Date: Wed, 11 Sep 2019 22:54:48 +0000 From: bugzilla-noreply@freebsd.org To: gnome@FreeBSD.org Subject: maintainer-feedback requested: [Bug 240517] [PATCH] devel/glib20: syscall flood on every time*() function call Message-ID: <bug-240517-6497-oWcp7yy8bj@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-240517-6497@https.bugs.freebsd.org/bugzilla/> References: <bug-240517-6497@https.bugs.freebsd.org/bugzilla/>
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Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-gnome mailing = list <gnome@FreeBSD.org> for maintainer-feedback: Bug 240517: [PATCH] devel/glib20: syscall flood on every time*() function c= all https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240517 --- Description --- truss show that GTK app do many times: ... 27100: openat(AT_FDCWD,"/etc/localtime",O_RDONLY,00) =3D 114 (0x72) 27100: fstat(114,{ mode=3D-r--r--r-- ,inode=3D1845941,size=3D1518,blksize= =3D32768 }) =3D 0 (0x0) 27100: mmap(0x0,1518,PROT_READ,MAP_PRIVATE,114,0x0) =3D 34458873856 (0x805e= 8b000) 27100: close(114) =3D 0 (0x0) 27100: munmap(0x805e8b000,1518) =3D 0 (0x0) ... I found article: https://blog.packagecloud.io/eng/2017/02/21/set-environment-variable-save-t= hous ands-of-system-calls/ and try to set: env TZ=3D":/etc/localtime" truss -fD geany or env TZ=3D"Europe/Moscow" truss -fD geany without success. I discovered that glib time zone cache is does not work properly: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D GDateTime * g_date_time_new_from_unix_local (gint64 t) { GDateTime *datetime; GTimeZone *local; local =3D g_time_zone_new_local (); datetime =3D g_date_time_new_from_unix (local, t); g_time_zone_unref (local); return datetime; } GTimeZone * g_time_zone_new_local (void) { return g_time_zone_new (getenv ("TZ")); } =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D g_time_zone_new() load and add time zone to cache if arg is not NULL. g_time_zone_unref() - remove time zone from cache. As you can see time zone in most cases removed from cache after short time. Patch add_ref() for time zone "getenv ("TZ")" and "UTC", all other calls g_time_zone_new() leave without changes. After apply patch and set TZ=3D":/etc/localtime" / TZ=3D"Europe/Moscow" no = more syscall flood happen.
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