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authorThomas Schwinge <thomas@schwinge.name>2011-11-04 19:22:41 +0100
committerThomas Schwinge <thomas@schwinge.name>2011-11-04 19:22:41 +0100
commite8ab9711504055c81d164aa35e0629c2c81f1082 (patch)
tree68d4b846188ad3a90cf7f732c849f85c5b3e8640 /open_issues/performance
parent5d44547d701fe96aef425c6e3f719df9a34581e8 (diff)
parentbe49aa7ddec52e121d562e14d4d93fd301b05fbb (diff)
Merge remote-tracking branch 'fp/master'
Diffstat (limited to 'open_issues/performance')
-rw-r--r--open_issues/performance/io_system/binutils_ld_64ksec.mdwn4
1 files changed, 4 insertions, 0 deletions
diff --git a/open_issues/performance/io_system/binutils_ld_64ksec.mdwn b/open_issues/performance/io_system/binutils_ld_64ksec.mdwn
index 359d5fee..37fe9c53 100644
--- a/open_issues/performance/io_system/binutils_ld_64ksec.mdwn
+++ b/open_issues/performance/io_system/binutils_ld_64ksec.mdwn
@@ -27,6 +27,10 @@ extracted from cdf7c161ebd4a934c9e705d33f5247fd52975612 sources, 2010-10-24.
On the idle grubber, this one repeatedly takes a few minutes wall time to
complete successfully, contrary to a few seconds on a GNU/Linux system.
+> On order of slowness may in fact be due to a Xen-specific issue, see
+> [[xen_lseek]]. (But there are probably still one or two orders left, even
+> without Xen.)
+
While processing the object files, there is heavy interaction with the relevant
[[hurd/translator/ext2fs]] process. Running [[hurd/debugging/rpctrace]] on
the testee shows that (primarily) an ever-repeating series of `io_seek` and