similar to: Btrfs and more compression algorithms

> -----Original Message----- > From: Matt [mailto:jackdachef@gmail.com] > Sent: Tuesday, February 15, 2011 5:12 PM > To: Minchan Kim > Cc: Dan Magenheimer; gregkh@suse.de; Chris Mason; linux- > kernel@vger.kernel.org; linux-mm@kvack.org; ngupta@vflare.org; linux- > btrfs@vger.kernel.org; Josef Bacik; Dan Rosenberg; Yan Zheng; > miaox@cn.fujitsu.com; Li Zefan > Subject:

https://bugzilla.samba.org/show_bug.cgi?id=6603 Summary: Improve --skip-compress default values Product: rsync Version: 3.0.6 Platform: Other OS/Version: Windows XP Status: NEW Severity: normal Priority: P3 Component: core AssignedTo: wayned at samba.org ReportedBy: jari.aalto at cante.net

when syncing Mailboxes with IMAPSYNC, using xz compression the dbox file gets corrupted. the same configuration was working ok on low load with xz compression. Dovecot Version 2.2.12 Linux Mint 16 EXT4 Filesystem another dovecot user already reported the same problem on the mailinglist, using dsync. That user switched to bz2 compression what worked for him. the answer was : > are you on

when syncing Mailboxes with IMAPSYNC, using xz compression the dbox file gets corrupted. the same configuration was working ok on low load with xz compression. Dovecot Version 2.2.12 Linux Mint 16 EXT4 Filesystem another dovecot user already reported the same problem on the mailinglist, using dsync. That user switched to bz2 compression what worked for him. the answer was : > are you on

Hello, I habe the problems described in here https://btrfs.wiki.kernel.org/index.php/Gotchas: Files with a lot of random writes can become heavily fragmented (10000+ extents) causing trashing on HDDs and excessive multi-second spikes of CPU load on systems with an SSD or large amount a RAM. On servers and workstations this affects databases and virtual machine images. The nodatacow mount option

Hi, I compile a .cpp with cmd: clang++ -emit-llvm -c -g -O0 -w pbzip2.cpp -o pbzip2.bc -lbz2 llvm-dis pbzip2.bc One function in .cpp is consumer_decompress. However, I look inside pbzip2.ll. The function name is changed to "define i8* @_Z19consumer_decompressPv(i8* %q) #0 {" Why clang adds a "_Z19" prefix and "Pv" suffix? Thanks,

While migrating users from Cyrus IMAP v2.3.14 to Dovecot 2.2.12 (compiled from source) dsync aborts with a backtrace on some (maybe 15 out of 800) mail accounts: (same error happens wiht or without -f flag) dsync -D -v -o mail_fsync=never mirror -f -R -u user at domain imapc: <snip> dsync(user at domain.com): Debug: brain M: in state=sync_mails dsync(user at domain.com): Debug: brain M:

i have enabled the zlib plugin with xz compression but on some new mails i got now a segfault and the following lines in dovecot error.log Dec 12 08:51:23 imap(tester at domain.com): Error: lzma.read(/srv/vmail/mail/domain.com/root/storage/m.3): unexpected EOF at 136004 Dec 12 08:51:23 imap(tester at domain.com): Error: read(zlib(/srv/vmail/mail/domain.com/root/storage/m.3)) failed:

Got it, thanks. But in my pass, I use function name to locate. Can I disable mangling in clang? Best, Haopeng On 3/1/15 10:44 PM, John Criswell wrote: > On 3/1/15 11:38 PM, Haopeng Liu wrote: >> Hi, >> >> I compile a .cpp with cmd: >> clang++ -emit-llvm -c -g -O0 -w pbzip2.cpp -o pbzip2.bc -lbz2 >> llvm-dis pbzip2.bc >> >> One function in .cpp is

In addition to the major points that others made: if you care about speed, don't use compression. With today's fast disks it's an order of magnitude slower to use compression: > d=lapply(1:10, function(x) as.integer(rnorm(1e7))) > system.time(saveRDS(d, file="test.rds.gz")) user system elapsed 17.210 0.148 17.397 > system.time(saveRDS(d,

Source: xen Version: 4.2.1-2 Severity: serious Tags: jessie sid User: debian-qa at lists.debian.org Usertags: qa-ftbfs-20130609 qa-ftbfs Justification: FTBFS on amd64 Hi, During a rebuild of all packages in sid, your package failed to build on amd64. Relevant part: > make[2]: Entering directory `/?PKGBUILDDIR?' > mkdir -p debian/build/build-utils_amd64 > cp -al CODING_STYLE COPYING

Hi, I am dealing with very large datasets and it takes a long time to save a workspace image. The options to save compressed data are: "gzip", "bzip2" or "xz", the default being gzip. I wonder if it's possible to include the pbzip2 (http://compression.ca/pbzip2/) algorithm as an option when saving. "PBZIP2 is a parallel implementation of the bzip2

Hi! I scanned for relevant topics in the last two years but except for putting a swap file on compress=lzo this march I didn´t found anything. Does compression make sense on SSD? Or more specifically: 1) In what chunk sizes does BTRFS compress? How much data is affected when a byte is changed in a 2 GB file or so? Can compression cause more writes to the SSD in extreme circumstances? 2) It

Hi, I planned to boost my btrfs performance today. here some errors I met: my ''btrfs filesystem show'' result: ~ # btrfs filesystem show failed to read /dev/sr0 Label: none uuid: 9b9aa9d9-760e-445c-a0ab-68e102d9f02e Total devices 1 FS bytes used 36.59GB devid 1 size 49.52GB used 49.52GB path /dev/sda6 Label: none uuid: 559dec06-4fd0-47c1-97b8-cc4fa6153fa0

Don't archive as lzma if you don't want lzma, remove the "--format=lzma" parameter. hth Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "Mircea Husz" <mirceahusz at yahoo.com> > To: "CentOS mailing list" <centos at centos.org> > Sent: Wednesday, 31 January, 2018

Hi guys! Unfortunately there is no offtopic list but the subject is somehow related to centos as the OS is/will be centos :) So, under this thin cover i ask : Is it possible that for a SAS controler like LSI 3008 that in specs says that : "This high-performance I/O controller supports T-10 data protection model and optical support, PCIe hot plugging, and up to 1,000 connected devices"

In support of the recently added capability to remount with lzo compression, provide a helper function to check the compression INCOMPAT flags when remounting with lzo compression, and set the flags if necessary. Also, implement the new helper function when defragmenting with explicit lzo compression and when setting the default subvolume. Signed-off-by: Mitch Harder

In my experience the mass market HBAs and RAID cards typically do support only 8 or 16 drives. For the internal variety in a standard rack-mount server you'll usually see either 2 or 4 iPass cables (each of which support 4 drives) connected to the backplane. The marketing material you've referenced has a white lie in it: supporting more than 16 drives on a single card is very likely only

hpa, will there be support for lzma and bzip compressed kernels, initrds and images in one of the following releases of syslinux? I saw that you want lzma and bzip2 compression included in the kernel: http://groups.google.com/group/linux.kernel/browse_thread/thread/f415aa765c09c9f7/dae008992e14840f?lnk=raot&pli=1 Gert Hulselmans

I'll try the trunk, as well as check my code again. If indeed it's not fixed, I'll try to post a triggering case here. Thanks for the advice~ Best, --Wenbin ----- Original Message ----- From: "Tobias Grosser" <grosser at fim.uni-passau.de> To: "Wenbin Zhang" <zhangwen at cse.ohio-state.edu> Cc: <llvmdev at cs.uiuc.edu> Sent: Thursday, August