search for: memstats

Hey all - Just a quick one... Is there any plan to update the mdb ::memstat dcmd to present ZFS buffers as part of the summary? At present, we get something like: > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 28859 112 13% Anon 34230

Can someone, more learned in the ways of dtrace point me at what to look at to help understand why the kernel on one machine is using tons of memory, while another machine doing the same task/same user load is not. swapinfo for the "afflicted" machine shows RAM _______Total 16384 Mb RAM Unusable 73 Mb RAM Kernel 9226 Mb RAM Locked 2 Mb RAM Used

Hello all, I have a question. Below are two ::memstat outputs about 5 days apart. The interesting thing is the "anonymous" memory shows 2GB, though the two major hogs of that memory (two MySQL instances) claim to be consuming about 6.2GB (checked via pmap). Also, it seems like the ARC keeps creeping the kernel memory over the 4GB limit I set for the ARC (zfs_arc_max). What I was also,

Hi there, i am trying to understand something that bothering me for some time now. A running domain has two things that someone needs to take backup. So there is the disk and the state. Using snapshots as checkpoint someone can take the disk snapshot but i cant understand how to "transfer" the saved state from "backup ed" disk. Reading through Kashyap's and Eric's

I currently use following approach but its failing Find Max memory using following API         vdgiRet = virDomainGetInfo(domPtr, infoPtr);         memTotal = infoPtr->memory; Find current utilization using following API                 rVal = virDomainMemoryStats (domPtr, memStats, VIR_DOMAIN_MEMORY_STAT_NR, 0) ;         for (i = 0; i < rVal; i++)         {             if (memStats[i].tag == 7)                 memUsed = memStats[i].val;         } Which is the value of "VIR_DOMAIN_MEMORY_STAT_RSS    =    7" Then I calculate util as (memUsed/memTotal) But th...

Hello. I have a Solaris 11/11 x86 box (which I migrated from SolEx 11/10 a couple of weeks ago). Without no obvious reason (at least for me), after an uptime of 1 to 2 days (observed 3 times now) Solaris sets arc_no_grow to 1 and then never sets it back to 0. ARC is being shrunk to less than 1 GB -- needless to say that performance is terrible. There is not much load on this system. Memory

I am trying to see how ZFS behaves under resource starvation - corner cases in embedded environments. I see some very strange behavior. Any help/explanation would really be appreciated. My current setup is : OpenSolaris 111b (iSCSI seems to be broken in 132 - unable to get multiple connections/mutlipathing) iSCSI Storage Array that is capable of 20 MB/s random writes @ 4k and 70 MB random reads

We have a 32 GB RAM server running about 14 zones. There are multiple databases, application servers, web servers, and ftp servers running in the various zones. I understand that using ZFS will increase kernel memory usage, however I am a bit concerned at this point. root at servername:~/zonecfg #mdb -k Loading modules: [ unix krtld genunix specfs dtrace uppc pcplusmp ufs md mpt ip indmux ptm

Hello, ZFS is behaving strange on a OSOL laptop, your thoughts are welcome. I am running OSOL on my laptop, currently b124 and i found that the performance of ZFS is not optimal in all situations. If i check the how much space the package cache for pkg(1) uses, it takes a bit longer on this host than on comparable machine to which i transferred all the data. user at host:/var/pkg$ time

I would appreciate if somebody can clarify a few points. I am doing some random WRITES (100% writes, 100% random) testing and observe that ARC grows way beyond the "hard" limit during the test. The hard limit is set 512 MB via /etc/system and I see the size going up to 1 GB - how come is it happening? mdb''s ::memstat reports 1.5 GB used - does this include ARC as well or is

HI, T5220, S10U4 + patches mdb -k > ::memstat While above is working (takes some time, ideally ::memstat -n 4 to use 4 threads could be useful) mpstat 1 shows: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 48 0 0 1922112 9 0 0 8 0 0 0 15254 6 94 0 0 So about 2mln xcalls per second. Let''s check with dtrace:

We have a serious performance problem on our server. Here is some data: <pre> > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 1133252 4426 31% Anon 1956988 7644 53% Exec and libs 31104 121 1% Page cache

Hello. We''re currently using a Sun Blade1000 (2x750MHz, 1G ram, 2x160MB/s mpt scsi buses, skge GigE network) as a NFS backend with ZFS for distribution of free software like Debian (cdimage.debian.org, ftp.se.debian.org) and have run into some performance issues. We are running SX snv_48 and have run with a raidz2 with 7x300G for a while now, just added another 7x300G raidz2 today but

> > Offlist/OT - Sheer guess, straight out of my parts - maybe a cronjob to > rebuild the locate db or something similar is hammering it once a week? In the problem condition, there appears to be very little going on on the system. eg., root at server5:/tmp# /usr/local/bin/top last pid: 3828; load avg: 4.29, 3.95, 3.84; up 6+23:11:4407:12:47 79 processes: 78 sleeping, 1 on

Hi, Can I use DTrace to determine memory status? 1.Total Physical Memory, Used Memory. 2.Total Swap Space and Used Swap Space. I did find few DTrace scripts but had too much in them and I am unable to chop off unwanted lines of code due to lack of knowledge. It will be very helpful if some one can share the piece of code that serves my purpose as mentioned above. Regards, Ramesh. Ramesh

Hey :) I have recently set up VPN links between 3 subnets. I can ping back and forth between all of the computers just fine, and samba works on all but one subnet. The problem is that I am unable to use the VPN to browse computers on the office network. I can browse them locally from the office, and I can browse other subnets from them (ie. at home, etc), but when I get on another subnet and try

Not an really good subject, I know but that''s kind of what happend. I''m trying to build an backup-solution server, Windows users using OSCAR (which uses rsync) to sync their files to an folder and when complete takes a snapshot. It has worked before but then I turned on the -R switch to rsync and when I then removed the folder with rm -rf it crashed. I didn''t save what

Hi All, I''ve got a DomU that sometimes goes mad. I can''t ssh or usually even console to it. The time I did manage to console I got a load of dumps about being out of memory and swap, but couldn''t run any commands to find out which process had gone mad :( From Dom0 I can see the DomU at 100% CPU and can only stop it with a destroy. What can I do/check to find

Running an mmap-intensive workload on ZFS on a X4500, Solaris 10 11/06 (update 3). All file IO is mmap(file), read memory segment, unmap, close. Tweaked the arc size down via mdb to 1GB. I used that value because c_min was also 1GB, and I was not sure if c_max could be larger than c_min....Anyway, I set c_max to 1GB. After a workload run....: > arc::print -tad { . . . ffffffffc02e29e8

Hello list, I''m having trouble with a server holding a lot of data. After a few months of uptime, it is currently rebooting from a lockup (reason unknown so far) but it is taking hours to boot up again. The boot process is stuck at the stage where it says: mounting zfs filesystems (1/5) the machine responds to pings and keystrokes. I can see disk activity; the disk leds blink one after