similar to: How to use ionice?

Hey, anyone has some successful experience with ionice? I tried it with 'idle' (-c 3) parameter. When I did a quick test (find /), it seemed to work with frequent pauses (I guess waiting for idle). But when I used it on my big tar, it made it worse than without... which seems counter-intuitive. Thx, JD

Hi Everyone, I''m experimenting with ionice, and I have to say at first impressions I''m very impressed! Does anyone have any idea how I could script the ionice config? I''m using phy for my DomUs so everything appears in ps as blkback.<DOMID>.xvda1 The problem is, is that the process id for the blkback process will change after every DomU restart,

Hi Everyone, When you want to use ionice to limit the amount of disk a DomU has, due to have to run ionice on every blkback process? Incidently, what is the format of the blkback process? I see the following in ps aux: blkback.xx.xvda blkback.xx.xvda1 blkback.xx.xvd where xx appears to be the domain ID. I''m curious as to the last few letters mean? Thanks

Dear List, We have noticed a variety of reproducible conditions working with sparse files on multiple servers under load with CentOS 6.4. The short story is that processes that read / write sparse files with large "holes" can generate an IO storm. Oddly, this only happens with holes and not with the sections of the files that contain data. We have seen extremely high IO load for

How can I slow down dd? I don't want to slow down the pc, when generating a big file [~40 GByte]. Does ionice work properly? Thank you for any help! :\

Hi Everyone, I''m using phy: to give LVM LVs to my DomUs. I''d like to do some schduling with the disks so that one VM will not lock up the others ones. Does anybody know how to integrate this into the config file? Thanks _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Package: logcheck Version: 1.2.69 Severity: normal logcheck is a "batchy" job, but currently runs at normal I/O priority, and is hard-coded to run with a niceness of 10. As a result logcheck can degrade interactive performance on machines with a lot of log traffic, relatively slow CPU or expensive I/O. It'd be useful if the "ionice" and "schedtool" utilities

Hello, I found a strange problem with allocationg big files on drive. For example in guestfish I allocate large disk image for example: $ guestfish ><fs> allocate test.img 20G When an image allocating, there is a big slowdown of guest OSes, launched on host machine, and on different drives. For Linux guests with virtio drivers, there is no so big performance penalty, but for FreeBSD

Hello, I found a strange problem with allocationg big files on drive. For example in guestfish I allocate large disk image for example: $ guestfish ><fs> allocate test.img 20G When an image allocating, there is a big slowdown of guest OSes, launched on host machine, and on different drives. For Linux guests with virtio drivers, there is no so big performance penalty, but for FreeBSD

Hi There, I've moved some Windows2012 with MSSQL VMs from an hold ESXi 5.5 machine to a more recent and powerful machine running Fedora 24 x86_64 and related libvirt + KVM virtualization. I've moved the VMs filesystem to LVM slices and installed the VirtIO drivers in to all Windows VMs. I've also set both Disk and Network interface to work using VirtIO. So far so good everything works

I have a script that normally runs my snapshot that I haven't used for the past several days because something seemed to be going wrong and I wanted to run things manually. But running the script twice today, I got: > snaphome Found 15 mounted dated, snaps or snap archives ?[snapper#2120]base_mp=/home 1 snap dated today. (Use: '--force=force_create_snap' to force another snap.)

Hello everyone. I'm wondering what other people's experiences are WRT systems becoming unresponsive (unable to ssh in, etc) for brief periods of time when a large amount of IO is being performed. It's really starting to cause a problem for us. We're on Dell PowerEdge 1955 blades - but this same issue has caused us problems on PE1950, PE1850, PE1750 servers. We're running

The btrfs tool is changed in order to support command line parameters to configure the IO priority of the scrub tasks. Also the default is changed. The default IO priority for scrub is the idle class now. Some basic performance measurements have been done with the goal to measure which IO priority for scrub gives the best overall disk data throughput. The kernel was configured to use the CFQ IO

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Is there a way to nice the IO on a process such as dd? If not, what could be a way to control the IO level of such a process from bogging down a server to severely. Thanks, jlc

hi, Mark: zhen wei zwei@novell.com +86 10 65339225 >>> Mark Fasheh <mark.fasheh@oracle.com> 06?12?08? ?? 8:20 >>> >> +errcode_t o2cb_get_hb_thread_pid (const char *cluster_name, const char *region_name, >> + pid_t *pid) >> +{ >> + char attr_path[PATH_MAX]; >> + char _fake_cluster_name[NAME_MAX]; >> + char attr_value[16]; >> +

I hit a problem that i can not start scrub when i am trying to track superblock generation mismatch problems. The fact is that we are trying to check whether we have started a scrub operation in userspace, this will make us can''t start scrub if that record file is damaged itself. By adding a option to skip that check, everything will be fine. Signed-off-by: Wang Shilong

Hello - frequently I turn on my external USB 3.0 disk and back. While my machine is copying and backing up my desktop becomes very sluggish. Is there a way to change that ? I am using CentOS 7.5 x86 with a very nice processor extra cores available and plenty of memory. There is no reason the "other" cores cannot keep the desktop going. Thanks, Jerry

Package: logcheck Version: 1.3.13 Severity: normal Hi, at present my logcheck is into 33 minutes of cpu time for running the ignore/innd rule, when the innd package is not installed. If running logcheck against only locally created logfiles, there should be a configuration option to only run logcheck against installed (or non-purged) packages. -- System Information: Debian Release: squeeze/sid

i found two article said that rsync -a --delete empty/ a1/ will much more faster than rm when deleting millions files: http://linuxnote.net/jianingy/en/linux/a-fast-way-to-remove-huge-number-of-files.html http://www.quora.com/File-Systems/How-can-someone-rapidly-delete-400-000-files but my test gets opposite result, and i think it's impossible on theory. i use the command 'for i in