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-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