Well the internet link here is 100mbps, i think the workload will be a bit more than only 100 users, it's a second webserver+database server He is trying to use a cheaper server with more disk performace, Brazil costs are too high to allow a full ssd system or 15k rpm sas harddisks For mariadb server i'm studing if the thread-pool scheduler will be used instead of one thread per connection but "it's not my problem" the final user will select what is better for database scheduler In other words i think the work load will not be a simple web server cms/blog, i don't know yet how it will work, it's a black/gray box to me, today he have sata enterprise hdd 7200rpm at servers (dell server r420 if i'm not wrong) and is studing if a ssd could help, that's my 'job' (hobby) in this task 2013/9/18 Drew <drew.kay@xxxxxxxxx>: > On Wed, Sep 18, 2013 at 8:51 AM, Roberto Spadim <roberto@xxxxxxxxxxxxx> wrote: >> Sorry guys, this time i don't have a full knowledge about the >> workload, but from what he told me, he want fast writes with hdd but i >> could check if small ssd devices could help >> After install linux with raid1 i will install apache mariadb and php >> at this machine, in other words it's a database and web server load, >> but i don't know what size of app and database will run yet >> >> Btw, ssd with bcache or dm cache could help hdd (this must be >> enterprise level) writes, right? >> Any idea what the best method to test what kernel drive could give >> superior performace? I'm thinking about install the bcache, and after >> make a backup and install dm cache and check what's better, any other >> idea? > > We still need to know what size datasets are going to be used. And > also given it's a webserver, how big of a pipe does he have? > > Given a typical webserver in a colo w/ 10Mbps pipe, I think the > suggested config is overkill. For a webserver the 7200 SATA's should > be able to deliver enough data to keep apache happy. > > In the database side, depends on how intensive the workload is. I see > a lot of webservers where the 7200's are just fine because the I/O > demands from the database are low. Blog/CMS systems like wordpress > will be harder on the database but again it depends on how heavy the > access is to the server. How many visitors/hour does he expect to > serve? > > > -- > Drew > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Roberto Spadim -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
