Bug#781287: systemd: dirty pages are no longer flushed

[Michael Biebl]

Systemd does not fiddle with those settings. It's more likely a tool like laptop-mode-tools or pm-utils. I suggest looking in that direction. 

Am 26. März 2015 23:26:19 MEZ, schrieb Simon Richter <sjr at debian.org>:
>Package: systemd
>Version: 215-12
>Severity: normal
>
>Hi,
>
>suspecting systemd, as it worked before installing systemd, and that
>sounds
>like a typical power management thing:
>
>After installing systemd, often dirty pages stop being flushed out and
>remain dirty for minutes, then the first read access to a sector that
>is
>not cached then writes out all buffers synchronously.
>
>While that is somewhat sensible for a laptop with a harddisk on battery
>power, I find it quite annoying as I have an SSD and enough memory for
>it
>to collect a few hundred MB of unwritten data.
>
>File system is ext4 with trim option set.
>
>   Simon
>
>-- Package-specific info:
>
>-- System Information:
>Debian Release: 8.0
>  APT prefers testing
>  APT policy: (990, 'testing'), (500, 'stable')
>Architecture: amd64 (x86_64)
>Foreign Architectures: i386
>
>Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
>Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
>Shell: /bin/sh linked to /bin/dash
>Init: systemd (via /run/systemd/system)
>
>Versions of packages systemd depends on:
>ii  acl             2.2.52-2
>ii  adduser         3.113+nmu3
>ii  initscripts     2.88dsf-58
>ii  libacl1         2.2.52-2
>ii  libaudit1       1:2.4-1+b1
>ii  libblkid1       2.25.2-5
>ii  libc6           2.19-15
>ii  libcap2         1:2.24-7
>ii  libcap2-bin     1:2.24-7
>ii  libcryptsetup4  2:1.6.6-5
>ii  libgcrypt20     1.6.2-4+b1
>ii  libkmod2        18-3
>ii  liblzma5        5.1.1alpha+20120614-2+b3
>ii  libpam0g        1.1.8-3.1
>ii  libselinux1     2.3-2
>ii  libsystemd0     215-12
>ii  mount           2.25.2-5
>ii  sysv-rc         2.88dsf-58
>ii  udev            215-12
>ii  util-linux      2.25.2-5
>
>Versions of packages systemd recommends:
>ii  dbus            1.8.16-1
>ii  libpam-systemd  215-12
>
>Versions of packages systemd suggests:
>pn  systemd-ui  <none>
>
>-- Configuration Files:
>/etc/systemd/logind.conf changed:
>[Login]
>HandleLidSwitch=ignore
>
>
>-- no debconf information

-- 
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