum that runs (together) on Linux and we don't get these 'MySQL connect limit' errors. Yours sincerely, Mr. Farang Link to comment Share on other sites More sharing options...
george Posted September 25, 2005 Share Posted September 25, 2005 We are running Linux on a dedictated fat machine, MySQL database runs on the same machine. We are having some trouble when the nightly backup starts/ends and the Cpanel is upgraded nightly. Our uptime is over 99%, http://www.thaivisa.net/ so we are talking downtime a few minutes per night. I wish I had a solution to this, maybe you have? Link to comment Share on other sites More sharing options...
Mr. Farang Posted September 25, 2005 Share Posted September 25, 2005 We are running Linux on a dedictated fat machine, MySQL database runs on the same machine. We are having some trouble when the nightly backup starts/ends and the Cpanel is upgraded nightly. Our uptime is over 99%, http://www.thaivisa.net/ so we are talking downtime a few minutes per night. I wish I had a solution to this, maybe you have? <{POST_SNAPBACK}> Dear Khun George, Without having visability into the process table and load average, my first suggestion would be to try to "nice" the backup task (command) to a lower scheduling priority: NICE(1) FSF NICE(1)NAME nice - run a program with modified scheduling priority SYNOPSIS nice [OPTION]... [COMMAND [ARG]...] DESCRIPTION Run COMMAND with an adjusted scheduling priority. With no COMMAND, print the current scheduling priority. ADJUST is 10 by default. Range goes from -20 (highest priority) to 19 (lowest). -ADJUST increment priority by ADJUST first -n, --adjustment=ADJUST same as -ADJUST --help display this help and exit --version output version information and exit Link to comment Share on other sites More sharing options...
george Posted September 25, 2005 Share Posted September 25, 2005 We are running incremental backup, so I believe it's very nicely. I will forward your advise to our hostmaster. Further suggestions welcomed!Cheers! Link to comment Share on other sites More sharing options...
Mr. Farang Posted September 25, 2005 Share Posted September 25, 2005 (edited) We are running incremental backup, so I believe it's very nicely. I will forward your advise to our hostmaster. Further suggestions welcomed!Cheers! <{POST_SNAPBACK}> Dear George, Even incremental backups can use a lot of CPU, so let's say the incremental command was: /usr/local/bin/inc_backup Then this command would lower the scheduling priority of the backup: nice -n 19 /usr/local/bin/inc_backup And when MySQL is executed, it can be make to run at a higher scheduling priority: nice -n -20 /usr/local/mysql/bin/safe_mysql (for example) Please post the output of the command: cat /proc/cpuinfo and also: cat /proc/meminfo (during the backup, preferably) Yours sincerely, Mr. Farang Edited September 25, 2005 by Mr. Farang Link to comment Share on other sites More sharing options...
george Posted September 25, 2005 Share Posted September 25, 2005 cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.40GHz stepping : 5 cpu MHz : 2400.167 cache size : 512 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 4784.12 processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.40GHz stepping : 5 cpu MHz : 2400.167 cache size : 512 KB physical id : 0 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 4797.23 processor : 2 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.40GHz stepping : 5 cpu MHz : 2400.167 cache size : 512 KB physical id : 3 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 4797.23 processor : 3 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.40GHz stepping : 5 cpu MHz : 2400.167 cache size : 512 KB physical id : 3 siblings : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 4797.23 Link to comment Share on other sites More sharing options...
george Posted September 25, 2005 Share Posted September 25, 2005 cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 2113945600 2064744448 49201152 0 274599936 1398931456 Swap: 1077501952 158281728 919220224 MemTotal: 2064400 kB MemFree: 48048 kB MemShared: 0 kB Buffers: 268164 kB Cached: 1257104 kB SwapCached: 109040 kB Active: 1509120 kB ActiveAnon: 317808 kB ActiveCache: 1191312 kB Inact_dirty: 40 kB Inact_laundry: 300504 kB Inact_clean: 35840 kB Inact_target: 369100 kB HighTotal: 1179584 kB HighFree: 19984 kB LowTotal: 884816 kB LowFree: 28064 kB SwapTotal: 1052248 kB SwapFree: 897676 kB -jailshell-2.05b$ cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 2113945600 2064744448 49201152 0 274599936 1398931456 Swap: 1077501952 158281728 919220224 total: used: free: shared: buffers: cached: Mem: 2113945600 2044329984 69615616 0 274677760 1398939648 Swap: 1077501952 158281728 919220224 MemTotal: 2064400 kB MemFree: 67984 kB MemShared: 0 kB Buffers: 268240 kB Cached: 1257112 kB SwapCached: 109040 kB Active: 1485676 kB ActiveAnon: 294284 kB ActiveCache: 1191392 kB Inact_dirty: 24 kB Inact_laundry: 300500 kB Inact_clean: 35864 kB Inact_target: 364412 kB HighTotal: 1179584 kB HighFree: 39864 kB LowTotal: 884816 kB LowFree: 28120 kB SwapTotal: 1052248 kB SwapFree: 897676 kB -jailshell-2.05b$ total: used: free: shared: buffers: cached: -jailshell: total:: command not found -jailshell-2.05b$ Mem: 2113945600 2064744448 49201152 0 274599936 1398931456 -jailshell: Mem:: command not found -jailshell-2.05b$ Swap: 1077501952 158281728 919220224 -jailshell: Swap:: command not found -jailshell-2.05b$ MemTotal: 2064400 kB -jailshell: MemTotal:: command not found -jailshell-2.05b$ MemFree: 48048 kB -jailshell: MemFree:: command not found -jailshell-2.05b$ MemShared: 0 kB -jailshell: MemShared:: command not found -jailshell-2.05b$ Buffers: 268164 kB -jailshell: Buffers:: command not found -jailshell-2.05b$ Cached: 1257104 kB -jailshell: Cached:: command not found -jailshell-2.05b$ SwapCached: 109040 kB -jailshell: SwapCached:: command not found -jailshell-2.05b$ Active: 1509120 kB -jailshell: Active:: command not found -jailshell-2.05b$ ActiveAnon: 317808 kB -jailshell: ActiveAnon:: command not found -jailshell-2.05b$ ActiveCache: 1191312 kB -jailshell: ActiveCache:: command not found -jailshell-2.05b$ Inact_dirty: 40 kB -jailshell: Inact_dirty:: command not found -jailshell-2.05b$ Inact_laundry: 300504 kB -jailshell: Inact_laundry:: command not found -jailshell-2.05b$ Inact_clean: 35840 kB -jailshell: Inact_clean:: command not found -jailshell-2.05b$ Inact_target: 369100 kB -jailshell: Inact_target:: command not found -jailshell-2.05b$ HighTotal: 1179584 kB -jailshell: HighTotal:: command not found -jailshell-2.05b$ HighFree: 19984 kB -jailshell: HighFree:: command not found -jailshell-2.05b$ LowTotal: 884816 kB -jailshell: LowTotal:: command not found -jailshell-2.05b$ LowFree: 28064 kB -jailshell: LowFree:: command not found -jailshell-2.05b$ SwapTotal: 1052248 kB -jailshell: SwapTotal:: command not found -jailshell-2.05b$ SwapFree: 897676 kB -jailshell: SwapFree:: command not found -jailshell-2.05b$ Link to comment Share on other sites More sharing options...
Mr. Farang Posted September 25, 2005 Share Posted September 25, 2005 Dear George, Thanks. (Starting to take a look for clues). OBTW: MySQL has a "nice option" built into the command line now: --nice=priority Use the nice program to set the server's scheduling priority to the given value. This option was added in MySQL 4.0.14. MySQL Reference More later. Cheers! Yours sincerely, Mr. Farang Link to comment Share on other sites More sharing options...
Mr. Farang Posted September 25, 2005 Share Posted September 25, 2005 Swap: 1077501952 158281728 919220224 Dear George, If the scheduling priority of MySQL is not higher than the rest of the processes in the process table, it is possible during heavy loads (like backups) that MySQL processes could start to swap into that 158MB of swap space that is being used. If MySQL processes are swapping in-and-out, that is likely the source of the problem. I would try making MySQL the highest possible scheduling priority and make the backup process the lowest possible scheduling priority, as the first thing to try - or simply add the -nice option to the MySQL command line per the mysqld man page (first, before lowering the priority of the backup command). Yours sincerely, Mr. Farang Link to comment Share on other sites More sharing options...
Mr. Farang Posted September 25, 2005 Share Posted September 25, 2005 Dear Khun George, Another thing to check is to look at the process table using "ps" when having the MySQL connection problems and look at the STAT column of the process table output as well as the scheduling priority of all the processes. Yours sincerely, Mr. Farang Link to comment Share on other sites More sharing options...
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