search for: memstat

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...

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 se...

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 t...

...is not much load on this system. Memory seems to be not an issue (see below). I looked at the old Nevada code base of onnv_147 and can''t find a reason for this happening. How can I find out what''s causing this? BTW: I was not seeing this on SolEx 11/10. Thanks, Peter *** ::memstat *** Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 860254 3360 21% ZFS File Data 3047 11 0% Anon 38246 149 1% Exec...

...s test I observe for backend on average I/O is 132 MB/s for READs and 51 MB/s WRITES Q: Why is more read than wtritten? Test 2: Random writes @ 4k to 10''000 1MB files (10''000 threads, 1 per file). - ARC size now goes to 1 GB during the entire test (way above the hard limit) - ::memstat reports that zfs grew from the original 430 MB to about 1.5 GB Q: Does mdb memstat reporting include ARC? Q: On the backend I see 170 MB/s reads and 0.5 MB.s writes -- What is happening here? SOME sample output ... ----------- > ::memstat Page Summary Pages MB...

...rvers, 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 nfs ] ::memstat Page Summary Pages MB %Tot ---- Kernel 4108442 16048 49% Anon 3769634 14725 45% Exec and libs 9098 35 0% Page cache 29612 115 0% Free (cachelist) 99437 388 1% Free (freelist) 369040 1441 4% Total 8385263 32754 Physical 8176401 31939 Out of 32GB of RAM, 16GB is being used by the kernel. Is there a...

...3.40s sys 0m11.43s The disk are of course very busy during the first runs on both machines, but on the slow machine it has to do all the work again while the disk in the fast machine gets to rest on the second run. Slow system (OSOL b124, T61 Intel c2d laptop root pool on 2.5" disk): memstat pre first run: Kernel 162685 635 16% ZFS File Data 81284 317 8% Anon 57323 223 6% Exec and libs 3248 12 0% Page cache 14924 58...

...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 it separate? I see on the backed only reads (205 MB/s) and almost no writes (1.1 MB/s) - any ides what is being read? --- BEFORE TEST # ~/bin/arc_summary.pl System Memory: Physical RAM: 12270 MB Free Memory : 7108 MB...

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 pe...

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 cach...

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

...4 0 (unused) ip_masq_ftp 2424 0 (unused) nfsd 146188 4 (autoclean) tulip 30680 1 (autoclean) ne2k-pci 4232 1 (autoclean) 8390 6228 0 (autoclean) [ne2k-pci] serial 42612 0 (autoclean) memstat 1476 0 (unused) stellar:~ # uname -a Linux stellar 2.2.14 #1 Fri May 5 17:43:12 GMT 2000 i586 unknown Wellllll anyway, I guess that's it. If any of you see some kind of error, or if you know how I can make subnet browsing work on that server over the VPN, please let me know...

...(read on <unknown> off 0: zio dbbf8880 [L1 ZFS plain file] 4000L/400P DVA[0]=<0:6aa000:800> DVA[1]=<0:b80a7000:800> fletcher4 lzjb LE contiguous birth=12316 fill=2 cksum=601eba85e8: dump content: kernel pages only > ::spa ADDR STATE NAME da9f5ac0 ACTIVE backup > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 41647 162 32% Anon 56673 221 44% Exec and libs 11331 44 9% Page cach...

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