724a14a256
Update to rc4 of v2.9.0. Also includes a few other fixes, and a number of tweaks to the spec files. I'd be happy to answer any questions about all those spec file changes, I believe they were all in the direction of a more correct and maintainable spec file. Since this is still in rc phase, let's keep it in devel project. Final release should appear in time for Beta2 of SLE12SP3. Delta from previous: Added Alex's patch for keyboard empty event. OBS-URL: https://build.opensuse.org/request/show/487699 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=334
41 lines
1.3 KiB
Diff
41 lines
1.3 KiB
Diff
From a511e713d55d924531525a332170c10c12a53ec8 Mon Sep 17 00:00:00 2001
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From: Alexander Graf <agraf@suse.de>
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Date: Wed, 14 Jan 2015 01:32:11 +0100
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Subject: [PATCH] AIO: Reduce number of threads for 32bit hosts
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On hosts with limited virtual address space (32bit pointers), we can very
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easily run out of virtual memory with big thread pools.
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Instead, we should limit ourselves to small pools to keep memory footprint
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low on those systems.
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This patch fixes random VM stalls like
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(process:25114): GLib-ERROR **: gmem.c:103: failed to allocate 1048576 bytes
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on 32bit ARM systems for me.
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Signed-off-by: Alexander Graf <agraf@suse.de>
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---
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util/thread-pool.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/util/thread-pool.c b/util/thread-pool.c
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index 610646d131..2e34e9846d 100644
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--- a/util/thread-pool.c
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+++ b/util/thread-pool.c
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@@ -308,7 +308,12 @@ static void thread_pool_init_one(ThreadPool *pool, AioContext *ctx)
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qemu_mutex_init(&pool->lock);
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qemu_cond_init(&pool->worker_stopped);
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qemu_sem_init(&pool->sem, 0);
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- pool->max_threads = 64;
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+ if (sizeof(pool) == 4) {
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+ /* 32bit systems run out of virtual memory quickly */
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+ pool->max_threads = 4;
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+ } else {
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+ pool->max_threads = 64;
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+ }
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pool->new_thread_bh = aio_bh_new(ctx, spawn_thread_bh_fn, pool);
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QLIST_INIT(&pool->head);
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