search for: zstd

Many distros and browsers these days use zstd as the preferred compression method. For example if you unpack a .deb or .rpm file on Debian or Fedora there is zstd archive inside. It is claimed that zstd offers improved compression over gzip, but (unlike lzma) it has comparable decompression speed. Maybe it is interesting to get an estimate of...

With the changes to add zstd support yesterday, the build of R-devel is failing when zstd is not present, even though the docs say that zstd is optional. The error comes in building the datasets package, see e.g. https://github.com/r-devel/r-svn/actions/runs/12760693086/job/35566530112. Best wishes, Heather On Mon, Jan 13,...

I think the first step would have to be to add zstd support to R. zstd is a bit controversial (as shown by the community blowback of the changes you mentioned) and their build system (calling it that is being very generous) is mess so it would require a bit of testing, but it is doable. That said, assuming the above is solved, we have been debating...

zstd is accessible within R using the archive package [1]. I use it all the time when saving large objects, using code I adapted from [2]. Is your suggestion to import the libraries/source code into base? [1] https://CRAN.R-project.org/package=archive [2] https://coolbutuseless.github.io/2018/10/02/usi...

ok, I did install zstd (zstd command line interface 64-bits v1.4.4, by Yann Collet) reconfigured & compiled dovecot 2.3.10.1 again with option : with-zstd changed the configuration file to : zlib_save = zstd and restarted dovecot - now I have following log file errors : Aug 28 16:17:39 lxc-imap dovecot: imap...

On 2020-09-07 11:21:13 [+1000], Darren Tucker wrote: > The zstd part would be a larger discussion because we would need to > either carry it as a Portable patch or have zstd added to OpenBSD > base, and I don't know if that would be accepted. Do you have any > performance numbers for zstd in this application? A key stroke is here 10 bytes of raw...

Can't speak for Jeroen, but it sounds like it's worth adding support for tar.zstd package files, just like how tar.gz, tar.xz, and tar.bzip2 are currently supported. I'd also argue for support zstd compression throughout R, including adding zstdfile(), support for saveRDS(..., compress = "zstd"), and so on. Then it could be discussed later what the default(s) shoul...

https://bugzilla.samba.org/show_bug.cgi?id=14338 Bug ID: 14338 Summary: ZSTD support Product: rsync Version: 3.1.3 Hardware: All OS: All Status: NEW Severity: normal Priority: P5 Component: core Assignee: wayne at opencoder.net Reporter: Rsync at ml.breakpoint.cc...

From: Sebastian Andrzej Siewior <sebastian at breakpoint.cc> zstd compression was announced as "good compression with high throughput" so I gave it a try. With zlib, on high speed links the CPU is usually the bottle neck. With zstd I'm able to fill a 200Mbit link :) zstd detection happens automatically via pkg-config. No zstd header means no error...

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 Reporter: fab...

zstd support was added in v2.3.11 (not v2.3.12 like I mistakenly tried to say in the earlier mail). > On 28. Aug 2020, at 16.36, Robert Nowotny <rnowotny at rotek.at> wrote: > > > ok, I did install zstd (zstd command line interface 64-bits v1.4.4, by Yann Collet) > > reconfig...

On 8. Sep 2020, at 12.35, Robert Nowotny <rnowotny1966 at gmail.com> wrote: Dear Aki, I switched to "gz" now, since "zstd" also gave some errors on writing to files. What kind of errors? Probably this? : Panic: file ostream.c: line 287 (o_stream_sendv_int): assertion failed: (!stream->blocking) can be - unfortunately I do not have the log files anymore... Sep 3 08:33:25 lxc-imap dovecot: imap(mpaul)&lt...

...mpaul)<48684><2/9E5mKuAezAqKjk>: Error: Mailbox Sent: UID=2171: read(zlib(/home/vmail/virtualmailboxes/mpaul/storage/m.119)) failed: read(/home/vmail/virtualmailboxes/mpaul/storage/m.119) failed: Broken pipe (FETCH BODY[]) Also this way you can see if the broken mail is actually xz or zstd or zlib. It would be nice to know if there are any zstd or zlib compressed mails that have problems. We did a lot of stress testing with zstd and also with xz, but haven't been able to reproduce any problems. It's also strange that it says taht the error is "Broken pipe" - that do...

I added ZSTD support to OpenSSH roughly three years ago and I've been playing with it ever since. The nice part is that ZSTD achieves reasonable compression (like zlib) but consumes little CPU so it is unlikely that compression becomes the bottle neck of a transfer. The compression overhead (CPU) is negligi...

I added ZSTD support to OpenSSH roughly over a year and I've been playing with it ever since. The nice part is that ZSTD achieves reasonable compression (like zlib) but consumes little CPU so it is unlikely that compression becomes the bottle neck of a transfer. The compression overhead (CPU) is negligible...

...9E5mKuAezAqKjk>: Error: Mailbox Sent: UID=2171: read(zlib(/home/vmail/virtualmailboxes/mpaul/storage/m.119)) failed: read(/home/vmail/virtualmailboxes/mpaul/storage/m.119) failed: Broken pipe (FETCH BODY[]) >>> >>> Also this way you can see if the broken mail is actually xz or zstd or zlib. It would be nice to know if there are any zstd or zlib compressed mails that have problems. We did a lot of stress testing with zstd and also with xz, but haven't been able to reproduce any problems. It's also strange that it says taht the error is "Broken pipe" - that do...

From: Sebastian Andrzej Siewior <sebastian at breakpoint.cc> The "zstd at breakpoint.cc" compression algorithm enables ZSTD based compression as defined in RFC8478. The compression is delayed until the server sends the SSH_MSG_USERAUTH_SUCCESS which is the same time as with the "zlib at openssh.com" method. Signed-off-by: Sebastian Andrzej Siewior <...

> > On 8. Sep 2020, at 12.35, Robert Nowotny <rnowotny1966 at gmail.com <mailto:rnowotny1966 at gmail.com>> wrote: >> >> >> Dear Aki, >> I switched to "gz" now, since "zstd" also gave some errors on writing to files. > > What kind of errors? Probably this? : Panic: file ostream.c: line 287 (o_stream_sendv_int): assertion failed: (!stream->blocking) >> Sep 3 08:33:25 lxc-imap dovecot: imap(mpaul)<48684><2/9E5mKuAezAqKjk>: Error: Mai...

I hacked zstd support into OpenSSH a while ago and just started to clean it up in the recent days. The cleanup includes configuration support among other things that I did not have. During testing I noticed the following differences compared to zlib: - highly interactive shell output (as in refreshed at a _very...

...tin Rushton via CentOS wrote: > You'll need to upgrade to CentOS8. > > C7 is at rsync 3.1.2-10, and will not go above 3.1.2 ever. > > C8.2 is at 3.1.3-7, C8 will always be on 3.1.3 > > Martin Another option is to build rsync from source, which is what I did to try out the zstd compression. centos7$ rsync --version rsync? version 3.2.2? protocol version 31 Copyright (C) 1996-2020 by Andrew Tridgell, Wayne Davison, and others. Web site: https://rsync.samba.org/ Capabilities: ??? 64-bit files, 64-bit inums, 64-bit timestamps, 64-bit long ints, ??? socketpairs, hardlinks,...