memory

  1. I

    bhyve bhyve memory leak

    I notice that there is substantial memory leak after using and shutting down a bhyve VM (in particular, I'm testing with OpenBSD guests). Starting from a freshly booted FreeBSD host (v.13), the Wired memory is about 500 MB, and after running the VM and ... - irregardless of setting the VM to...
  2. I

    Can't boot up a machine with replaced memory cards

    I bought and replaced some new memory cards (PC4-25600) for a notebook PC (NEC, purchased in Japan) already running FreeBSD. The RAM cards fitted perfected into the slots. However, upon turning on, FreeBSD does not boot up and the screen is blank. I don't think it is even getting through the...
  3. F

    Solved Core dumps on my /home/username/ !??!?

    Ok so FreeBSD secures memory and makes unreadable to non-root users. But by default FreeBSD comes with "ulimit = unlimited" and I think that can cause to make normal users be able to read other apps memories. No code execution maybe but core dumps can include special informations about...
  4. grahamperrin

    FreeBSD-provided disk images: problems with UFS, fsck_ufs (fsck_ffs(8)); partition sizes …

    Why not ZFS by default? Images are compressed before distribution. I assume that compression is very effective for: non-used space (free, never used) in file systems non-used swap space. Why is there so little free space in the file system for the base OS? Why is so little of the disk given...
  5. tarkhil

    out of swap space

    Apr 11 21:00:41 bipgame kernel: pid 10470 (mysqld), jid 2, uid 88, was killed: out of swap space Apr 11 21:00:46 bipgame kernel: pid 31041 (bhyve), jid 0, uid 0, was killed: out of swap space Apr 11 21:00:46 bipgame kernel: pid 42311 (node), jid 7, uid 0, was killed: out of swap space Apr 11...
  6. J

    contigmalloc and contigfree issue

    Hi, I am currently developing a driver, which uses quite large (2M+) contiguous memory chunks allocations via contigmalloc. I have noticed that contigmalloc as well as contigfree take a lot of time when dealing with large memory chunks and also a rather significant difference in number of...
  7. A

    C/C++ llvm10 memory sanitizer error at std::ostream::operator<<

    Hello! I created this simple source file: #include <iostream> int main(){ std::cout << "TEST" << std::endl; return 0; } Compiled this file with devel/llvm10: clang++10 -fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -Wall -Wextra -pedantic -g -I/usr/include...
  8. H

    ZFS ZFS settings/tuning for 16GB RAM

    Hi, I'm using FreeBSD 11.2-RELEASE-p4 as Desktop OS on my Lenovo X230 with 16GB RAM and ZFS as file system. This is my first FreeBSD install. So far, I haven't had any issues with ZFS, but I have some slightly concerning boot messages and was wondering if I should change any ZFS-related...
  9. goshanecr

    What information need to collect for a freeze diagnosting?

    Good day! I have a periodical freeze with one of FreeBSD instance. Logs have not any messages, and I want start collecting system info every 5 seconds for example and write it to log files, for diagnosting after freeze. That PC has a VirtualBox instance, ZFS on GELI based providers and samba...
  10. aragats

    Solved certain mono functions don't work?

    Are there mono users here? I noticed that some functions do not work properly unless I'm missing something. For example, Process.WorkingSet64 is supposed to return the amount of physical memory allocated for a process, however, it returns 0 in FreeBSD and the actual memory in Linux (the same...
  11. S

    How to access physical memory

    Hi I'm the new here . And I have some questions with pmap. See `*pml4` is the physical address of a page with some flag. And then updated the address to the Direct Map Space. Then We calculate the offset of the real pdp we need . How could it access to `*pdp`? it is a virtual addr in Direct...
  12. S

    Recommended RAM for L2Arc !!

    Hi, We're using FreeBSD server for video streaming site serving 200-4096MB size of each video. Server is built around 12 x 3TB SATA HDDs on HBA RAID-10 with 64GB DDR3 RAM. Recently we decided to add SSD as L2ARC device to cache video files and wanted to gather recommendations regarding how...
  13. DiscmanDaemon

    Solved Laundry Memory, Jails, and Thrashing

    Good Morning All, I have been experiencing some mysterious thrashes on one of my servers, and I have finally gathered enough data about the problem to possibly ask for help (it was very difficult to get data since once it started thrashing there was nothing to be done except reboot...). The...
  14. IPTRACE

    Memory failure?

    Hello! What do the following erros mean? Jan 3 19:13:15 hpv kernel: MCA: Bank 13, Status 0x8c000051000800c0 Jan 3 19:13:15 hpv kernel: MCA: Global Cap 0x0000000007000c16, Status 0x0000000000000000 Jan 3 19:13:15 hpv kernel: MCA: Vendor "GenuineIntel", ID 0x306f2, APIC ID 48 Jan 3 19:13:15...
  15. S

    High Wired memory usage !!

    Hi, We've 96 GB memory and I can see that 76 GB is wired and there's also total ARC 69 GB already occupied. My question is, if FreeBSD requires additional memory for processes will wired/ARC release the memory for FreeBSD usage to prevent swap usage? Since 12 GB is only free. Will OS start...
  16. aragats

    Wired memory growth

    I observe a significant growth of the wired memory in a small VPS with 512MB RAM. Right after booting top shows 34MB Wired, then after a couple of simple operations like installing a package or deleting a directory with large number of files it jumps to 190MB+:Mem: 18M Active, 34M Inact, 192M...
  17. B

    HP DL 585 / ACPI ID / ECC Memory / Panic

    Hi, I recently added a zfs disk array to my old HP 585 G1 Server. Immediately there was kernel panics and I have spent quite a bit of time figuring out what was really wrong. The system has 4 cpu cards with opteron double core processors. Each card has 4x2 gigabyte memory 4x2x4 = 32 gigabyte...
  18. dch

    Previously stable server reboots during jail usage

    This previously stable (2+ years) server has had 3 unexpected reboots in the last week, each time during jail-related work (creation, deletion, poudriere runs). zpool scrubs are clean, and there is no log or trace of a crash or error prior to any of the reboots. I'm considering a h/w issue but...
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