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• Reading Partition Start and End in TestDisk

  - by neanderslob

  I'm using TestDisk in an attempt to recover a partition gone terribly awry. Identifying the partition in question should simply be a matter of simply recognizing the location in the disk that it occupies. Since I know the location of the partition in question from GParted, I need to translate that over to the format that TestDisk uses, which I can't quite figure out. GParted gives the First and Last sectors as follows: First Sector: 1708032 Last Sector: 54637719 Total sector: 52929688 Test Disk gives the partitions in the following way: Start: 1691 110 20 End: 4986 39 5 Size in Sectors: 52929688 My question is: how do I translate the location specified in GParted to that in TestDisk? See the following image for any contextual clarification you might need:

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• How much free memory should I have on my webserver?

  - by neanderslob

  I have a webserver that's currently hosting two Wordpress sites and some java-based collaboration software. The server has 2G of memory and is currently using about 1.8G of the available memory. Right now what's on here is pretty much a pilot project that's getting negligible traffic so I think it's pretty clear that I'll be needing more memory. I was wondering, if I was to release it, how I might anticipate my memory needs based on the traffic it gets. I've poked around on Google and what I've found has been a bit tenuous. Is there a good heuristic that one should use when calculating memory demands as a function of the base (no traffic) load on the server? For reference, the output of free -m can be seen below: total used free shared buffers cached Mem: 2048 1832 215 0 0 0 -/+ buffers/cache: 1832 215 Swap: 0 0 0 To me this looks like actual memory used and isn't an illusion due to caching or anything else. I figure the demands of my collaboration software will have to be experimentally tested so here's free -m without that software running: total used free shared buffers cached Mem: 2048 1109 938 0 0 0 -/+ buffers/cache: 1109 938 Swap: 0 0 0 My plan B to figure this out is to add a bunch of swap space to the server, give it some traffic and adjust according the the amount that swap gets used. I was just wondering if anyone had a good rule of thumb to estimate how much memory I should plan on in advance...or if what I'm thinking is nuts. Many thanks in advance (I'm really quite new to this).

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