Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2019-03-23 Thread Jeff Mahoney
On 3/23/19 11:56 AM, Eric W. Biederman wrote: > Jeff Mahoney writes: > >> On 4/24/18 10:14 AM, Eric W. Biederman wrote: >>> je...@suse.com writes: >>> From: Jeff Mahoney Hi all - I recently encountered a customer issue where, on a machine with many TiB of memory

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2019-03-23 Thread Eric W. Biederman
Jeff Mahoney writes: > On 4/24/18 10:14 AM, Eric W. Biederman wrote: >> je...@suse.com writes: >> >>> From: Jeff Mahoney >>> >>> Hi all - >>> >>> I recently encountered a customer issue where, on a machine with many TiB >>> of memory and a few hundred cores, after a task with a few thousand

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2019-03-21 Thread Jeff Mahoney
On 4/24/18 10:14 AM, Eric W. Biederman wrote: > je...@suse.com writes: > >> From: Jeff Mahoney >> >> Hi all - >> >> I recently encountered a customer issue where, on a machine with many TiB >> of memory and a few hundred cores, after a task with a few thousand threads >> and hundreds of files

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-26 Thread Jeff Mahoney
On 4/24/18 10:14 AM, Eric W. Biederman wrote: > je...@suse.com writes: > >> From: Jeff Mahoney >> >> Hi all - >> >> I recently encountered a customer issue where, on a machine with many TiB >> of memory and a few hundred cores, after a task with a few thousand threads >> and

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-26 Thread Jeff Mahoney
On 4/24/18 10:14 AM, Eric W. Biederman wrote: > je...@suse.com writes: > >> From: Jeff Mahoney >> >> Hi all - >> >> I recently encountered a customer issue where, on a machine with many TiB >> of memory and a few hundred cores, after a task with a few thousand threads >> and hundreds of files

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-25 Thread Jeff Mahoney
On 4/24/18 2:17 AM, Alexey Dobriyan wrote: > On Mon, Apr 23, 2018 at 10:21:01PM -0400, je...@suse.com wrote: >> Memory pressure isn't really an issue on this machine, so we >> end up using well over 100GB for proc files. > > Text files at scale! > >> With these patches applied, running the same

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-25 Thread Jeff Mahoney
On 4/24/18 2:17 AM, Alexey Dobriyan wrote: > On Mon, Apr 23, 2018 at 10:21:01PM -0400, je...@suse.com wrote: >> Memory pressure isn't really an issue on this machine, so we >> end up using well over 100GB for proc files. > > Text files at scale! > >> With these patches applied, running the same

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-24 Thread Eric W. Biederman
je...@suse.com writes: > From: Jeff Mahoney > > Hi all - > > I recently encountered a customer issue where, on a machine with many TiB > of memory and a few hundred cores, after a task with a few thousand threads > and hundreds of files open exited, the system would softlockup.

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-24 Thread Eric W. Biederman
je...@suse.com writes: > From: Jeff Mahoney > > Hi all - > > I recently encountered a customer issue where, on a machine with many TiB > of memory and a few hundred cores, after a task with a few thousand threads > and hundreds of files open exited, the system would softlockup. That > issue was

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-24 Thread Alexey Dobriyan
On Mon, Apr 23, 2018 at 10:21:01PM -0400, je...@suse.com wrote: > Memory pressure isn't really an issue on this machine, so we > end up using well over 100GB for proc files. Text files at scale! > With these patches applied, running the same testcase, the proc_inode > cache only gets to about

Re: [RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-24 Thread Alexey Dobriyan
On Mon, Apr 23, 2018 at 10:21:01PM -0400, je...@suse.com wrote: > Memory pressure isn't really an issue on this machine, so we > end up using well over 100GB for proc files. Text files at scale! > With these patches applied, running the same testcase, the proc_inode > cache only gets to about

[RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-23 Thread jeffm
From: Jeff Mahoney Hi all - I recently encountered a customer issue where, on a machine with many TiB of memory and a few hundred cores, after a task with a few thousand threads and hundreds of files open exited, the system would softlockup. That issue was (is still) being

[RFC] [PATCH 0/5] procfs: reduce duplication by using symlinks

2018-04-23 Thread jeffm
From: Jeff Mahoney Hi all - I recently encountered a customer issue where, on a machine with many TiB of memory and a few hundred cores, after a task with a few thousand threads and hundreds of files open exited, the system would softlockup. That issue was (is still) being addressed by Nik