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...din and stderr open Product: Portable OpenSSH Version: 8.2p1 Hardware: All OS: All Status: NEW Severity: normal Priority: P5 Component: ssh Assignee: unassigned-bugs at mindrot.org Reporter: ionic at ionic.de As a more general case of #1988, the -f flag also seems to keep stdin and stderr open in the general case: % ssh ionic.de -f -T 'pv -qL 1 /dev/zero' % ls -ldh /proc/7115/fd/* lrwx------ 1 ionic ionic 64 Mar 16 09:21 /proc/7115/fd/0 -> /dev/pts/50 l-wx------ 1 ionic ionic 64...

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 wil...

Hi, I need to rsync a remote live server to a local backup machine. The local backup machine is starting the rsync on scheduled basis (ie pulling from the remote) and I would like it to reduce the load on the remote live server by using nice/ionice at the far end. I'm connecting to the remote machine with ssh How can I get the remote server to be running it's part of the chain nice'd/ionice'd ? Thanks Ed W

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 th...

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

...qr] [-c ioprio_class -n ioprio_classdata] <path>|<device>\n" "Start a new scrub.", "\n-B do not background\n" "-d stats per device (-B only)\n" "-q quiet\n" "-r read only mode\n" + "-c set ioprio class (see ionice(1) manpage)\n" + "-n set ioprio classdata (see ionice(1) manpage)\n" }, { do_scrub_cancel, 1, "scrub cancel", "<path>|<device>\n" @@ -144,7 +147,8 @@ static struct Command commands[] = { NULL }, { do_scrub_resume, -1, - "scrub...

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...th holes and not with the sections of the files that contain data. We have seen extremely high IO load for example copying a 40 or 80gb sparse file that only has a few gigs of data in it. Attempts to lower the io priority and cpu priority of these processes do not make any measurable difference. (ionice, nice) This has been observed with processes such as: cp rsync sha1sum The server does have to be under some load to reproduce the necessary conditions. The cases we have seen involve servers running 10-30 guests under kvm. Load is in acceptable norms when the processes are run, such as load...

...h, int, who, int, ioprio); >> +_syscall2(int, ioprio_get, int, which, int, who); >After looking at all this, and realizing that the proper syscall definitions >don't exist anywhere on a modern distro, I'm begining to think that perhaps >we want to just fork and exec /usr/bin/ionice. >It seems more future maintainable than defining the syscall interface >ourselves. ok, I will replace syscall interface with exec ionice. >> + case HB_ACTION_IONICE: >> + err = adjust_priority(&hbo); >> + if (err) { >> + com_err(progname, err, "while a...

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

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! :\

...gt;|<device>", "Start a new scrub", "", "-B do not background", @@ -1517,6 +1521,8 @@ static const char * const cmd_scrub_start_usage[] = { "-R raw print mode, print full data instead of summary" "-c set ioprio class (see ionice(1) manpage)", "-n set ioprio classdata (see ionice(1) manpage)", + "-f force to skip checking whether scrub has started/resumed in userspace ", + " this is useful when scrub stats record file is damaged", NULL }; diff --git a/man/btrfs.8.in b...

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

...ages logcheck suggests: ii syslog-summary 1.14-2 summarize the contents of a syslog -- Configuration Files: /etc/cron.d/logcheck changed: PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root @reboot logcheck if [ -x /usr/sbin/logcheck ]; then ionice -c3 nice -n5 /usr/sbin/logcheck -R; fi 2 * * * * logcheck if [ -x /usr/sbin/logcheck ]; then ionice -c3 nice -n5 /usr/sbin/logcheck; fi /etc/logcheck/logcheck.conf [Errno 13] Permission denied: u'/etc/logcheck/logcheck.conf' /etc/logcheck/logcheck.logfiles [Errno 13] Permission d...

...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 {0..9};do nice -20 ionice -c3 touch ${i}{0..99999}&done' to create one million files. my script and command are as bellows: walkerxk at tp:~/test.d$ ./test.sh &>test.log walkerxk at tp:~/test.d$ grep . d[12].log d1.log:1.89user 28.20system 13:40.39elapsed 3%CPU (0avgtext+0avgdata 77632maxresident)k d1.log:...

...at> Subject: Re: R statical-script for analysis (India) To: "Nilesh Vaghela" <nilesh_spu25@yahoo.in> Cc: cran@r-project.org Date: Thursday, 29 July, 2010, 8:17 AM >>>>> Nilesh Vaghela writes: > Dear Sir,   I am doing research work on solution behavior of the ionic liquids by surface tension and conductivity measurements. We get some references  (see attachment) in which the data analysis of the were done by R  statical programme. We want to do same. But we do not know how to  write script for analysis of the data.Basically it is Philips equation for cmc dete...

...t sure what is the best in this case. Regarding disk, since it's LVM I've chosen to go to cache mode none and IO mode native. Also here cannot judge what's the best setup for the workload. I'm undecided to use IO mode threads along directsync cache mode. Finally I've set "ionice -c 1 -p <qemu-pid> -n 0" and "renice -n -10 <qemu-pid>" for the interested VM that I want to get best performance possible. Even with the above setup, the MSSQL VM has performance similar to the old machine running ESXi 5.5, so does anyone can suggest where too look at...

...riods 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 Centos 4.5 right now. I know Centos 5 includes ionice, more io scheduler/elevator selections like deadlock/etc. Perhaps that would fix this issue. We're running the latest PERC firmware. The specific issue I'm referring to at this point is on a system running mysql. All mysql data files are on a netapp filer but mysql's tmp directory is...

hi all I have something like 3000 log files in a directory (from data collection). At 4am in the morning cron runs a script of mine that essentiallly trims all files in that directory back to a certain size. Basically does a "tail -c XXXX filename > tmp_filename" I have noticed that only around the 4am-4:15 time frame when the trim is happening does my other process log connection