#Error xz compression not available how to#
$ tar -cvf - file1 file2 dir3 | gzip > How to use bzip2 compression instead of gzip compression If your system does not use GNU tar (for example, older Unix-like systems), you can still create a compressed tar file, via the following syntax: The above syntax use GNU tar command for compressing and uncompressing tar files. $ tar -zcvf /path/to/dir1/ /path/to/dir2/ A note about non gnu/tar command You can compress multiple directories too: To compress directory named /home/vivek/bin/ in to a /tmp/ type the tar command on Linux: $ ls - Compress an entire directory to a single file If you wish to extract files in particular directory, for example in /tmp then you need to use the following command: If you wish to restore your archive then you need to use the following command (it will extract all files in current directory): $ tar -zcvf /home/jerry/progĪbove command will create an archive file called in current directory. -v : Verbose i.e display progress while creating archiveįor example, say you have a directory called /home/jerry/prog and you would like to compress this directory then you can type tar command as follows:.-z : Compress archive using gzip program in Linux or Unix.You need to use the tar command as follows (syntax of tar command): How to compress a whole directory in Linux or Unix Additional operations includes listing, deleting or updating the archive files.
I used rpmbuild 4.14.2 so I was not get any benefit from the commits, however, it would be good to try this as well. It enables thread autodetection for automated parallel compression (xz and zstd compression type only). In August 2020, a pull request has been merged to the rpmbuild main branch. I accelerated RPM packaging by using multithreaded compression using rpmbuild feature. It is a huge improvement and I think it can be improved further! 4. Note, that the elapsed time includes the entire process even includes compile and link time, which takes a lot of portion of the entire build process. Without multithreading compression: 85m 3.681s.The entire rpmbuild time change measured with time command is as follows: Rpmbuild with the overriden _binary_payload uses nearly all 16 cores. $ rpmbuild -define "_binary_payload w2T16.xzdio" -rebuild ceph-16.0.rpm You can check which algorithm is currently set for rpmbuild with rpmbuild -showrc: This becomes a huge bottleneck for Ceph RPM packaging.
rpmbuild only uses one core for packaging step. However, as the final step, rpmbuild builds a package with built binaries and libraries with compression.īy default, rpmbuild uses level 2 XZ compression to build a RPM package, which only uses one core. Therefore, building phase is parallelized, and not a problem. Test "$CEPH_SMP_NCPUS" -le 0 & CEPH_SMP_NCPUS="1" & echo "Warning: Not using parallel build at all because of memory limits"Įxport CEPH_MFLAGS_JOBS="-j$CEPH_SMP_NCPUS" Test "$CEPH_SMP_NCPUS" -gt "$max_jobs" & CEPH_SMP_NCPUS="$max_jobs" & echo "Warning: Reducing build parallelism to -j$max_jobs because of memory limits" If test -n "$CEPH_SMP_NCPUS" -a "$CEPH_SMP_NCPUS" -gt 1 then # 32-bit builds can use 3G memory max, which is not enough even for -j2 Where $CEPH_MFLAGS_JOBS is defined -j$CEPH_SMP_NCPUS, which is carefully set for parallel build, which would not paralyze the entire system: # Parallel build settings. rpmdev-setuptree creates a basic directory structure in your home directory: /home/user/rpmbuild/ \.
0 kommentar(er)
