search for: lz4

Hello, When I look at email files on my server (mdbox format), they contain random LZ4 stuff. I have now changed the compression to gzip and new mails look cleaner. But older ones have problems. A mail file looks like this: 2 M1e C5655b6a8 ^A^BN 00000000000006F4 Dovecot-LZ4^M*<9B><C5>^@^A^@^@^@^@^F<DD><FF><83>Return-path: <nobody at winnie...

Linux 3.11 added respective support, so I think we should follow suit. 1: xen: add LZ4 decompression support 2: libxc: add LZ4 decompression support Signed-off-by: Jan Beulich <jbeulich@suse.com>

On Sun, May 10, 2015 at 08:16:54PM -0400, Darik Horn wrote: > > LZ4 is supposed > > to be a very fast compression algorithm, especially when it comes to > > decompression. I did a quick benchmark with zlib, LZO and LZ4. Now, > > there are many benchmarks you can find online, but most of them deal > > with compressing large files. Tinc on the...

Hello, Darik Horn sent a pull request adding support for LZ4. LZ4 is supposed to be a very fast compression algorithm, especially when it comes to decompression. I did a quick benchmark with zlib, LZO and LZ4. Now, there are many benchmarks you can find online, but most of them deal with compressing large files. Tinc on the other hand has to compress small p...

WARNING: This is not compatible with the previous lz4 patchset. If you''re using experimental compression that isn''t in mainline kernels, be prepared to backup and restore or decompress before upgrading, and have backups in case it eats data (which appears not to be a problem any more, but has been during development). These patches...

I am running XEN on CentOS Linux release 7.8.2003 I have a Debian 7, and two Gentoo DomU Guests running fine. I am trying to get an Ubuntu 20.04 DomU Guest running but I get this error when trying to run the netboot kernel image xc_dom_probe_bzimage_kernel unable to LZ4 decompress kernel I understand that CentOS Xen does not support LZ4 decompression. Is there a workaround for this? Regards Francis -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20201012/ab57b775/...

Hi, so here it is, LZ4 compression method inside btrfs. The patchset is based on top of current Chris'' for-linus + Andi''s snappy implementation + the fixes from Li Zefan. Passes xfstests and stresstests. I haven''t measured performance on wide range of hardware or workloads, rather wanted to pu...

https://bugzilla.mindrot.org/show_bug.cgi?id=2888 Bug ID: 2888 Summary: Consider adding other compression schemes (lz4, zstd) Product: Portable OpenSSH Version: 7.7p1 Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5 Component: Miscellaneous Assignee: unassigned-bugs at mindrot.org Reporte...

On Sun, May 10, 2015 at 7:17 PM, Guus Sliepen <guus at tinc-vpn.org> wrote: > > Darik Horn sent a pull request adding support for LZ4. The PR is: * https://github.com/gsliepen/tinc/pull/78 > LZ4 is supposed > to be a very fast compression algorithm, especially when it comes to > decompression. I did a quick benchmark with zlib, LZO and LZ4. Now, > there are many benchmarks you can find online, but most of them dea...

I'm a long time user of openssh and I was wondering if there is any work towards supporting alternative compression methods in openssh like LZ4? Regards, Mark -- Mark E. Lee <mark at markelee.com> -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 230 bytes Desc: This is a digitally signed message part URL: <http://lists.mindrot.org/pipermail/o...

...ird? > > Thanks, > Andreas > > > Am 31.05.2017 um 00:02 schrieb awl1: >> All, >> >> having successfully compiled and set up Dovecot 2.2.29.1 on my Thecus NAS as a newbie without any further hassle, and already imported an external mail archive of ~15 GB into a lz4-compressed mdbox (with impressive performance on the old Intel Atom CPU!), I stumbled into a minor, but reproducible issue that might well be already known, but I haven't managed to find any pointers through Google search: >> >> When I *manually empty the Trash folder from Thunderbi...

...ff by default). On Thursday, October 24, 2013, Darren Tucker wrote: > On Thu, Oct 24, 2013 at 07:30:38PM -0400, Mark E. Lee wrote: > > I'm a long time user of openssh and I was wondering if there is any work > > towards supporting alternative compression methods in openssh like LZ4? > > not that I've heard of. > > -- > Darren Tucker (dtucker at zip.com.au) > GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69 > Good judgement comes with experience. Unfortunately, the experience > usually comes from bad judgement. > ________...

...ast 150 MB / second of .wav input data on a standard computer : laptop computer, Core i5/i7, Windows 7 64 bit, 8 GB RAM) ? (It's ok to have a compression ratio which is a little bit lower than traditionnal FLAC) I'm looking for something which is between FLAC (very good ratio, slower than LZ4) and LZ4 (very very fast compression : 400 MB / sec, but lower compression ratio than FLAC because it's not dedicated to audio). Best regards. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/flac-dev/attachments/20140316/b783fc...

https://dovecot.org/releases/2.2/rc/dovecot-2.2.32.rc1.tar.gz https://dovecot.org/releases/2.2/rc/dovecot-2.2.32.rc1.tar.gz.sig There are various changes in this release that can be used to significantly reduce disk IO with: 1) NFS storage especially, but I guess also other remote filesystems and even some with local disks 2) When mail storage and INDEX storage are separated * imapc: Info-level

https://dovecot.org/releases/2.2/rc/dovecot-2.2.32.rc1.tar.gz https://dovecot.org/releases/2.2/rc/dovecot-2.2.32.rc1.tar.gz.sig There are various changes in this release that can be used to significantly reduce disk IO with: 1) NFS storage especially, but I guess also other remote filesystems and even some with local disks 2) When mail storage and INDEX storage are separated * imapc: Info-level

...arren Tucker wrote: > On Thu, Oct 24, 2013 at 07:30:38PM -0400, Mark E. Lee wrote: > > I'm a long time user of openssh and I was wondering if there > is any work > > towards supporting alternative compression methods in > openssh like LZ4? > > not that I've heard of. > > -- > Darren Tucker (dtucker at zip.com.au) > GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 > 8FF4 FA69 > Good judgement comes with experience. Unfortunate...

...From: Bob Friesenhahn <bfriesen at simple.dallas.tx.us> Date: Mon, 23 Jul 2012 12:55:44 -0500 (CDT) To: zfs at lists.illumos.org cc: Radio m?odych bandyt?w <radiomlodychbandytow at o2.pl>, Pawel Jakub Dawidek <pjd at FreeBSD.org>, developer at lists.illumos.org Subject: Re: [zfs] LZ4 compression algorithm User-Agent: Alpine 2.01 (GSO 1266 2009-07-14) Reply-To: zfs at lists.illumos.org On Mon, 23 Jul 2012, Sa?o Kiselkov wrote: > > Anyway, the mere caring for clang by ZFS users doesn''t necessarily mean > that clang is unusable. It just may not be usable for ker...

...fast-gpu --no-md5: 805893523 bytes - 10.687 seconds > FLAC -0: 838208659 bytes - 27.170 seconds //no idea how to remove the MD5 > checksum from the encode. The MD5 function is not SSE-accelerated and is > pretty slow. > > One other variant is to use a general purpose compressor(maybe LZ4 or even > Zhuff) and apply a filter to get the size down. I tried this and got > miserable results, mainly because the filter that i used was slow. You may > want to post on http://encode.ru if you wish to take this path. The site > is not in Russian despite the last two letters. > &...

I see. From reading that wikipedia article, I'm wondering what gets compressed when compression is enabled in openssh. Is it the ciphertext or the cleartext? Regards, Mark On Fri, 2013-10-25 at 15:47 -0400, Daniel Kahn Gillmor wrote: > On 10/25/2013 03:23 PM, Mark E. Lee wrote: > > Thanks for the response, what kind of problematic interactions would > > occur (other than

Also nice to know that zlib at openssh.com enables the compression only after authentication, mitigating the known problems with compression and passwords. It is also very hard to do chosen-plaintext attacks on the client to server side (in opposite to HTTPS where that's trivial). And most passwords that are typed after authentications are entered character by character, making them fall under