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monitor IO to tmpfs partition?

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http://serverfault.com – How can I monitor the write speed to a tmpfs partition. It does not appear in the output of vmstat or iostat. I am running several python processes that are writing heavily to tmpfs and contributing to load. The load is high but the CPU, memory, disk IO, etc is all nominal. The load seems to be taking this heavy tmpfs IO into account indirectly somehow. I'd love to know the write speed to have an idea of upper limits per host. I'm running blind any help would be appreciated. (HowTos)

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Submitted by xskl on 03/06/2012 – Made popular on 03/06/2012

Stories similar to monitor IO to tmpfs partition?

I have a headless Fedora 15 (without GUI) box.

Tmpfs only with RAM 31 weeks 6 days ago

How to be sure that a tmpfs filesystem can only deal with physical and it's not using a swap partition on disk ?

Since i have a slow HDD and a fast RAM i would like, at least, giving higher priority to the RAM usage for swap and tmpfs or disabling the disk usage for tmpfs related mount points.

Thanks.

tmpfs questions 11 weeks 2 days ago

I'm going to be putting Fedora 18 on a desktop w/ 32GB of memory.

One of many things it will be used for is building packages.

What I'm kind of thinking of doing is setting up a tmpfs filesystem with 10GB of capacity for mock so that very little disk IO is needed for building packages.

My understanding is that the way tmpfs works is different than a traditional ram disk.

hello dear stackfans

i wanted to check the space that i have on the machine: i tried it with this command

df -h

linux-wyee:~ # df -h Filesystem Size Used Avail Use% Mounted on rootfs 20G 6.9G 12G 37% / devtmpfs 1.9G 8.0K 1.9G 1% /dev tmpfs 1.9G 604K 1.9G 1% /dev/shm tmpfs 1.9G 692K 1.9G 1% /run /dev/sda13 20G 6.9G 12G 37% /

I have Linux server and I have a spare 500GB disk partition. I wanted to format it and use it for /tmp. The server occasionally runs some large data processing tasks so it can happen that /tmp will hold GBs of temporary data.

Then I got an idea that instead I could add it as a swap partition instead and mount /tmp to tmpfs.

/dev/sda8 on /tmp type tmpfs 23 weeks 4 days ago

I just went into fstab (Linux) and changed my line for /tmp (on which a specific ext4 partition was previously mounted) to tmpfs. This was clearly a bit silly, but I wasn't thinking. Anyway, I rebooted, and everything is working and all, but I'm confused.

What does it mean that /dev/sda8 is mounted as tmpfs?

Hi,did you check if you are running out of memory? This may happen because if you're using the tmpfs more RAM would be needed and maybe pages obtained by wine are going to be swapped ...However I don't know if there is an other swapping policy for RAM-pages consumed by tmpfs.regards, gux

gnux83 https://bbs.archlinux.org/profile.php?id=60672

2013-02-02T10:08:32Z

I'm trying to figure out how the paritioning works, so I'll know which partition I can format or create for data, and which I should format to reinstall linux.

Using "df -hT" I got this:

Filesystem Type Size Used Avail Use% Mounted on /dev/sda2 ext3 15G 4.4G 9.1G 33% / /dev/sda1 ext3 996M 40M 905M 5% /boot tmpfs tmpfs 2.0G 0 2.0G 0% /dev/shm

I w

I have installed ubuntu server on flash and have done a few things to minimise writes to disk. One of the things I have done is to direct a number of directories to ram via tmpfs.