Re: [gentoo-user] 100% CPU load in qtwebengine
On Friday, 24 May 2024 11:52:55 BST Peter Humphrey wrote: > On Thursday, 23 May 2024 20:13:27 BST Michael wrote: > > On Thursday, 23 May 2024 14:07:16 BST Peter Humphrey wrote: > > > Hello list, > > > > > > On this box I have this: > > > > > > # grep '\-j' /etc/portage/make.conf > > > EMERGE_DEFAULT_OPTS="--jobs --load-average=4 [...] " > > > MAKEOPTS="-j4 -l4" > > > > > > That seems to work well, except for a 20s period at the beginning of > > > emerging qtwebengine, during which CPU load goes to 100%, according to > > > gkrellm. > > > > > > It seems that the ebuild runs a process other than make, ignoring > > > make.conf. Does anyone here know what that might be, and why it > > > disregards my preferences? > > > > Does this happen while the source archive is being decompressed? > > It could be; the .tar.xz file is 288MB - but I didn't think bzip2 was > multithreaded*. I tried to check by rerunning the emerge, but it found a > Gentoo binary and went to fetch that. > > * And app-alternatives/bzip2 has installed bzip2. The archive is compressed with xz, which in later versions can run in a multithreaded fashion. I don't know if emerge calls upon it to operate with multiple threads (e.g. xz --threads 0 foo.xz). PS. The bzip2 is single threaded and a slow compressor to boot, but pbzip2 is multithreaded. signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] 100% CPU load in qtwebengine
On Thursday, 23 May 2024 20:13:27 BST Michael wrote: > On Thursday, 23 May 2024 14:07:16 BST Peter Humphrey wrote: > > Hello list, > > > > On this box I have this: > > > > # grep '\-j' /etc/portage/make.conf > > EMERGE_DEFAULT_OPTS="--jobs --load-average=4 [...] " > > MAKEOPTS="-j4 -l4" > > > > That seems to work well, except for a 20s period at the beginning of > > emerging qtwebengine, during which CPU load goes to 100%, according to > > gkrellm. > > > > It seems that the ebuild runs a process other than make, ignoring > > make.conf. Does anyone here know what that might be, and why it > > disregards my preferences? > > Does this happen while the source archive is being decompressed? It could be; the .tar.xz file is 288MB - but I didn't think bzip2 was multithreaded*. I tried to check by rerunning the emerge, but it found a Gentoo binary and went to fetch that. * And app-alternatives/bzip2 has installed bzip2. -- Regards, Peter. signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] 100% CPU load in qtwebengine
On Thursday, 23 May 2024 14:07:16 BST Peter Humphrey wrote: > Hello list, > > On this box I have this: > > # grep '\-j' /etc/portage/make.conf > EMERGE_DEFAULT_OPTS="--jobs --load-average=4 [...] " > MAKEOPTS="-j4 -l4" > > That seems to work well, except for a 20s period at the beginning of > emerging qtwebengine, during which CPU load goes to 100%, according to > gkrellm. > > It seems that the ebuild runs a process other than make, ignoring make.conf. > Does anyone here know what that might be, and why it disregards my > preferences? Does this happen while the source archive is being decompressed? You can check in top (press 'c' then 'Shift+v') to see what command/child process is eating up CPU time. Use Page Up/Down to navigate through the long list. signature.asc Description: This is a digitally signed message part.
