search for: slabtop

I have a 2 node cluster of HP DL380G4s. These machines are attached via scsi to an external HP disk enclosure. They run 32bit RH AS 4.0 and OCFS 1.2.4, the latest release. They were upgraded from 1.2.3 only a few days after 1.2.4 was released. I had reported on the mailing list that my developers were happy, and things seemed faster. However, twice in that time, the cluster has gone down due

...inux-4.15 as of a few minutes ago), and there appears to be a memory leak with nouveau that eats up about .5 GB every day. Killing X does nothing. Attached is output of dmesg from the most recent boot of this machine. I've also attached (in case it matters) dumps of /proc/meminfo and output of slabtop after I ran X for about two weeks, then exited and killed all major daemons. More importantly, I've attached a few hundred lines of /sys/kernel/debug/kmemleak (from the most recent boot). After the first few entries, they all start looking the same (except for the address and age). -- You ar...

Hi, I regularly have errors (kernel: dst cache overflow) and crash of a firewall under Linux 2.6.17 and the route patch from Julian Anastasov. With rtstat I see that the route cache size increases regularly without never decreasing. I have this parameters: fw:/proc/sys/net/ipv4/route# grep . * error_burst:1250 error_cost:250 gc_elasticity:15 gc_interval:60 gc_min_interval:0

Current kernel, and I just booted, and dmesg shows, of the 32 cores, 0, 2, 4 and 6 ok, and *all* other show "is now offline. What's happening here? mark

...9;s happening here? > A followup: I also find a core in /var/spool/abrt, and "reason" is kernel BUG at mm/slub.c:3601! In googling, I see threads about incorrect calculation of slabs. Following one thread, I find cat /sys/kernel/slab/:t-0000048/cpu_slabs gives me 4 N0=4 Meanwhile, slabtop shows Active / Total Slabs (% used) : 25927 / 25927 (100.0%) Which changes, but just varying around that number, and st 100%. So: should I increase the number of slabs, using the kernel parm of swiotlb, and if so, for what I show above, should I set it to, say, 32000? mark

Hello, First of all thanks a lot for working on this free nvidia driver. 1.) I am using Fedora9-Beta, and on my NV17/64mb (or NV18?) powered Laptop the nouveau driver uses about 300mb RAM. Is there any way I can decrease that? 2.) Font rendering is very slow. running "x11perf --aa10text" I only get 40k glyphs/s. Is there any way I can improve text performance? 3.) I would like to

Hi 2 all ! I have problems with concurrent filesystem actions on a ocfs2 filesystem which is mounted by 2 nodes. OS=RH5ES and OCFS2=1.2.6 F.e.: If I have a LV called testlv which is mounted on /mnt on both servers and I do a "dd if=/dev/zero of=/mnt/test.a bs=1024 count=1000000" on server 1 and do at the same time a du -hs /mnt/test.a it takes about 5 seconds for du -hs to execute: 270M

Article by Jeff Layton: http://www.linux-mag.com/id/7839 anyone have views on whether this sort of caching would be useful for the MDT? My feeling is that MDT reads are probably pretty random but writes might benefit...? GREG -- Greg Matthews 01235 778658 Senior Computer Systems Administrator Diamond Light Source, Oxfordshire, UK

Hi Y'all, I'm seeing some interesting behavior that I was hoping someone could shed some light on. Basically I'm trying to rsync a lot of files, in a series of about 60 rsyncs, from one server to another. There are about 160 million files. I'm running 3 rsyncs concurrently to increase the speed, and as each one finishes, another starts, until all 60 are done. The machine

Hello again, when the iozone writes slow. This is how slabtop looks like: 62476752 62476728 0% 0.10K 1601968 39 6407872K buffer_head 1000678 999168 0% 0.56K 142954 7 571816K radix_tree_node 132184 125911 0% 0.03K 1066 124 4264K kmalloc-32 118496 118224 0% 0.12K 3703 32 14812K kmalloc-node 73206 5...

I am a rank newbie to Linux and wine. I am running Ubuntu Dapper on an AMD 1800 mhz machine, wine 0.9.15 Everything I have read says use the installer to load windows programs. Where is the installer? Thanks, -- Ron Thompson On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA http://www.plansandprojects.com My hobby pages are here:

Hello, I have cluster with AMD EPYC 7351 cpu. Two CPUs per node. I have performance 8-NUMA configuration: This is from hypervizor: [root@hde10 ~]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 64 On-line CPU(s) list: 0-63 Thread(s) per core: 2 Core(s) per socket: 16 Socket(s): 2 NUMA

We have just discovered that a large buffer cache generated from traversing a lustre file system will cause a significant system overhead for applications with high memory demands. We have seen a 50% slowdown or worse for applications. Even High Performance Linpack, that have no file IO whatsoever is affected. The only remedy seems to be to empty the buffer cache from memory by running